Results 11 to 20 of about 717 (138)
Shock and Vibration, 2023 The broken top coal and gangue in the fully mechanized cave mining will be released from the rear of the hydraulic support in the form of bulk. In this process, the medium properties through the coal opening can be judged by monitoring the vibration ...
Lirong Wan +5 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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Shock and Vibration, 2021 Coal particle size is an important factor affecting the gas emission law. Taking Wangjialing coal mine as the research object, the particle size distribution of coal mining and caving is analyzed via field tests in order to develop the gas emission ...
Han Gao +3 more
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Energies, 2017 The key to the safe mining of thick coal seams under rivers is understanding the development patterns of fractured water-conducting zones (FWCZ) when various mining methods are used.
Feng Du, Rui Gao
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Applied Sciences, 2023 Solid backfilling is an environmentally friendly method of coal mining. Backfilling hydraulic supports are important devices in solid backfill mining.
Qiang Zhang +4 more
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Shock and Vibration, 2019 With mining technology and mechanization degree being improving, fully mechanized caving mining technology (FCM) has become a main method for thick coal seam extraction in China.
Yunpei Liang +6 more
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Energy Science & Engineering, 2022 Traditionally, longwall top coal caving (LTCC) panels adopt the single‐window drawing mode and their drawing efficiency is relatively low. The synchronous multi‐window drawing (SMWD) mode is a remarkable approach to resolve the incompatibility between ...
Tielin Zhao +5 more
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Meikuang Anquan, 2023 Aiming at the engineering background of shallow coal seam burial depth, thick soil layer, thin bedrock and strong disturbance of fully mechanized caving mining in the loess gully area of northern Shanxi Province, two methods of comprehensive numerical ...
ZHANG Guoyu, GAO Feng, ZHANG Zhiwei, XING Xudong, ZHU Tao, LIU Kaiwen, SU Jimin, ZHENG Guanghui
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Gong-kuang zidonghua, 2018 Taking No.12051 fully-mechanized coal face of Zhaogu No.1 Coal Mine as research object, thin bedrock deformation and strata behavior in coal seam mining under ultra-thick unconsolidated strata were studied by use of UDEC numerical simulation software ...
ZHAI Xinxian +3 more
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Research on the evolution and height prediction of WCFZ in shallow close coal seams mining
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2023 Based on the mining conditions of shallow close coal seams in the Jurassic coalfield of northern Shaanxi, in order to explore the evolution and development height prediction of water-conducting fracture zone (WCFZ), combining with measured statistical ...
Jian Cao +3 more
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