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Mechanism and engineering practice of roof stability for secondary gob-side entry retaining in deep mines. [PDF]
Sci RepWu J, Chen J, Xie F.
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Study on fracture propagation and evolution characteristics of coal samples under uniaxial compression. [PDF]
Sci RepWeibin G +4 more
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Design of fault water-resisting coal pillars based on deep-beam analysis: A comparison of two analytical methods. [PDF]
PLoS OneWang B, Zha W, Lu H.
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Numerical Simulation of Strata Behavior in Super-Long and Large Mining Height Working Face
Advanced Materials Research, 2013In order to study the strata behavior characteristics in super-long and large mining height working face, the FLAC-3D software was used to study the roof displacement and the abutment pressure distribution laws of working faces. The results indicate that: ① the influence range is larger of front abutment pressure in Liuzhuang coal mine 171301 super ...
Zhi Hua Li, Li Zhi Hua
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Geotechnical and Geological Engineering, 2020
In this paper, according to problems of large deformation, high stress and strong disturbance exist in the retracement roadway during the equipment withdrawal of 18,205 large height mining working face in Xiegou mine. The method of roof cutting and pressure release by deep-hole blasting is put forward.
Yufeng Guo, Hong Yu
exaly +2 more sources
In this paper, according to problems of large deformation, high stress and strong disturbance exist in the retracement roadway during the equipment withdrawal of 18,205 large height mining working face in Xiegou mine. The method of roof cutting and pressure release by deep-hole blasting is put forward.
Yufeng Guo, Hong Yu
exaly +2 more sources
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
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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
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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
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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
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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
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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
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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
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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