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Date submitted2019-07-22
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Date accepted2020-01-04
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Date published2020-04-24
“Ural-20R” combines loading drives evaluation in two-stage development of the face
The technological features of the use of high-performance Ural-20R combines in the conditions of potash mines in Russia are described. It is shown that when the capacity of the worked potash seams is over 4 m, a two-layer ore extraction is used. The formation of cutting process, implemented by the second course of the combine in the treatment chamber, is carried out by an incomplete section of the executive bodies. The standard control system, display and protection of the Ural-20R combine does not allow monitoring and reliable estimation of the magnitude of dynamic components on the drives of the mining machine loads, as well as tracking the feed rate of the combine to the face. The regulation of the operating parameters and the assessment of the degree of loading of the drives of the excavating machine in real time are assigned to the operator. The fundamentals of the experimental research methodology for assessing the loading of drives of Ural-20R combines with the destruction of the potash mass by an incomplete section of the executive bodies are described. The device and the operating procedure of the “Vatur” software-recording complex, which measures, records and records the electrical parameters of the drive motors of a mining machine, is described. The process studies results of forming loads on drive elements of Ural-20R combines when mining a face with an incomplete section of executive bodies are presented. It is proved that the work of combine harvesters on the undercut of the formation with a high feed rate is accompanied by significant dynamic loads on the drives of planetary organs and an overload of the drives of the Berm organs, which leads to an accelerated consumption of the resource and emergency failures of the gearboxes and motors of the extraction machine.
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Date submitted2014-09-13
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Date accepted2014-11-12
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Date published2015-06-26
Complex power supply at well drilling in complicated climate conditions
- Authors:
- V. A. Lebedev
- E. L. Leusheva
- V. A. Morenov
The article deals with the problems of complex power supply of the well construction process in adverse climatic conditions. An option of associated petroleum gas utilization in power units for drilling operations is offered. The method of calculating heat losses of technological objects and required heating capacity for maintaining working temperature is given. A combined heat and power scheme enabling simultaneous electric and heat supply of oilfield objects with the use of associated petroleum gas as an energy source for power generation units is developed. Implementation of such a scheme guarantees power structure functioning without downfalls of produced en-ergy during the year, thus maintaining high efficiency of overall power generation.
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Date submitted2009-10-18
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Date accepted2009-12-17
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Date published2010-09-22
Reuse of development workings as an element of providing the effective coal output
- Authors:
- M. A. Ilyashov
The article contains the results of application in a coal mine of a combined way for protection and support of development workings. This method combines a frame support, anchors and a cast support strip erected behind the longwale. The geomechanical substantiation of technological parameters, regulations and the field for efficient use of this method are given. Its introduction has allowed to increase the loads on longwale and to lower labour content and expenses for maintenance of butt entries.
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Date submitted2009-08-28
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Date accepted2009-10-04
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Date published2010-02-01
The integrated reloading point at the combined auto-railway transportation
- Authors:
- M. M. Yakubovskii
- G. A. Kholodniakov
In article it is considered the technology of creation and exploitation of reloading ore warehouse. As the reloading equipment it is offered to use a hydraulic backhoe excavator. At the combined transport the warehouse is an irreplaceable link in a technological chain. Basic difference from existing schemes of warehousing is that ore is housed not in a stack but in a concentration trench. The concentration trench is formed in immediate proximity from a face. It allows to prolong the operation term of the warehouse and to exclude rigid interdependence of the combined transport links.
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Date submitted2009-08-24
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Date accepted2009-10-06
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Date published2010-02-01
Increase of an overall performance clearing combine complexes by perfection of their structure
- Authors:
- A. A. Yaichnikov
The present stage of development of the coal extraction and the problems arising during their operation is considered. The analysis of an operating mode of the coal extraction with entering updatings into the standard method of an estimation is lead. The technical decision directed on increase of efficiency and stability of work of clearing mechanized complexes is offered.
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Date submitted2009-07-12
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Date accepted2009-09-08
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Date published2010-04-22
Account and movement of reserves in the information system of Silvinit co.
- Authors:
- A. V. Kataev
- S. N. Kutovoi
- E. M. Efimov
- M. V. Gilev
At ore mines of the Silvinit Co. for accounting and movement of reserves are developed and used special tools, using GIS within the information system. Their use allows to automate accounting and monitoring of status and movement of stocks, including the formation of the reporting tables.