Disk Rock Cutting Tool for the Implementation of Resource-Saving Technologies of Mining of Solid Minerals

Manietyev, Leonid; Хорешок, А. А.; Tsekhin, Alexander M.; Borisov, Andrey Yu.

doi:10.1051/e3sconf/20172103005

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…The further increase in the number of closed mines in the region and the expansion of areas where processes of technogenic changes in the environment are intensively developing make it necessary to carry out the following activities [11]: utilization of technogenic wastes, which are, on the one hand, a factor of harmful impact on the environment and, on the other hand, an unconventional source of a number of scarce useful components;…”

Section: Discussionmentioning

confidence: 99%

Environmental Consequences of Coal Mine Elimination

Tyuleneva¹

2018

Proceedings of the 9th China-Russia Symposium “Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protecti

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Mines have an impact on all components of the environment during and after coal mining. Process of restructuring coal industry and elimination of unprofitable mines changes anthropogenic impact on the environment. Structural and technological change in the geological massif is terminated, but other types of negative impact on the environment continue become more active. Elimination of coal mines is accompanied by the emergence of new phenomena and processes that were not in the period of operation of enterprises and that have a negative environmental impact. The degree of impact of the mine on the environment depends on many factorsgeological conditions, hydrogeological factors, development and quality of land allocated for mine workings. As a result of the combined effect of negative factors during mine elimination, sustainable increase in the area of territories with active development of flooding communal and industrial facilities, agricultural lands, communication facilities, transport highways are appeared. As a consequence processes of pollution of surface water and groundwater are activated, that combined with ground surface depression, accumulation of potential energy in flooded mine workings with the formation of hydro-geo-mechanical stresses and decrease of resistance of rock masses. Geochemical pollution of industrialurban and agricultural landscapes is observed almost everywhere. The paper lists types of environmental pollution that occurred after elimination of coal mines. Possible ways of solving environmental problems of mine elimination are considered.

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Section: Discussionmentioning

confidence: 99%

Environmental Consequences of Coal Mine Elimination

Tyuleneva¹

2018

Proceedings of the 9th China-Russia Symposium “Coal in the 21st Century: Mining, Intelligent Equipment and Environment Protecti

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“…In terms of ensuring stability, those layout schemes of boring auger complexes have a particular perspective, whose design feature is to provide a common plane for the axis of the boring hole and vectors of axial forces of the auger feeding mechanisms [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

The Step Feed Mechanisms For Auger Machines

2019

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The paper presents the results of studies of technical solutions proposed in Kuzbass State Technical University and implemented in auger drilling equipment, characterized by the presence of a cyclic feed of a boring machine on the face and the corresponding reverse of the work by hydraulic jacks. Operation of complexes, which design feature is to provide a common plane for the axis of the boring hole and vectors of axial forces of the auger feeding mechanisms, was researched. The stress state of the cyclic step-feeding mechanism’s functional elements by mathematical and software means of the finite element analysis is considered. The threshold values of the feed forces are determined from the point of view of ensuring the safety margin of welded joints used in the cyclic step-feeding mechanism’s structure, and from the point of operational reliability of the system as a whole. The obtained data allowed making recommendations for further improvement for the subsystem of the auger’s cyclic step-feeding mechanism.

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Relationship between the Power of the Two-Bit Cutting Body Rotation Drive of the Roadheader and Hardness of Broken Rock

et al. 2018

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Abstract. The motion patterns of the cutting body of a roadheader with two kinematically connected reversible radial bits equipped with a disk tool on trihedron prisms are presented. The regularity of the disks motion under the action of forces applied to them is considered with allowance for the moments of inertia. The scheme of forming the depth of intrusion by the biconical disc tool of radial bits into the face rock strata is substantiated. The calculated dependences of the total torques ΣМk on the cutting body of the roadheader are obtained from the angle  of the bits rotation, taking into account the contact strength Pk of the rock strata to be broken. The calculation is made of the power of the rotation drive of the two-bit cutting body with a disk tool on trihedral prisms in breaking the rock strata in the range of strength characteristics for the mines of Kuzbass.

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Disk Rock Cutting Tool for the Implementation of Resource-Saving Technologies of Mining of Solid Minerals

Cited by 3 publications

References 10 publications

Environmental Consequences of Coal Mine Elimination

Environmental Consequences of Coal Mine Elimination

The Step Feed Mechanisms For Auger Machines

Relationship between the Power of the Two-Bit Cutting Body Rotation Drive of the Roadheader and Hardness of Broken Rock

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