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Numerical Simulation of Failure of Overburden in Coal Mining under Reservoir
Advanced Materials Research, 2011The Water-flowing fractured zone’s height and its distribution has an important effect on stability of the surrounding rock and the safety in the subsequent production under reservoir. In the paper the Drucker-Prager yielding law is used. The limit value of tensile stress and shear stress is used to judge the water-flowing fractured zone’s height and ...
Zhong Chang Wang, De Shen Zhao
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Study on failure of roof overburden and high ground pressure control under deep repeated mining
Engineering Failure AnalysisDezhong Kong, Guiyi Wu, Yu Xiong
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Mining with Filling for Mitigating Overburden Failure and Water Inrush Due to Coalmining
2014This paper investigates the heights of overburden failure with cut-and-fill mining method using empirical formula, scaled model tests and numerical simulations. An equivalent cutting height was proposed for calculating overburden failure with formulas and from measurement data. Scale model tests and numerical simulations show that the heights of caving
Wanghua Sui +3 more
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Rock Mechanics and Rock Engineering, 2016
To reveal the mechanical response of a multi-pillar supporting system under external loads, compressive tests were carried out on single-pillar and double-pillar specimens. The digital speckle correlation method and acoustic emission technique were applied to record and analyse information of the deformation and failure processes. Numerical simulations
Zilong Zhou +5 more
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To reveal the mechanical response of a multi-pillar supporting system under external loads, compressive tests were carried out on single-pillar and double-pillar specimens. The digital speckle correlation method and acoustic emission technique were applied to record and analyse information of the deformation and failure processes. Numerical simulations
Zilong Zhou +5 more
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Evaluation Method for Impermeability Failure of Stope Overburden
10th Academic Conference of Geology Resource Management and Sustainable Development 2022, 2022Ruifang Qu, Yunbo Li
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Model test of the overburden deformation and failure law in close distance multi-seam mining
Journal of Coal Science and Engineering (China), 2008Based on characteristic of the associated mining of multi-coal seam and the engineering geological characteristics of overburden, the mining impact pattern of multiseam mining and the dynamic fracture mechanism of overburden were characterized by applying the engineering geological mechanical model test.
Wei-feng Yang +2 more
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Statistical Prediction of Overburden Failure Due to Coal Mining Under Sea Area
2013This paper presents a statistical prediction of the height of water flowing fractured zone due to coal mining under sea area. Some field measurement methods were used in the Beizao, Liangjia, Wali and Huangxian Coalmines in Shandong Province, China, to investigate the failure process and the maximum height of water flowing fractured zone under ...
Z. M. Xu, W. H. Sui
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Three-Dimensional Seepage Field Analysis of Thick Overburden CFRD after Sealing Failure
Applied Mechanics and Materials, 2013According to characteristics of the thick overburden dam and the current and main problems on seepage of the thick overburden concrete face rock-fill dam, this paper takes finite element method to analyze the three-dimensional seepage field of thick overburden CFRD after the joint sealing failure, and studies the seepage field distribution of the CFRD ...
Wen She He, Liang Ming Wang
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Study on failure characteristics of overburden in extra thick coal seam mining
Environmental Earth Sciences, 2022Chang Liu +4 more
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