Results 11 to 20 of about 1,276 (260)
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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矿业科学学报, 2020 When the coal-seams are multi-layered, the stress and permeability of the caving zone are disturbed again during the following coal seam mining. Repeated unloading and compaction cause caved coal and rock to break further in the caving zone, which in ...
Wang Wei +6 more
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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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Environmental Microbiome, 2023 AbstractBackgroundCave anthropization related to rock art tourism can lead to cave microbiota imbalance and microbial alterations threatening Paleolithic artwork, but the underpinning microbial changes are poorly understood. Caves can be microbiologically heterogeneous and certain rock wall alterations may develop in different rooms despite probable ...
Bontemps, Zélia +4 more
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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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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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矿业科学学报, 2019 Water and sand inrush is one of the principal factors that restrict safe and effective production of mining under water body.The threat to soft strata mines with extremely thick coal seam is especially more serious.Caving zone and fissure zone(joint name
Zhang Bin +3 more
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Law of coal caving behind the flexible shield support in pseudo-inclined working face.
PLoS ONE, 2021 Complex boundary conditions are the major influencing factors of coal caving law in the pseudo-inclined working face. The main purpose of this study is to analyze coal caving law of flexible shield support and then to establish the internal relations ...
Qinjian Zhan +3 more
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Shock and Vibration, 2021 This study presents an integrated approach including the theoretical analysis and numerical modelling to investigate the failure characteristics of the overlying strata in the shallow-buried stope.
Guangchao Zhang +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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