Results 251 to 260 of about 13,620,505 (264)
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Mine Water and the Environment, 2020
Grouting reinforcement was used to safely and efficiently exploit the thick coal seam in the Jiaozuo coalfield. First, the water inrush possibility of the 11,050 working face was evaluated, using both the floor failure depth and the water bursting coefficient (T) methods.
Shiqi Liu +4 more
openaire +1 more source
Grouting reinforcement was used to safely and efficiently exploit the thick coal seam in the Jiaozuo coalfield. First, the water inrush possibility of the 11,050 working face was evaluated, using both the floor failure depth and the water bursting coefficient (T) methods.
Shiqi Liu +4 more
openaire +1 more source
Risk Identification Method and Application of Roof Water Inrush Under Multi-Working Face Mining
Applied Sciences (Switzerland)Adjacent, multi-working face mining can expand the range of disturbed overburden, increasing the risk of triggering roof water inrush, which threatens the safe operation of coal mines. In this paper, we propose a risk identification method for roof water
Xuesheng Liu
exaly +2 more sources
Advanced Materials Research, 2014
For the study on the problem of rational width of entry protection coal-pillar, according to the gateway of 5103 mining face in Heshan Mine, through theoretical calculation and numerical simulation, rational width of entry protection coal-pillar was educed, which was 25 m.
Xin Bin Xu, Bang Jun Wang, Ting Feng Cui
openaire +1 more source
For the study on the problem of rational width of entry protection coal-pillar, according to the gateway of 5103 mining face in Heshan Mine, through theoretical calculation and numerical simulation, rational width of entry protection coal-pillar was educed, which was 25 m.
Xin Bin Xu, Bang Jun Wang, Ting Feng Cui
openaire +1 more source
Mining Science and Technology (China), 2009
Under fully mechanized, large mining height top coal caving conditions, the shield beam slope angle of the support increases due to the enlargement of the top coal breaking and caving space. This results in a change of the caving window location and dimensions and, therefore, the granular coal-gangue movement and flows provide new characteristics ...
Chang-you LIU +2 more
openaire +1 more source
Under fully mechanized, large mining height top coal caving conditions, the shield beam slope angle of the support increases due to the enlargement of the top coal breaking and caving space. This results in a change of the caving window location and dimensions and, therefore, the granular coal-gangue movement and flows provide new characteristics ...
Chang-you LIU +2 more
openaire +1 more source
Advanced Materials Research, 2012
During the mining process of shallow buried long wall working face, the breaking of main roof easily result in fracture belt’s connectivity with the surface. The paper has studied the causation of roof cutting and support crushing in shallow-buried large mining height long wall working face of Suancigou coal mine which is in Ordos Inner Mongolia.
Yan Fang Ren +3 more
openaire +1 more source
During the mining process of shallow buried long wall working face, the breaking of main roof easily result in fracture belt’s connectivity with the surface. The paper has studied the causation of roof cutting and support crushing in shallow-buried large mining height long wall working face of Suancigou coal mine which is in Ordos Inner Mongolia.
Yan Fang Ren +3 more
openaire +1 more source
Abutment Pressure Distribution Law and Support Analysis of Super Large Mining Height Face
International Journal of Environmental Research and Public Health, 2023Libo Zhang, Xue-long Li
exaly