Vol 157
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Date submitted2003-07-23
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Date accepted2003-08-12
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Date published2004-02-01
Faculty of Mining and Electrical Engineering of St. Petersburg Mining Institute
The article describes the history of the formation and development of the Faculty of Mining and Electrical Engineering at the St. Petersburg State Mining Institute. Its current state is described. Information about leading scientists, founders of the faculty is presented.
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Date submitted2003-07-01
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Date accepted2003-08-09
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Date published2004-02-01
Influence of external factors on the investment activity of a gas company
- Authors:
- Yu. R. Vyakhirev
An analysis of the economic situation in the mineral resource complex of the country as a whole and the gas industry in particular is given. The Russian economy is openly exporting raw materials and to a large extent imports goods of the manufacturing industry. In the gas complex of the country, which is a part of the national fuel and energy complex, as Russia ssia enters the globalization processes, both new threats to its stable development and new opportunities for economic growth arise. The country needs to form a unified state policy in the field of mineral development, which should be based on global principles and take into account the peculiarities of the Russian economy. We propose measures of state regulation in the mining industry, capable of stimulating investment activity of the gas industry.
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Date submitted2003-07-24
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Date accepted2003-08-09
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Date published2004-02-01
Adjusting the pressure of smooth drive wheels on the rail
- Authors:
- V. S. Bersenev
The schemes of mechanisms allowing automatic regulation of pressure of smooth drive wheels on the rail depending on the train resistance value and traction force created by these wheels are considered. The torque acting on the drive wheels ensures the realization of a constant coefficient of traction of the drive wheels with the rail in the mode of elastic sliding under any working loads.
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Date submitted2003-07-30
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Date accepted2003-08-18
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Date published2004-02-01
Modular complexes and the formation of design and engineering solutions in coal seam development
- Authors:
- V. V. Gabov
- A. K. Loginov
- M. I. Smirnov
Modern means of complex mechanization of mining operations are effectively used only under favorable conditions. For this reason, the forced restructuring of the coal industries in many countries, which is accompanied by the closure of mines and entire basins, is not possible. We are searching for new alternative means of integrated mechanization of mining operations. Developed modular complexes of selective action are promising for the development of coal seams in difficult mining and geological conditions.
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Date submitted2003-07-14
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Date accepted2003-08-01
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Date published2004-02-01
Hardware design of pressurized oil collection and treatment systems
- Authors:
- M. V. Golubev
Properly selected hardware design is the key to stable and efficient operation of sealed well collection and treatment systems.
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Date submitted2003-07-09
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Date accepted2003-08-12
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Date published2004-02-01
Classification of hydraulic transport systems
- Authors:
- V. P. Dokukin
When optimizing technical systems, the level of problem solving is established, on the basis of which the list of optimized parameters and operating conditions of the system are formed. For this purpose it is necessary to classify objects of the studied type. The classification of pipeline hydraulic transport systems, made on the basis of the system approach, is proposed.
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Date submitted2003-07-04
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Date accepted2003-08-27
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Date published2004-02-01
Numerical modeling of problems of design and operation of transport machines in mining works
- Authors:
- S. V. Doronin
- Yu. A. Plyutov
Problems of transport machine design and operation, which are most effectively solved within the framework of computational modeling with the use of finite element and statistical modeling methods, are systematized. The nature of the results and prospects of their use in decision-making on the optimization of design parameters and operating modes are considered.
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Date submitted2003-07-21
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Date accepted2003-08-07
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Date published2004-02-01
Bulk inline crushing of rock mass by mobile machines with powerful percussion units as an alternative to drilling and blasting
- Authors:
- Yu. D. Krasnikov
The design of mobile machines with powerful percussion units for in-line mass crushing of rock masses is considered.
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Date submitted2003-07-05
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Date accepted2003-08-16
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Date published2004-02-01
Determination of geometric parameters when calculating the main drives of mining shovels
- Authors:
- S. Yu. Kuvshinkin
The analytical dependences linking geometric parameters required to calculate the forces and capacities of the main drives of the quarry excavator, with its design dimensions and parameters of the face are given and substantiated. The use of these dependences greatly facilitates and accelerates the operational calculations, as it eliminates the elements of a graphic solution.
