Results 161 to 170 of about 5,124 (199)

Mechanism and control strategies for asymmetric floor heave in extra-thick coal seam roadways under high stress. [PDF]

Sci Rep
Zhang J, Sun J, Wang B, Yang T, He Y, Gao S, Qin G, Zhang Y.   +7 more
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Simulation of deformation characteristics of irregular rock specimens with different mining face lengths. [PDF]

Sci Rep
Zhang Y, Liu X, Wei S, Lin H, Xie J, Ni X.   +5 more
europepmc   +1 more source

Research on discrete element model and caving characteristics of fully-mechanized caving mining based on real coal gangue characteristics calibration

Computational Particle Mechanics
Yang Yang, Shuangjie Ding, Bowen Xie
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Research on mechanism and control of asymmetric deformation of gob side coal roadway with fully mechanized caving mining

Engineering Failure Analysis, 2021
Abstract Considering serious asymmetric deformations and failures of the gob side roadway in fully mechanized top coal caving face and taking coal pillar roadway as engineering background, we have discussed the surrounding stress condition and the deformation failure patterns of coal pillar roadway by the theoretical analysis, numerical calculation ...
Xuhui Xu, Xiaobin Li, Wenrui He
exaly   +3 more sources

Technological optimization of fully mechanized caving mining face with large mining heights

Science in China Series A: Mathematics, 2013
Fully mechanized cave mining with large mining height is a new mining method, due to its large mining thickness and lower roadway excavation, the technology has been widely used in China’s thick seam mining. In order to improve the top-coal recovery ratio of fully mechanized cave mining with large mining height, a study was conducted on optimizing the ...
Lu-Jia Fan, Sheng-Li Yang
exaly   +2 more sources

Analyses on factors influenced top-coal caving of fully mechanized mining for thick coal seam

2011 Second International Conference on Mechanic Automation and Control Engineering, 2011
For the actual implementation of fully-mechanized caving mining in thick coal seam in China, systems analysis of the influence factors of top coal capability, including natural geological factors and technology factors. Influence factors of top coal capability, constitute analysis of fully mechanized caving coal loss, thereby reducing loss of coal ...
null Renjie Gao, null Shaotao Huang, null Xuewei Gong   +2 more
exaly   +2 more sources

Mechanism and Application of Hydraulic Fracturing in the High-Level Thick and Hard Gangue Layer to Improve Top Coal Caving in Fully Mechanized Caving Mining of an Ultra-Thick Coal Seam

Minerals (Basel, Switzerland), 2022
The thick and hard gangue layer has long been one of the key obstacles affecting the coal recovery rate in the fully mechanized top-coal caving mining of ultra-thick coal seams, and it is also one key factor restricting the development of the technology ...
Hongye Luo, Shun Liang, Qiangling Yao
exaly   +2 more sources

Explored the Fully-Mechanized Caving Mining of Water Flowing Fractured Zone

Advanced Materials Research, 2012
In one class mining under water, the height of water flowing fractured zone can realize safe mining is the main parameters. This paper is a stage summary and explored in Tiefa coal group Co., LTD. KangPing coal mine about water flowing fractured zone.This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech ...
Qiang Li, Chun Xi Luo, Ling Hui Meng
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The Overburden Strata Caving Characteristics and Height Determination of Water Conducting Fracture Zone in Fully Mechanized Caving Mining of Extra Thick Coal Seam

Geotechnical and Geological Engineering, 2019
Zhicheng Ren
exaly   +2 more sources