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Multi-criteria decision analysis of gas enrichment risk and land degradation in goaf areas. [PDF]

Sci Rep
Wang L, Li Y, Lei Y.
europepmc   +1 more source

Study on the law of stress distribution in the presence of remaining coal pillar in a close-distance coal seam and the reasonable location of the roadway. [PDF]

Sci Rep
Wei XX, Zhao ZQ, Wang YW, Wang XH, Hui ZL.   +4 more
europepmc   +1 more source

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Study on the Influence of the Location of Dirt Band on Top Coal Caving Property in Extra-Thick Coal Seam

Geotechnical and Geological Engineering, 2020
The influence of dirt band on the top coal caving property is usually analyzed from the thickness and hardness of the dirt band. For the extra-thick coal seam with a thickness of more than 20 m, the location of the dirt band also has a huge impact on the top coal caving property. In this paper, No.
Chaowen Hu, Yongtao Wang, Hu Chaowen
exaly   +2 more sources

Dynamic monitoring the deformation and failure of extra-thick coal seam floor in deep mining

Journal of Applied Geophysics, 2019
Abstract With the increasing depth of mining, the disasters of water inrush above confined aquifers tends to increase annually, which seriously threatens the safe mining of coal seam , especially the extra-thick coal seam floor in deep mining.
Pingsong Zhang, Xiangyun Hu
exaly   +2 more sources

Quantitative Study on the Law of Surface Subsidence Zoning in Steeply Inclined Extra-Thick Coal Seam Mining

Sustainability, 2022
The damage of overlying strata and ground surface caused by the one-time mining space is relatively severe in steeply inclined extra-thick coal seams. The unique law of surface subsidence at these conditions is still missing.
Yueguan Yan, Yanjun Zhang, Yuanhao Zhu   +2 more
exaly   +2 more sources

Rockburst in Extra-Thick Coal Seam Mining: Mechanism and Prevention

Sitao Zhu, Fuxing Jiang, Xiufeng Zhang, Jinhai Liu   +3 more
exaly   +2 more sources

Research on the Height of Water Flowing Fractured Zone of Fully Mechanized Caving Mining in Extra-thick Coal Seam

Procedia Engineering, 2011
Failure height of overlying rock mass in extra-thick coal seam conditions by fully mechanized caving mining affects the groundwater occurrence condition, which in turn, affects mine safety.
Shaojie, FENG, Shiguo, SUN, Yuguo, LV, Ji, LV   +3 more
exaly   +2 more sources

Effects of Different Factors on the Mining of Extra-Thick Coal Seam

2018
Based on the mining case of Dafosi Coal Mine in Shaanxi Province, which is a typical coal mine with extra-thick coal seam, the effects of mining width, buried depth and rock grade on the ground surface deformation and sur-rounding rock stress have been studied by numerical experiments.
Naifei Liu, Zhu Zhang, Ning Li, Min Yang, Yuanyang Ren   +4 more
openaire   +1 more source

Research on the overburden deformation and migration law in deep and extra-thick coal seam mining

Journal of Applied Geophysics, 2021
Abstract To understand the problem of water damage to the roof caused by instability and deformation of overburden deep coal seams in the Ordos mining area, the rock stratum migration mechanism was analyzed according to the geological conditions of the Tangjiahui coal mine, and a vertical borehole observation system was established based on the ...
Binyang Sun, Pingsong Zhang, Rongxin Wu, Maoru Fu, Yuanchao Ou   +4 more
openaire   +1 more source

Analysis of Rock Burst Mechanism in Extra-Thick Coal Seam Controlled by Thrust Fault under Mining Disturbance

Processes
A fault is a common geological structure encountered in underground coal mining. Interactions between the discontinuous structure of a fault and mining activities are the key factors in controlling the rock bursts induced by the fault.
Zhiliu Wang
exaly   +2 more sources