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Mechanisms of Thick-Hard Roof and Thin Aquifer Zone Floor Destruction and the Evolution Law of Water Inrush [PDF]

Water (Switzerland)
The collapse of thick-hard roofs after coal has been extracted is not a consequential process in all cases. Rather, it happens due to the augmentation of high stress conducted at depth, followed by a wider range of damage as the floor cracks.
Shangxian Yin, Min Cao
exaly +2 more sources

Research on the Reasonable Width of Coal Pillar Driving along Goaf under Thick Hard Roof [PDF]

Applied Sciences (Switzerland)
There are fewer studies on the width of coal pillar retaining under a thick, hard roof. This paper takes the thick limestone roof in the 10110 working face of Jinniu Coal Mine as the background, taking the reasonable coal pillar width and its stability ...
Zhenfei Han, Dalong Xu, Wei Gu, Hao Zhang +3 more
exaly +2 more sources

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thick-hard roof
extra-thick coal seam

Ground Control Method of Using Roof Cutting Pressure Release and Energy-Absorbing Reinforcement for Roadway with Extra-Thick Hard Roof

Rock Mechanics and Rock Engineering, 2023
Bei Jiang, Manchao He, He Manchao
exaly

Fracture analysis of double-layer hard and thick roof and the controlling effect on strata behavior: A case study

Engineering Failure Analysis, 2017
Lishuai Jiang, Jinquan Jiang, Xuesheng Liu +2 more
exaly

Fracture failure analysis of hard–thick sandstone roof and its controlling effect on gas emission in underground ultra-thick coal extraction

Engineering Failure Analysis, 2015
Hongyong Liu, Yuanping Cheng
exaly

Comprehensive roof cutting, pressure relief, and energy absorption anchorage control for mining roadways with extremely thick and hard roofs