Results 1 to 10 of about 2,878 (183)
The stability study of goaf based on C-ALS data point cloud and FLAC3DCoupled modeling [PDF]
E3S Web of Conferences, 2021 Through drilling and three-dimensional scanning by C-ALS laser, the spatial position and size of mined-out area can be obtained. It can provide important technical basis for safety management and evaluation of goaf.
Jia Huihui, Xue Jianzhi
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Three-dimensional Technical Observation Device for Super Large Area Upper and Lower Composite Goaf
Meikuang Anquan, 2020 In view of the shortcomings of the traditional observation methods for the super large area goaf, especially the upper and lower composite goaf, we developed a stereoscopic technology observation device for the super large area upper and lower composite
TAO Zhiyong, LI Bin
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Comparative study of multiple machine learning algorithms for risk level prediction in goaf
Heliyon, 2023 With the acceleration of the mining process, the goaf has become one of the main sources of danger in underground mines, seriously threatening the safe production of mines.
Bin Zhang, Shaohua Hu, Moxiao Li
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Comprehensive Evaluation and Decision for Goaf Based on Fuzzy Theory in Underground Metal Mine
Advances in Civil Engineering, 2022 In underground metal mines, goaf brings huge safety risks. It is an important part of mine to evaluate goaf stability and determine the best goaf handling measures.
Rongxing He +5 more
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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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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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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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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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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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