Frame mine structure for underground mining of thick ore bodies

Еременко, В. А.; Umarov, A.R.; Galchenko, Yu. P.; Lipnitskiy, N. A.

doi:10.17580/gzh.2021.09.02

Cited by 3 publications

(2 citation statements)

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“…Gob-side entry support commonly uses concrete-filled steel tubular columns, combined hydraulic supports, high-strength anchor bolts, and their combined support forms [17][18][19]. Many scholars have conducted extensive research on the structural traits, deformation traits, and control technologies of the surrounding rock under this technology, and the findings are highly impressive [20][21][22]. The promotion and use of GERF is greatly impacted by some researchers' analysis of a large number of typical engineering scenarios and systematic summary of the application circumstances of gob side filling materials and support technology [23].…”

Section: Introductionmentioning

confidence: 99%

Mechanics Principle and Implementation Technology of Surrounding Rock Pressure Release in Gob-Side Entry Retaining by Roof Cutting

Zhu

et al. 2022

Processes

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Improving coal resource mining rates has long been a focus of coal industry research. The gob-side entry retaining by roof cutting (GERRC) is a new coal mining technology that has gained popularity in China due to its high mining rate and safety. Based on the GERRC technology, the precise technical procedure is elaborated, and the fundamental idea of pressure relief is explored through creating a structural mechanics model of the surrounding rock in this paper. The results of mechanical analysis show that the primary mechanism of roof pressure release is to weaken the integrity of the roof, thereby reducing the ultimate bending moment of the rock stratum. In addition, an additional strategy for pressure release is suggested in this research, involving the weakening of the roof rock by the creation of dense pressure-released holes. The results of the engineering field experimentation demonstrate that the dense pressure-released holes can completely replace the conventional blasting technology of the past to achieve the effect of releasing the roof pressure, thus avoiding the use of hazardous and challenging-to-obtain explosives and demonstrating safety, reliability, and feasibility.

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Section: Introductionmentioning

confidence: 99%

Mechanics Principle and Implementation Technology of Surrounding Rock Pressure Release in Gob-Side Entry Retaining by Roof Cutting

Zhu

et al. 2022

Processes

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“…Development of the basic concepts of the convergent geotechnologies with preventing and eliminating direct effect of in-situ stresses [11][12][13] opens new vistas for the cardinal modification of the customary method of block caving [6].…”

Section: Introductionmentioning

confidence: 99%

Justification of new opportunities for the use of the gravitational energy of the earth in underground ore mining with convergent geotechnologies

Eremenko¹,

Galchenko²,

Yanbekov³

2022

Self Cite

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The paper describes R&D project results on justification of a new approach to the induced caving of ore using convergent geotechnologies. In this case, the optimized conditions are created for self-caving of ore in block-structure rock mass based on the evaluated limiting exposed span using, among other things, the Mathews-Potvin stability graph. The ore self-caving design solutions include formation of a density discontinuity in the form of a vertical slit in rock mass, as well as different inclinations of sides of the manmade separation and outlining backfill frames. The authors calculate the potential gravitational energy of the Earth, which is accumulated within the dome of natural equilibrium generated in the course of mining.

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New Capabilities of the Earth’s Gravitational Field Energy in Underground Ore Mining with Convergent Technologies

Galchenko

Еременко²,

Yanbekov³

2022

J Min Sci

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Frame mine structure for underground mining of thick ore bodies

Cited by 3 publications

References 0 publications

Mechanics Principle and Implementation Technology of Surrounding Rock Pressure Release in Gob-Side Entry Retaining by Roof Cutting

Mechanics Principle and Implementation Technology of Surrounding Rock Pressure Release in Gob-Side Entry Retaining by Roof Cutting

Justification of new opportunities for the use of the gravitational energy of the earth in underground ore mining with convergent geotechnologies

New Capabilities of the Earth’s Gravitational Field Energy in Underground Ore Mining with Convergent Technologies

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