Results 11 to 20 of about 2,553 (189)
Research on automatic coal caving control system
Gong-kuang zidonghua, 2018 Aiming at problem that fully mechanized caving face at the back end of fully mechanized top coal caving face adopted manual caving control method, its automation level differed greatly from that at the front end of fully mechanized top coal caving face ...
CUI Zhifang, NIU Jianfeng
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Mathematical Programming Application in Sublevel Caving Production Scheduling
Mining, 2021 Production scheduling determines the most beneficial mining sequence over the life of a mine. Developing a schedule that meets all mining aspects can substantially reduce mining costs and increase profitability.
Soroush Khazaei, Yashar Pourrahimian
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Prediction of the caved rock zones’ scope induced by caving mining method
PLOS ONE, 2018 Critical medium column theory has typically been used to predict the scope of caved rock zone (CRZ) caused by caving mining method. It is essential to understand the distribution laws of lateral pressure induced by caving mining method with different dipping angles.
Fengyu Ren +6 more
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Physical model simulation of block caving in jointed rock mass [PDF]
International Journal of Mining and Geo-Engineering, 2022 Incorrect estimation of undercut dimensions in the block caving method can lead to the cessation of caving operations and loss of a large portion of deposits. Numerical modeling is one of the methods for determining the minimum caving span. Numerical and
Behnam Alipenhani +2 more
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Determination of the Caving Zone and Fracture Zone Heights by Using the LK-Means Algorithm
Advances in Civil Engineering, 2023 The caving zone and fracture zone frequently appear after coal excavation. However, the caving zone and fracture zone can hardly be obtained with an empirical equation. Therefore, identifying a proper method to determine the caving zone and fracture zone
Ze Zhou +4 more
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Method of tail beam posture prediction of top coal caving hydraulic support based on LSTM [PDF]
Meitan kexue jishuFully mechanized caving is the main mining method for extra-thick coal seams in my country. The control accuracy of the caving actuator depends largely on the data feedback of the tail beam posture.
Yupeng YAO, Jinglin ZHANG, Wu XIONG
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Optimization of Caving Technology in an Extrathick Seam with Longwall Top Coal Caving Mining
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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Investigating mechanical and geometrical effects of joints on minimum caving span in mass caving method [PDF]
International Journal of Mining and Geo-Engineering, 2023 This paper investigates the effect of jointed rock mass properties on the Minimum Required Caving Span (MRCS) in the block caving method using numeric and heuristic approaches. To do so, the effects of five parameters of jointed rock mass, namely joint set number, joint spacing, joint inclination angle, joint surface friction angle, and undercut depth ...
Behnam Alipenhani +2 more
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Energies, 2022 Because of the problem of gangue discharge and surface subsidence during coal mining, the current research on underground filling mainly focuses on the paste filling, solid filling, and grouting filling of the overburden separation layer after ...
Liang Li +7 more
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Deep Q-Network for Optimal Decision for Top-Coal Caving
Energies, 2020 In top-coal caving, the window control of hydraulic support is a key issue to the perfect economic benefit. The window is driven by the electro-hydraulic control system whose command is produced by the control model and the corresponding algorithm ...
Yi Yang +4 more
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