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Optimization of Caving Technology in an Extrathick Seam with Longwall Top Coal Caving Mining [PDF]
Advances in Materials Science and Engineering, 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 ...
Liu Yang, Lianghui Li, Weijie Wei
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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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Research on Top Coal Caving Technique in Steep and Extra-Thick Coal Seam
Procedia Earth and Planetary Science, 2011 AbstractReasonable caving method is an important guarantee of realizing high-yield and high-efficient of the working face. Based on the specific conditions of the 2637 working face in Zhaogezhuang Mine, compared extraction rates under different top coal caving technology with field tests and similar material simulation, adopted the multi-turns interval
Yang Gao
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Meikuang Anquan, 2020 In order to study the influence of different incline angles on the shape of top coal caving body, and the influence of different strike angles and different caving styles on the top coal caving rate of large angle fully mechanized top coal caving face ...
ZHANG Bei, YANG Yuanzhong
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Structure and deformation measurements of shallow overburden during top coal caving longwall mining
International Journal of Mining Science and Technology, 2017 Mining induced pressures are strong and overburden failure areas are large in top coal caving longwall mining, which constrains high production and safety mining.
Sheng Li +5 more
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Meikuang Anquan, 2022 Based on the discrete element development environment YADE under Linux environment, this paper develops a three-dimensional simulation system for continuous feeding and coal caving in fully mechanized caving face.
YANG Yi, GAO Yang, LUO Kaicheng, WANG Keping, FEI Shumin
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Research and application of key technology of intelligent coal caving in high gas fully-mechanized top coal caving face [PDF]
Meitan kexue jishu, 2023 At present, intelligent coal caving in high gas fully mechanized top coal caving face is facing many problems, mainly including poor recognition accuracy of coal gangue, incomplete control research on coal flow and gas concentration, cumbersome design ...
Yao CUI +3 more
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Determination on Reasonable Mining Height and Top Coal Caving Technology in Huating Coal Mine
Meikuang Anquan, 2020 In view of the problems, such as coal wall spalling, roof caving and low recovery rate of top coal in 250107-1 fully mechanized caving face of Huating Coal Mine at present, the method of combining FLAC3D numerical analysis and theoretical calculation ...
QIAO Zhongdong, QU Ying, YANG Guohong, LIU Biao
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Longwall top coal caving automation concept [PDF]
E3S Web of Conferences, 2021 This paper describes history of the longwall top coal caving technology. The devices capable to promote wider application of LTCC are discussed. The advantages, shortcomings and their elimination methods are specified. The authors designate the objectives to be met to implement the maximum potential of LTCC. The industry approach to these objectives is
Nikitenko Sergey +3 more
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Meikuang Anquan, 2020 This paper systematically summarizes the development process of fully mechanized top coal caving technology and equipment in Yankuang Group in recent 30 years.
MENG Xiangjun, LI Mingzhong, YUE Ning, SUN Jishuang
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