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Date submitted2003-07-22
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Date accepted2003-08-26
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Date published2004-02-01
Increasing the productivity of roller cone drilling machines
- Authors:
- K. A. Lukashov
The most widely used in the Russian quarries are SBSH roller cone drill rigs. Machines of this type are in need of modernization, in particular with the purpose of increasing the drilling efficiency. The method of increasing the productivity of the SBSH rig with the help of a top hammer and the effect of its use on the drilling speed are considered.
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Date submitted2003-07-01
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Date accepted2003-08-24
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Date published2004-02-01
Rational placement of teeth in the peripheral rings of the drill bit cones
- Authors:
- Yu. G. Matveev
- A. N. Popov
- A. A. Chekhov
The work of the carbide peripheral armament of roller cones is analyzed by graphoanalytical method. It is shown that the task of ensuring the effective operation of this armature remains relevant. The main factors reducing the efficiency are the formation of slats on the peripheral and pre-peripheral parts of the bottom hole and spiral protrusions on the borehole wall. A solution to this problem is proposed and substantiated by means of pairwise placement of teeth in double-row peripheral crowns in combination with additional undercutting teeth on the periphery of the cones.
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Date submitted2003-07-01
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Date accepted2003-08-12
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Date published2004-02-01
Multifunctional brush peat machines
- Authors:
- A. V. Mikhailov
A brief review of the current state of the Russian peat industry in relation to the technologies of milled peat extraction and the analysis of the trends that lead to the improvement of equipment of peat production are given. The problems facing the peat engineering industry are formulated and the direction of intensification of milled peat production by means of re-equipment and modernization of the main technological equipment is proposed.
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Date submitted2003-07-03
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Date accepted2003-08-16
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Date published2004-02-01
Pumps for transporting petroleum products over long distances
- Authors:
- A. B. Nezametdinov
Transportation of petroleum products by pipelines in Russia is carried out by centrifugal pumps of type NM in accordance with GOST. A description of the operation of a volumetric explosion pump, protected by a patent of the Russian Federation, which allows to reduce the number of pumping pumping stations at main slurry pipelines, is given.
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Date submitted2003-07-09
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Date accepted2003-08-15
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Date published2004-02-01
Specific features of hydrotransport systems operation in winter conditions
- Authors:
- A. K. Nikolaev
The analysis of operating conditions of above-ground slurry pipelines of mining enterprises in conditions of negative temperatures is carried out. The results of theoretical and experimental studies of the heat exchange process in the two-phase flow taking into account the distribution of velocity and concentration of the solid phase across the cross section of the pipe are presented.
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Date submitted2003-07-06
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Date accepted2003-08-24
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Date published2004-02-01
Bench tests of pneumatic perforators with a twin hammer
The results of studies of impact processes, including the system piston - striker - rod, are considered. The energy of the shock pulse family at the impact of the piston with the striker is 10-20 % higher than this indicator at the impact with the solid piston. Based on the results of bench studies, the design of a perforator with a dual percussion system was designed and tested in the conditions of the Kirov mine of ОАО Apatit.
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Date submitted2003-07-03
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Date accepted2003-08-18
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Date published2004-02-01
Technologies and equipment for peat extraction and processing
For years of existence of the institute efforts of several generations of scientists and engineers created large powered technology and enabling technologies for peat production and processing. Their developments were based on in-depth theoretical and extensive experimental study. Last years the is being constantly improving both technology and equipment for mining the milling peat, development of brush machines, pneumatic harvesting machines, sod peat machines, technology and equipment for peat processing, including agriculture, horticulture and preservation of the environment.
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Date submitted2003-07-27
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Date accepted2003-08-15
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Date published2004-02-01
Improvement of technologies of productive formation penetration to enhance oil recovery
- Authors:
- N. I. Slyusarev
- S. P. Mozer
- R. A. Ibraev
Improving the efficiency of hydrocarbon recovery from the subsurface largely depends on the development systems, technologies and quality of the productive strata opening. One of the methods for intensification of production and completeness of oil recovery is underbalanced drilling-in using horizontal and horizontal-branch wells. For these conditions the choice of flushing solution and regulation of its structural and rheological properties at a given level is fundamental.
