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Goaf risk prediction based on IAOA–SVM and numerical simulation: A case study
Underground Space (China)In regard to goaf risk prediction, due to the low accuracy and single prediction method, this study proposes a method that combines the improved arithmetic optimization algorithm (IAOA) – support vector machines (SVM) with GoCAD–FLAC3D numerical ...
Shunchuan Wu, Kegang Li, Rui Yue
exaly +3 more sources
Study on multi-source analysis and prevention of CO in return corner of composite goaf
Case Studies in Thermal EngineeringThe source of CO in the return corner of the composite goaf is more complex than that of a single coal seam, and the CO overrun seriously affects the health and safety of miners and the accurate prediction of coal spontaneous combustion (CSC) in the goaf.
Shiqiang Gao +8 more
doaj +2 more sources
Energies, 2022 Based on the ventilation characteristics of the gob-side entry retaining face, a mathematical model of spontaneous combustion in the gob-side entry retaining face is established.
Jianguo Zhang +5 more
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Pressure distribution characteristics of overlying strata in adjacent fully mechanized mining face
Meikuang Anquan, 2022 After the coal mining face is mined, the pressure transmitted by the surrounding rock in the goaf will experience a process from growth to stability, during this period, the growth rate and pressure distribution of overburden pressure in goaf have a ...
DAI Wenqi
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Hazards of Environmental Disruption in Mine Goafs and Stability Evaluation in Gaofeng Mining Area [PDF]
Nature Environment and Pollution Technology, 2020 China is rich in mineral resources with many points and broad faces in metal and nonmetal mines. However, numerous goafs are formed due to backward mining technology, low intensification degree, incomplete safety precautions, and the excessive ...
Chun Bai, Meng Xian Yun and Jun Mei Wang
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Gong-kuang zidonghua, 2021 It is difficult to fully reflect the distribution of O2 concentration field of coal spontaneous combustion in goaf by using theoretical analysis and experimental research methods to study the impact of high ground temperature on coal spontaneous ...
LIU Yikang1,2 +4 more
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Impacts of train-induced dynamic loads on goaf foundation of Qinshui coalfield
Frontiers in Earth Science, 2023 For the high-speed railway built in the goaf sites, if the influence depth of the additional loads reaches the collapse fault zone of the goaf foundation, the overburden rock mass above the mined area will move again, causing the surface to deform again,
Hui Wang +6 more
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Study on gas migration law in large area goaf under coal spontaneous combustion environment
Meikuang Anquan, 2022 The air leakage flow field in large area goaf is complex, and the air leakage law is not clear. Once coal spontaneous combustion occurs, it will threaten the safety of the mine.
ZHANG Pengyu +4 more
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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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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
doaj +1 more source