Proposed the mathematical model of temperature distribution in borehole and the surrounding mountain, evaluated conditions reliable capacity wells foamed cements in pavements, rock.
In article the possible approach to an assessment of production acceptable risk at level of mining branch or the large enterprise is presented (mine, mine), specifics of which production activity is objectively connected with ineradicable today dangers.
Article represents a historical sketch how there was a formation of principles of safety since the most ancient times up to now. In it is told about formation of legal and social norms in the work sphere for ensuring the right and freedoms working.
In article the main marks of history of social insurance from operational injuries since the Russian Empire and are stated up to now.
The data on the extraction of aluminum and manganese by solution of oleic acid in o-xylene. The possibility of extraction separation of aluminum, manganese and cerium group lanthanides by solvent extraction from nitrate media.
Extraction of iron (III) from nitrate solutions by acid in 1,2-dymethilbenzine was investigated. Dependences of pH and distribution coefficient was obtained. Optimal iron (III) and REM separation conditions was acquired.
The equation to calculate economic damage from losses and dilution of minerals is given in dynamic type. The optimum height of immixed rocks triangle on minimum economic damage from losses and dilution criterion is determined. The equation for determination of the optimum safety berm width when forming the final edge of an open pit is presented.
In the Russian Federation, about 40 % of tailings dumps are in operation GOK. The development of mechanized impossible, due to heavy water production, the stability of the dam breach and the possibility of a breakthrough. In this regard, the task of developing the existing tailings dumps will now increase the competitiveness of enterprises and reduce the cost of iron ore concentrate.
Efficiency and environmental safety of drilling process requires consider of geological conditions of field. The recommendations on the composition of reagents for different geological conditions are given in the article. The results of experimental work are given.
Some results of research of properties of foams which find widespread of application in field of oil, gas and geological prospecting drilling.
Evaluated conditions reliable capacity wells foamed cements in pavements, rock and a current analysis of the temperature field of concrete pavements rocks with varying temperature, which allowed to establish conditions of reliable fastening of wells and the effective application of these foamed cements do not require special technological receptions for drilling of concrete pavements.
The negative effects of electromagnetic waves could be appear during violation of the designing established rules of installation and operating various sources of electromagnetic fields. Permanent action of electromagnetic small intensity waves have negatively influence on the enterprise’s workers. Employees feels tired, working capacity can be reduced, there is an un-reasonable irritability, periodic headaches and dream violation. This article is offers a package of measures to reduce electromagnetic load on staff of JSC «Mordovcement», by introduction of electromagnetic shielding system of the industrial frequency fields.
Algorithm of projecting of deep wells construction, based on analysis of drilling of first deep wells in Norilsk region is composed. Article shows, that usage of new diamond bits improve efficiency of drilling.
Make an inventory composition and purpose of complex techniques equipments for realization investigation works on shelf, accommodated on the swimming drilling rig.
In the article questions of development of mathematical-mechanical model of rock destruction process, abnormal wearout of diamond bits, mechanical and temperature tensions in drill diamonds, technology of drilling with new diamond bits were observed.
In «Tulskoe NIGP» new production technologies of diamond bits were developed and implemented. This technologies allow improve exploitation characteristics of developed equipment and upgrade serial equipment. Examples of technological background organization of serial and modern diamond bit were given for objects «Central-Kola» expedition and geological organizations of republic Uzbekistan.
The analysis of design data of diamond crowns is made. Feature of work of diamond crowns is noted at drilling of rocks, principal views of deterioration of diamonds and a matrix. Are given rekomendatsi on perfection of diamond crowns.
The diversity factors and types of stresses occurring in drilling diamonds crucial thermal and mechanical stresses on stress-deformation condition and, ultimately, the efficiency of diamond tools. Showing ways to improve designs and ways to prevent their crowns abnormal wear.
It is considered the mechanism of formation of cracks of the round closed outline at action on breed of an individual chisel cutter. Pressure hinks arising on a face are investigated. Recommendations about designing of chisel crowns are made.
In this paper results of experimental studies of ice cutting process with using cutter type bits are presented. The bit operation, ranges of rational value of bit taper and rate of penetration are analysed. Reasons causing complications during drilling well in ice deeper then 3000m are determined on the basis well drilling in Vostok station and Dom C and possible ways to overcome them.
The comparative data on the number of employees at work in hazardous conditions, the structure of the circumstances and conditions of professional diseases are identified causes of unsatisfactory working conditions.