Results 11 to 20 of about 1,887 (217)
Optimization Research of Hydraulic Support in Fully Mechanized Caving Face
Procedia Engineering, 2014 AbstractAccording to the problem that the high concentrations of fully mechanized caving face is difficult to control, the mathematical model of solving two-phase flow of gas and dust particles was built by established the k-ɛ-Θ-kp equation. Moreover, by basing on Eulerian-Lagrangian model and Eulerian- Eulerian, and using FLUENT software, the ...
Wen, Nie +5 more
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International Journal of Mining Science and Technology, 2018 When mining the fully-mechanized longwall caving face along strike, the unstable equipment, the low top-coal recovery ratio and the difficulty in controlling surrounding rock may occur due to large dip angle.
Hu Shaoxuan +3 more
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Meitan kexue jishu, 2023 The excavation thickness of the coal seam and the corresponding motion space of the overlying strata are so large in the fully-mechanized top coal caving face, that roof accidents are occur easily.
XU Gang +8 more
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Coal-gangue image recognition in fully-mechanized caving face based on random forest
Gong-kuang zidonghua, 2020 Aiming at problems of high difficulty in parameter adjustment, low prediction accuracy and easy over-fitting in present coal-gangue image recognition methods in fully-mechanized caving face, a coal-gangue image recognition method in fully mechanized ...
XUE Guanghui +3 more
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Gong-kuang zidonghua, 2023 The current research achievements in the construction of intelligent fully mechanized caving face lack systematic implementation case for a specific fully mechanized caving face.
WU Xicang +3 more
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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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Automatic control system of top coal caving on fully-mechanized coal mining face
Gong-kuang zidonghua, 2015 In view of problems of large randomness, low efficiency of coal caving of artificial operation for top coal caving mining face, an automatic control system of top coal caving on fully-mechanized coal mining face was designed.
WEI Wenya
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Research on automatic drawing control system on fully-mechanized coal face with sublevel caving
Gong-kuang zidonghua, 2018 In view of problem of low production efficiency of artificial drawing method on fully-mechanized coal face with sublevel caving, an automatic drawing control system was studied.Sonic sensors, vibrating sensors and ash sensors are installed on hydraulic ...
NIU Jianfeng
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Numerical and in-situ investigation on the ground behavior of the end roof in fully mechanized caving face [PDF]
E3S Web of Conferences, 2021 Fully mechanized top coal caving is a major high-yield and high-efficiency coal mining method for thick seam mining. At present, it is affected by the further popularization and application of fully mechanized caving mining because the recovery rate is ...
Zang Chuanwei +5 more
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Research on overburden structural characteristics and support adaptability in cooperative mining of sectional coal pillar and bottom coal seam. [PDF]
Sci RepIn the mining process of the II1 coal seam at Zhaogu No. 2 coal mine, a method of stratified mining is employed, leaving relatively wide coal pillars in sections.
Feng D +6 more
europepmc +2 more sources