Results 21 to 30 of about 844 (164)
EnergiesTo investigate the movement law of top coal and the influencing factors of coal caving ratio in fully mechanized top coal caving faces, this study adopts the theory of dispersoid mechanics. First, a top coal flow model was established without considering
Jinhu Zhang +6 more
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Mechanism by Which Backfill Body Reduces Amount of Energy Released in Deep Coal Mining
Shock and Vibration, 2019 Deep coal mining is unavoidable, and the complex mining environments and the increasing dangers associated with ultrahigh energy accumulation and release from mining disturbances renders it extremely difficult to maintain a safe and stable stope.
Wenyue Qi +4 more
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EnergiesAs China enters the stage of deep coal mining, the accidents caused by roof failure pose increasingly serious threats. Current research on roof failure zones often use single methods, but single geophysical data may result in multisolution issues during ...
Zilong She +5 more
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Theory and key technologies for intelligent fully-mechanized top-coal caving faces of annual production of millions of tons [PDF]
Meitan kexue jishuThe research focused on addressing various challenges in intelligent top caving theory, intelligent perception and recognition key technology, intelligent caving comprehensive decision-making technology, and remote caving intelligent control technology ...
Bin YU +7 more
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Systematic principles of surrounding rock control in longwall mining within thick coal seams
International Journal of Mining Science and Technology, 2019 Effective surrounding rock control is a prerequisite for realizing safe mining in underground coal mines. In the past three decades, longwall top-coal caving mining (LTCC) and single pass large height longwall mining (SPLL) found expanded usage in ...
Jiachen Wang, Zhaohui Wang
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Geofluids, 2018 Comprehensive mechanization solid backfilling mining is a new technology developed in China for coal mining and surface subsidence control. Based on a gangue-backfilling project in the Yangzhuang Coal Mine, the characteristics of underlying strata and ...
Huaizhan Li, Guangli Guo
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Numerical simulation of influence parameters on induced stresses distribution during first weighting process of longwall mining [PDF]
, 2022 Investigation of first weighting process due to greater caving span and higher induced stresses when compared to the periodic ones is imperative in the planning stage of a longwall coal mining project.
Kakaie, Reza +3 more
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矿业科学学报, 2019 Water and sand inrush is one of the principal factors that restrict safe and effective production of mining under water body.The threat to soft strata mines with extremely thick coal seam is especially more serious.Caving zone and fissure zone(joint name
Zhang Bin +3 more
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Optimization of Caving Technology in an Extrathick Seam with Longwall Top Coal Caving Mining
, 2021 The optimization of top coal caving technology is an efficient method to improve the recovery ratio in longwall top coal caving (LTCC). In extrathick coal seams, the conventional single-opening sequential caving technology (SOSCT) shows the following ...
Lianghui Li, Liu Yang, Weijie Wei
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Energy Science & Engineering, 2022 Traditionally, longwall top coal caving (LTCC) panels adopt the single‐window drawing mode and their drawing efficiency is relatively low. The synchronous multi‐window drawing (SMWD) mode is a remarkable approach to resolve the incompatibility between ...
Tielin Zhao +5 more
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