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Date submitted2003-07-03
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Date accepted2003-08-20
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Date published2004-02-01
Design and application of drilling machine actuators for quarries
- Authors:
- N. N. Strabykin
- A. E. Belyaev
- A. A. Chernyi
Theoretical and experimental studies and accumulated experience of drilling in specific conditions make it possible to determine the main technical directions of improving well drilling efficiency, which result from the necessity to bring in line the type and parameters of drilling tools, system of drilling fines transportation from the well, drilling technology, properties of drilled rocks, fracture products and intensity of their formation. Irkutsk Technical University has developed and implemented at a number of quarries cutting bits with auger cleaning and blowing, lubrication systems, compressed air cooling units.
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Date submitted2003-07-25
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Date accepted2003-08-24
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Date published2004-02-01
Experimental studies of the thickening process of slurry in the near-bottom zone
- Authors:
- Yu. D. Tarasov
- P. V. Shishkin
The method of increasing the efficiency of hydromechanized extraction of ferromanganese nodules of the Baltic Sea is proposed. The object of the research are the processes occurring in the perforated insert located behind the power unit in the bottom zone and designed to remove excess water and sludge. The design of the perforated spigot and the relationship between its length and the parameters of the extraction process are described. The design scheme of the laboratory bench, the data obtained during the experiment and the results of their primary processing are presented.
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Date submitted2003-07-02
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Date accepted2003-08-04
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Date published2004-02-01
Dynamic rock destruction machine systems
The percussive method of rock destruction makes it possible to expand the field of application of machine technologies when carrying out mine workings over strong rocks. The designs of high-capacity manipulator percussion devices have been developed, bench and mine tests have been carried out. Currently, work is underway to create a clearing machine for extracting construction materials and minerals in quarries.
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Date submitted2003-07-27
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Date accepted2003-08-29
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Date published2004-02-01
Determination of feed force on drilling tools depending on the direction of the wells
- Authors:
- K. P. Khmyznikov
The methodology for calculating the axial force of the drill rig feed mechanism when drilling a circular fan of boreholes depending on their direction is considered.
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Date submitted2003-07-29
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Date accepted2003-08-13
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Date published2004-02-01
Some problems of main oil pipelines
- Authors:
- V. V. Shaidakov
- R. N. Khisaev
The issues of accumulation and utilization of oil sludge generated during the operation of oil and gas pipelines in the OAO North-West Trunk Oil Pipelines are considered.
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Date submitted2003-07-04
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Date accepted2003-08-06
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Date published2004-02-01
Shock-pulse hydraulic fracturing
- Authors:
- A. V. Shipulin
Shock and pulse stimulation allows loosening of the near-wellbore formation zone without the danger of long fractures. Compared with conventional hydraulic fracturing technology, the processing is carried out with low material costs, without the use of expensive equipment, with a low probability of pipe bursting.
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Date submitted2003-07-21
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Date accepted2003-08-23
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Date published2004-02-01
Optimization of the parameters of drum mills
- Authors:
- V. V. Shutov
Extraction and processing of mineral resources in Russia will be one of the foundations of our country's economy in the 21st century. Among the tasks that are especially urgent nowadays for industries processing minerals is minimizing energy consumption. A significant part of energy in processing minerals is spent on their crushing. Today, the main grinding equipment in the mining industries are drum mills. Therefore, an important, if not the main, direction to reduce energy consumption in the processing of minerals should be recognized the improvement of the design of exactly drum mills. The analysis of the current state and directions of improvement of drum mills are given.
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Date submitted2003-07-09
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Date accepted2003-08-14
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Date published2004-02-01
Problems of improving the efficiency of power supply to mining and oil and gas enterprises
- Authors:
- B. N. Abramovich
The problems of improving the efficiency of power supply of mining enterprises: reducing capital investment in the power supply system, justification and implementation of energy-saving technologies that allow to limit at a rational level the energy component of the cost of mining, transportation and processing of minerals, as well as ensuring the quality of electricity at a level that meets the requirements of GOST.
