Results 11 to 20 of about 2,676 (167)
Influence of Goaf on Stability of Transmission Line Tower Foundation [PDF]
E3S Web of Conferences, 2022 There are various rock mass structures in the overlying strata of the goaf, such as cavities, cracks and separation layers. The phenomenon of under compaction with these structures still exists. Under the action of various natural forces, loads and other
Zhang Siyuan +3 more
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Safe and Efficient Coal Mining Below the Goaf: A Case Study
Energies, 2020 Mining at the fully mechanized working face below the goaf of the short-distance coal seam is influenced by the upper goaf. To address this problem, methods such as theoretical analyses, numerical simulation, and on-site measurement are used to study the
Weidong Pan, Shaopeng Zhang, Yi Liu
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Study on hazard zone of coal spontaneous combustion in adjacent goaf along working face
Meikuang Anquan, 2022 To explore the hazard zone of coal spontaneous combustion in the adiacent goaf at different stages of the roadway driving face, the 2202 working face and the 2201 adjacent goaf of Yingpanhao Coal Mine were taken as examples.
WANG Yang +4 more
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Gong-kuang zidonghua, 2021 The shallow thick coal seam in the western mine area in China usually adopts the extraction ventilation method. The surface air leakage makes the wind flow disorderly, and the oxygen of the air penetrates the goaf and interacts with the residual coal in ...
XING Zhen
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Simulations of goaf surface subsidence via filling control
PLOS ONE, 2022 Xincheng Gold Mine is taken as an example to investigate the ground subsidence that results from filling. Both numerical simulations and simulation experiments are conducted to simulate the deformation process at the stope roof and bottom from excavation and filling.
Yong Yang +3 more
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Proactive goaf inertisation for controlling longwall goaf heatings
Procedia Earth and Planetary Science, 2009 AbstractDeep oxygen ingress into the goaf can lead to spontaneous heatings particularly during face stoppage or slow face retreat in the panel. This requires the deployment of proactive goaf inertisation strategies based upon detailed understanding of goaf gas flow patterns and distribution characteristics.
Ren, Ting, Balusu, Rao
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Chemical Engineering Transactions, 2018 To solve the difficulties with predicting and evaluating the goaf water hazard in coal mines, taking the goaf water hazard of one certain coal mine in Shuicheng County, Guizhou Province as the research object, the newly proposed GIS-based AHP ...
Jian Zhao +3 more
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Study on the law of gas desorption under the condition of water flooding of the abandoned block coal in goaf [PDF]
E3S Web of Conferences, 2021 China's coal production has formed a large number of goaf, which contains a large amount of coal and coalbed methane resources. If these resources are stored in the goaf, it will not only cause a waste of resources, but also cause environmental pollution
Wang Ran, Wu Wenbin
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Study on Application of Goaf Management and Residual Mining Technology in Niujuan Deposit [PDF]
E3S Web of Conferences, 2020 For goaf group and high grade embedded residual ore in NO.I ore body, the overall technical idea of pre-filling the key goaf, the residual mining and the non-key goaf filling is used.
Feng Pan-xue, Huang Dan
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Meikuang Anquan, 2020 Aiming at the instability disaster of coal mine goaf, based on the disaster type and hazard analysis, the present situation and progress of the research on the prevention and control technology of the mine goaf instability hazards in China are ...
WANG Donghao, LI Wen, ZHANG Bin
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