Results 11 to 20 of about 1,717 (280)
Strata Caving and Gob Evolution Characteristic in Longwall Mining
Shock and Vibration, 2022 It is usually difficult to capture strata caving and gob evolution characteristic in longwall mining at engineering scales. This paper uses bonded block modelling (BBM) approach within a distinct element method (DEM) code to simulate strata behaviour in ...
Weidong Pan, Xinyuan Li, Zhining Zhao
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Numerical Analysis for the Caving Characteristics of Rock Mass with Inclined Joints in Caving Mining
Advances in Civil Engineering, 2021 In caving mining, the successful initiation and propagation of caving require one low-dip joint set. However, not every mine has a low-dip joint set. The Hemushan Iron Mine in China was taken as the engineering background, and the caving characteristics ...
Jinbo Sui +3 more
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Geofluids, 2022 In order to extract gas accurately in Yue Nan coal mine and prevent gas over limit and gas accidents, a combination of theoretical analysis and numerical simulation was used to investigate the height of the overburden caving zone and fracture zone in the
Xiangjun Chen +4 more
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Model Test of the Water and Sand Mixture Inrush in the Mining-Induced Caving Zone
Geofluids, 2022 In western China coal mines, the mining-induced caving zone is regarded as a main pathway for water and sand inrush mixture hazards. The paper experimentally studied the flow behavior and the mechanism of water and sand mixture through mining-induced ...
Yankun Liang +4 more
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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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International Journal of Mining Science and Technology, 2015 Aimed at determining the appropriate caving–mining ratio for fully mechanized mining of 20 m thick coal seam, this research investigated the effects of caving–mining ratio on the flow fields of coal and waste rocks, amount of cyclically caved coal and ...
Ningbo Zhang, Changyou Liu, Mengsong Pei
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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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FLAC3D Simulation of Caving Mechanism and Strata Fracture Response in Underground Mining
MiningThis paper presents an innovative numerical approach to simulating the progressive caving of rock mass in the overburden and floor during longwall mining.
Mahdi Saadat +2 more
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Energies, 2023 China has abundant coal resources, and the distribution of coal seams is complex. Thick coal seams account for more than 45% of all coal seams. Fully mechanized top coal caving mining has the advantages of large production, high efficiency, and low cost.
Dongdong Chen +9 more
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Journal of Applied Fluid Mechanics, 2018 During ventilation of longwalls, part of the air stream migrates into goaves with caving. In the case where these goaves contain coal susceptible to spontaneous combustion, such air flow through the goaves may lead to the formation of favourable conditions for coal oxidation and, subsequently, for its self-heating and spontaneous combustion.
J. Brodny, M. Tutak
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