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Date submitted2003-07-07
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Date accepted2003-08-24
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Date published2004-02-01
Design and simulation of a vector-controlled electric drive for a drilling rig rotator
- Authors:
- V. V. Alekseev
One of the main directions of improvement of electromechanical and electrical technologies for mining and oil and gas industry is design and application of vector control systems of frequency drives with asynchronous motors. Calculation methodology of asynchronous electric drive vector control system regulators for drilling rig rotator is shown. The schemes and models of electric drive made in Dispas and Matlab systems are given. Transients in the drive with 4A280S6 motor are presented.
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Date submitted2003-07-06
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Date accepted2003-08-18
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Date published2004-02-01
New power sources for traction electric drive of dump trucks
- Authors:
- D. M. Beznosenko
Deteriorating environmental conditions in the places of operation of dump trucks make it necessary to look for an alternative to traditional thermal engines. Widespread use of hybrid electric propulsion systems with the use of electric energy storage devices allows to partially solve environmental problems without loss of autonomy of vehicles.
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Date submitted2003-07-09
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Date accepted2003-08-20
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Date published2004-02-01
Electric drive of stabilization systems of technical means of shelf development
- Authors:
- N. M. Beznosenko
- A. E. Kozyaruk
In connection with the intensive development of shelf zones of seas and oceans, it is proposed to replace DC motors in the system of stabilization of technical means of shelf development with AC motors with a modern control algorithm.
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Date submitted2003-07-28
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Date accepted2003-08-14
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Date published2004-02-01
Ways to increase the efficiency of the use of open-pit vehicles
- Authors:
- O. M. Bolshunova
The basic directions of increase of efficiency of using of quarry motor transport are analyzed: careful choice of dump truck model; development of systems of control of loading of heavy-duty dump trucks; use of new automated systems of control of quarry motor transport. The modern automated system of dispatching of mobile quarry equipment, functioning with the support of global GPS positioning system, is considered.
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Date submitted2003-07-24
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Date accepted2003-08-12
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Date published2004-02-01
Borehole electrical technologies for drilling and enhanced oil recovery
- Authors:
- E. A. Zagrivnyi
- A. E. Kozyaruk
- S. N. Bataev
The article considers electric technologies of thermal drilling of deep wells in ice sediments and electrothermal installations for enhanced oil recovery in formations with heavy high-viscosity oil. The characteristics of the downhole electric heater and the results of the enlarged technical and economic evaluation of the effectiveness of electrothermal complexes are given.
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Date submitted2003-07-04
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Date accepted2003-08-14
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Date published2004-02-01
Optimization of drive parameters for electric mine locomotives
- Authors:
- V. N. Kordakov
- A. A. Korzhev
The state of mine electric locomotive transport and the main directions of mine electric locomotive drive improvement are shown. The expediency of introducing a new train weight limitation into the traction calculation methodology under the condition of electric locomotive drive acceleration is indicated. The criterion for electric locomotive drive control when moving the assembled train from the place is given, the implementation of which allows to increase the service life of trolleys coupling devices. The possibility of increasing traction properties of mine electric locomotives by means of combined drive is considered. The efficiency of using of traction motors with mixed excitation on mine electric locomotives is shown.
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Date submitted2003-07-06
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Date accepted2003-08-06
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Date published2004-02-01
VACON frequency converters in the mining industry
- Authors:
- E. A. Kutuzov
VACON Plc. develops, manufactures and supplies low-voltage frequency converters for various industries, provides technical information about the products and application options for the mining industry.
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Date submitted2003-07-17
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Date accepted2003-08-16
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Date published2004-02-01
RIT-D electric drive for a drilling rig
The particularities of the construction of a DC drive system with two control channels are considered
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Date submitted2003-07-08
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Date accepted2003-08-04
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Date published2004-02-01
Methodology for forming the control action of the complete drive of drilling rigs
- Authors:
- N. V. Nefedova
Long-term work of a number of geological and exploration industry teams on improvement of exploration drilling machines showed the necessity of systematization of accumulated experience in the field of electrical equipment development, combining such components as electric drive, remote control system and system of acquisition and analysis of technological drilling parameters. Until now each of these components was considered as a separate element, solving separate tasks. Complex approach in creation of unified structure allowed to develop a model of control system considering a number of technological process parameters and a technique of forming control action of complete electric drive.
