Support Design for Mines Exposed to Rockburst Hazard

Louchnikov, V. N.; Еременко, В. А.; Sandy, M.P.; Kosyreva, M. A.

doi:10.1134/s1062739117032439

Cited by 11 publications

(3 citation statements)

References 4 publications

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“…Compared with the research results in previous literature [16,17,20,21], which are usually obtained from experience, the results in this study are achieved by theoretical analysis and numerical calculation. More importantly, the energy density criterion is established and programmed with FISH language for the rockburst risk evaluation of coal pillars.…”

Section: Discussionmentioning

confidence: 88%

“…In the last 20 years, the mining industry has witnessed a series of remarkable achievements in roadway backfilling mining technology [15][16][17][18]. To deal with the waste disposal problem and the extraction of trip coal pillars, Zhang et al [19] proposed the use of roadway backfilling mining technology by expounding its effect on surface movement.…”

Section: Introductionmentioning

confidence: 99%

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The Influence of the Backfilling Roadway Driving Sequence on the Rockburst Risk of a Coal Pillar Based on an Energy Density Criterion

Xue

Cao

et al. 2018

Sustainability

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The rockburst hazard has always been an important issue affecting the safety production of coal mines in China. The unreasonable sequencing of roadway driving can lead to the dynamic instability of coal pillars, which subsequently causes rockburst accidents in roadway backfilling mining engineering and poses a serious threat to the safety of the mines. Roadway backfilling mining technology is an effective approach with which to mine corner residual coal resources under buildings, railways, and rivers. An energy density criterion is established and programmed with FISH language using numerical analysis software for the rockburst risk evaluation of coal pillars. On this basis, a numerical simulation model is established based on four scheme types, namely, the sequential mining, one-roadway interval mining, two-roadway interval mining, and three-roadway interval mining schemes. The influence of the backfilling roadway driving sequence on coal pillar stability is investigated, and the change law of vertical stress and energy density factor of coal pillars in different driving sequences in roadway backfilling mining technology are analyzed. According to the research results, the maximum energy density factor value of 21,172 J/m4 for coal pillars in one-roadway interval mining is the lowest among the different schemes. Therefore, the one-roadway interval mining scheme is the optimal choice in roadway backfilling mining technology. The results can be treated as an important basis for the prevention and treatment of coal pillar instability and rockburst in roadway backfilling mining technology.

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Section: Discussionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

The Influence of the Backfilling Roadway Driving Sequence on the Rockburst Risk of a Coal Pillar Based on an Energy Density Criterion

Xue

Cao

et al. 2018

Sustainability

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“…The method used in the mines for assessment of damage degree in ore body and rock mass is efficient, and produces qualitative and operational evaluation of rock mass quality; therefore, Barton's Rock Mass Classification is recommended for quantitative evaluation of ore and rock mass under difficult ground conditions in mines (unstable, high-stress, weakened, jointed, faulted, wet rock mass, etc.) in the time of drivage, reinforcement and support of underground openings [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Rating assessment of rocks and ores in the conditions of the Kyzyl-alma deposit of Angren mine department

Kazakov,

Bobarakhimov,

Haqberdiyev

et al. 2023

E3S Web of Conf.

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A comparative analysis of assessing the stability of rock masses was carried out based on rating indicators that are used at foreign underground mining enterprises. An assessment of the state of the rock mass at the Razvedochnaya and Kyzyl Alma mines of the Angren mine was carried out. The method for determining the category of disturbance of an ore and rock massif is effective, gives a quick assessment of the state of the massif - the international Barton rating system is recommended to be used in problem areas (unstable, stressed, weakened, fractured, disturbed (tectonic faults), watered massif, etc.) during excavation, fastening and maintaining workings, for qualitative and quantitative assessment of the state of the ore and rock mass.

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Segmented enlarged‐diameter borehole destressing mechanism and its influence on anchorage support system

Yao

Yin

Zhao

et al. 2020

Energy Science & Engineering

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Large‐diameter borehole destressing technology is one of the main technical measures for the prevention and control of coal mine rock burst. In engineering practice, there is generally a contradicting problem due to the presence of excess destressing which damages support system and insufficient destressing which results in high stress hardly transfer. In this paper, the mechanism of large‐diameter borehole destressing technology and its influence on anchorage support were simulated and analyzed. Based on this, a segmented enlarged‐diameter borehole destressing technology was proposed. The destressing effect at deep part and anchorage strength changing at shallow part of the coal rib were studied under different borehole parameters. Numerical simulation results show that the destressing effect increases with the increase of the borehole diameter, while borehole with oversize diameter increases the deformation of the roadway and weakens the strength of the anchorage support. The diameter‐enlarging point in segmented enlarged‐diameter borehole destressing technology is best placed between the anchorage end and the vertical stress peak point. The anchorage strength is inversely correlated with the diameter of the small‐diameter section, and the destressing effect is positively correlated with the diameter of the large‐diameter section. Based on its advantages in destressing, the segmented enlarged‐diameter boreholes and anchorage support are applied together, and a system of destressing‐support cooperative control of rock burst is presented. The roles in rock burst control of "zone of strong anchorage support" and "zone of low stress and energy dissipation" are described.

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Support Design for Mines Exposed to Rockburst Hazard

Cited by 11 publications

References 4 publications

The Influence of the Backfilling Roadway Driving Sequence on the Rockburst Risk of a Coal Pillar Based on an Energy Density Criterion

The Influence of the Backfilling Roadway Driving Sequence on the Rockburst Risk of a Coal Pillar Based on an Energy Density Criterion

Rating assessment of rocks and ores in the conditions of the Kyzyl-alma deposit of Angren mine department

Segmented enlarged‐diameter borehole destressing mechanism and its influence on anchorage support system

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