Results 11 to 20 of about 11,011,498 (241)
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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Prediction of the caved rock zones’ scope induced by caving mining method [PDF]
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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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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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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Future underground mining at LKAB Svappavaara: potential to combine caving and stoping methods
, 2022 Two of LKAB’s Svappavaara area open pit operations, Gruvberget and Leveäniemi, nestled between Kiruna and Malmberget SLC mines, have been initially considered for transition to underground mining using SLC or block caving methods.
Saiang, David +3 more
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Research on automatic memory coal caving control
Gong-kuang zidonghua, 2019 For low coal caving efficiency, poor coal caving quality and other problems existing in manual coal caving control mode of fully-mechanized top coal caving working face, an automatic memory coal caving control method was proposed by referring to memory ...
CUI Zhifang, NIU Jianfeng
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Gong-kuang zidonghua, 2020 Due to the difference between fully-mechanized caving face and single stoping process face, there would be a big error in predicting gas emission rate on fully mechanized caving face by use of AQ 1018-2006 The Predicted Method of Mine Gas Emission Rate ...
WANG Xiaopeng
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