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Date submitted2003-07-17
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Date accepted2003-08-29
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Date published2004-02-01
Adaptive phasic automatic control system for concentrators
An adaptive phasic automatic control system designed to stabilize various parameters of technological processes of concentrating plants is considered. The system adapts to unregulated, unaccounted for in the basic calculation changes in technological parameters.
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Date submitted2003-07-03
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Date accepted2003-08-11
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Date published2004-02-01
Automatic control of loading of dump trucks
- Authors:
- M. A. Semenov
- O. M. Bolshunova
- Yu. A. Gavrilov
The analysis of loading control of open-pit dump trucks with the use of loading passports is presented. Advantages and disadvantages of automatic control of loading by means of built-in on-board systems are considered.
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Date submitted2003-07-23
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Date accepted2003-08-30
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Date published2004-02-01
Laboratory bench based on flame and gas detection sensors
- Authors:
- M. A. Semenov
- I. A. Pavlov
- N. P. Kulikov
A modern flame detector (sensor), which determines the moment of fire initiation, and a gas detector, which measures the concentration of various gases in the environment, are considered. A laboratory bench was developed to study and investigate the operation of these sensors.
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Date submitted2003-07-16
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Date accepted2003-08-25
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Date published2004-02-01
Application of HF energy in gold-bearing sands beneficiation technology
- Authors:
- O. B. Shonin
The justification of parameters of technological chamber and heating mode as applied to the problem of preparation of gold-bearing sands for enrichment is given. On the basis of electrothermal-physical model of interaction of HF-electromagnetic field with imperfect dielectric the system of equations linking parameters of generator and technological chamber, rock feeding rate and its effective parameters, taking into account continuous phase transition, which degree of manifestation depends on the clay fraction content, is obtained.
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Date submitted2003-07-08
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Date accepted2003-08-05
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Date published2004-02-01
Modeling and designing system of hydraulic lift of mined rock at submarine development of mineral raw materials
- Authors:
- V. I. Aleksandrov
- E. Sobota
One of complicated aspects in designing and developing of deep-water complexes is estabfishing economical and safe systems of elevating carrying out transportation of valuable fossil from underwater face up to aqueous surface to transport vessel. Very perspective for elevating of rock mass are submarine modules with submersible camera, connected with transport piping, along which the transportation of mineral raw in the form of mixtures is carried out. To practically unknown questions, directly associated with the possibility of designing and building up of submersible cameras, the calculation of the parameters of the vertical elevating of rock mass with higher depths can be applied.
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Date submitted2003-07-22
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Date accepted2003-08-10
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Date published2004-02-01
Improvement of the shear unit for sterile sampling of ice core
- Authors:
- N. E. Bobin
- M. Yu. Mirokhin
Conventional methods of cleaning the surface of a rock sample by taking a microbiological sample from it when working with ice are unsuitable. A method of sterile sampling from the inner part of the ice core is proposed, in which the outer part of the sample serves as a reliable screen protecting the sample from extraneous microflora. The main thing is to obtain an uncontaminated section of the ice surface. This is possible if such an area is obtained by shearing and is not in contact with the instrument. The design of the unit device USL-3M is proposed, which allows to obtain a clean core chipping surface at 3-4 mm depth of knife penetration into ice and at least 10-15 mm thickness of the outer layer of ice, which is not included into the sample.
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Date submitted2003-07-26
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Date accepted2003-08-05
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Date published2004-02-01
Technical means for the study of subglacial reservoirs in the example of Lake Vostok in Antarctica
- Authors:
- N. E. Bobin
- P. G. Talatai
- S. V. Yankilevich
The results of research work aimed at the development of special technical means to penetrate into subglacial lakes in order to take water samples with the condition of compliance with the measures excluding its contamination are presented.
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Date submitted2003-07-03
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Date accepted2003-08-24
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Date published2004-02-01
Research and analysis of roll hardening
- Authors:
- Yu. P. Boitsova
- G. V. Ivanova
It was established experimentally that the greatest influence on the wear resistance and fatigue strength have the force and profile radius of the tool. The fatigue resistance of the samples at a rolling force of 600 N has increased by 2.5 times. Strengthening of flanges allowed increasing the number of load cycles from 21000 to 405100 (15-20 times).
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Date submitted2003-07-28
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Date accepted2003-08-16
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Date published2004-02-01
Specifics of designing equipment for drilling wells in glaciers
- Authors:
- N. I. Vasilev
- P. G. Talalai
- L. M. Savatyugin
The peculiarities of design of technical means intended for drilling wells in glaciers are considered. Polar and high-mountain regions of the Earth are characterized by a unique combination of unfavorable conditions for practical activity, therefore, besides general requirements for design of technical means, special requirements for weight and dimensions, power consumption and operational characteristics of used materials are made. Specific technical solutions of drilling room constructions, means of lowering and lifting and auxiliary operations, as well as measures aimed at reduction of material and energy intensity of drilling operations on glaciers are presented.
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Date submitted2003-07-11
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Date accepted2003-08-08
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Date published2004-02-01
Influence of environmental salinity on the mechanical strength of sealing cement stone as a function of time
- Authors:
- S. Vilk
The results of laboratory studies to determine the effect of time on the change in the mechanical strength of sealing cement stone used in drilling, depending on the degree of salinity of the environment in which the seasonal study of cement stone samples were carried out, are presented and analyzed.
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Date submitted2003-07-30
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Date accepted2003-08-19
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Date published2004-02-01
Environmental consequences of rock salt extraction by the borehole method
- Authors:
- S. Vilk
- Ya. Traple
- S. Luchinski
Due to the development of industry in the 1970s and the demand for chemical raw materials, the exploitation of the salt deposit near Kraków began with the borehole method. Mining operations in a very complex geological area with a change in the exploitation system led subsequently to the formation of a system of connected chambers, disturbance of hydrogeological conditions in the borehole, phenomena of land surface subsidence and other types of deformations. The characteristics of the exploitation of the salt deposit, the volume of extraction, as well as its consequences are presented.
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Date submitted2003-07-28
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Date accepted2003-08-09
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Date published2004-02-01
Features of gear design with combined displacement
Application of the combined displacement when designing gears allows to considerably expand the area of existence of meshing with non-standard radial clearance. The influence of the parameters of the rack-shaped producing contour on the region of the meshing existence is shown, the technology of the tangential displacement realization during gear cutting is described.
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Date submitted2003-07-19
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Date accepted2003-08-21
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Date published2004-02-01
Experimental evaluation of wear resistance of spur gears
- Authors:
- S. L. Ivanov
- A. S. Fokin
Extensive opportunities to influence the properties of involute gears are available with combined displacement of tooth profiles - a combination of radial and tangential displacements, including the use of cutting tools with a standard initial contour. In particular, by combined displacement, the bending strength and wear resistance of cylindrical gear teeth can be increased by one and a half to two times, which is commensurate with material replacement.
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Date submitted2003-07-11
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Date accepted2003-08-16
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Date published2004-02-01
Technological and dynamic studies of new designs of vibrating crushers
- Authors:
- S. V. Kazakov
- R. M. Babaev
- M. Yu. Tyagushev
The principal and constructive features of vibroinertial crushers are considered, the fields of their application, new approaches to their calculation and design are indicated. The considered equipment is intended both for selective opening of rocks and for disintegration of any hard, brittle materials. Selective opening of crystallites with minimum overgrinding is achieved by applying to the bulk layer of material of strictly dosed compressive forces of inertial nature and impulse vibration shear loads, causing a gradual softening of interfacial bonds. The main compressive and shear forces in these machines are created by centrifugal forces of inertia, and the material, being destroyed in the layer, is subjected to intensive vibration action.
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Date submitted2003-07-25
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Date accepted2003-08-17
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Date published2004-02-01
Current state of trunk pipeline welding
- Authors:
- A. E. Korchemkin
Trunk gas and oil pipelines, being a link between oil and gas production areas and the areas of their processing and consumption, belong to the category of exceptionally critical engineering structures, during their construction welding is the most important operation, largely determining the operational reliability.
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Date submitted2003-07-03
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Date accepted2003-08-06
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Date published2004-02-01
Energy service life of the plain bearing
- Authors:
- E. A. Kremcheev
- S. L. Ivanov
Design schemes of pneumatic, hydraulic and drilling machines with combined drive, used in mines and mines, mainly have mechanical drives of drilling rod rotation. This refers to machines of domestic and foreign production. A considerable part of failures of drilling equipment occurs exactly due to the fault of rotary units. One of the weak points of the design is often the transmission output shaft support unit made on the basis of plain bearing. The energy and life of such a sliding bearing is limited by the limit value of wear, leading to the occurrence of unacceptable misalignment of the gear wheels’ axes. The expression for determining the energy resource of the plain bearing from the condition of permissible volume wear of the liner material is proposed.
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Date submitted2003-07-29
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Date accepted2003-08-08
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Date published2004-02-01
Ways to improve the quality of operation of quarry road transport systems in modern conditions
- Authors:
- A. A. Kuleshov
The structure of the system of quarry motor transport, differentiated criteria of its quality are considered. The analysis of the current quality level of each of the subsystems is given. The methods and means of solving problems of qualitative performance by the system of its functions are shown. The scheme of dispatching of technological motor transport on the basis of satellite communication-GPS-system of global positioning of the observed object (dump truck) is given.
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Date submitted2003-07-15
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Date accepted2003-08-22
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Date published2004-02-01
On the construction of a monitoring system for the operation of self-propelled equipment in underground mines
The possibility of monitoring of underground self-propelled equipment is shown. The use of on-board measuring instruments in combination with software systems for planning, accounting of work, organization of maintenance and repair, as well as a systematized approach to accounting for the influence of operating conditions on the efficiency of the underground self-propelled machine operation has been suggested.
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Date submitted2003-07-17
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Date accepted2003-08-26
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Date published2004-02-01
Prospects for the development of underwater deposits of ferromanganese nodules on the seabed
- Authors:
- B. S. Makhovikov
- V. V. Shornikov
The prospects for development of underwater deposits of iron-manganese nodules are considered, the design of an underwater hydraulic mining complex is described, the calculation of the configuration of the route and characteristics of the flexible pipeline connecting the mining module with the receiving vessel is given. The load on the executive body of the mining machine is calculated and the design of the flow part of the driven direct flow multistage hydraulic turbine is described.
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Date submitted2003-07-08
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Date accepted2003-08-01
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Date published2004-02-01
Development, research and implementation of environmental equipment
- Authors:
- E. V. Parakhonskii
More than half of solid minerals are extracted in Russia by open pit mining. The development of large deposits is usually carried out by quarries of considerable depth, which is constantly increasing. Increasing the depth of quarries, as a rule, contributes to the deterioration of working conditions and atmospheric air pollution both in and around the quarries. A brief review of special quarry fans, designed for the organization of artificial ventilation of quarries by means of a brushless method, as well as installations for reclamation of slopes of rock dumps, is given.
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Date submitted2003-07-21
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Date accepted2003-08-18
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Date published2004-02-01
Prospective directions in the field of transport machine reliability analysis
- Authors:
- Yu. A. Plyutov
- S. V. Doronin
Limitations of the mathematical theory of reliability as applied to mechanical elements of transport machines are considered. A new approach based on the use of defect statistics, results of stress state calculation, fracture mechanics apparatus and real data on transport machines loading processes is offered. Prerequisites for calculation of transport machines survivability as a further development of reliability concept are considered.
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Date submitted2003-07-20
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Date accepted2003-08-27
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Date published2004-02-01
Prospects for using underwater exploratory drilling rigs
The proposed underwater exploratory drilling rig guarantees the sinking of wells in specified geological conditions with observance of safety requirements, environmental friendliness and high quality of works at a relatively low cost. The machine is a part of the drilling complex, which in addition to the machine usually includes: a base vessel, a lowering-raising system, a power supply system, a control, monitoring and protection system, an emergency system, etc.