Abstract
Occasional collapse failure is a typical occurrence during mine slope excavation processes. This study aimed to investigate the disaster law in the process of mining slope excavation, and further explore the optimal selection of excavation angle. Based on the systematic analysis of the residual sliding force and deformation response characteristics during slope excavation, the increment of the residual sliding force increases and the stability coefficient decreases with the increase in excavation depth. Additionally, a numerical model of the Jinchuan mining area in Jinchuan City, Gansu Province, China was created using the Midas-GTS finite element software. The influence of different excavation slope angles on slope stability was analyzed via numerical simulation under certain step slope height and width. The results show that the force and deformation of the slope were unfavorable to slope stability, and the slope stability coefficient would decrease gradually with the increase in slope angle. In addition, the optimal excavation angle combination ranges were determined as 62°~ 65°, 64°~ 67°, 67°~ 69°, 70°~ 71°, 73°, 75°~ 76°, 77°~ 80°considering the stability and maximum recovery. Therefore, the above research results verify the loading effect of mine slope excavation, and can serve as a reference for studies on the optimal range of excavation angles for the mine slope.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Shandong Province
Open Fund of Key Laboratory of Geological Safety of Coastal Urban Underground Space, Ministry of Natural Resources
Publisher
Public Library of Science (PLoS)
Reference44 articles.
1. Numerical simulation analysis of slope instability and failure of limestone mine in Weibei.;KM Liu;Advances in Civil Engineering,2021
2. Simulations of goaf surface subsidence via filling control.;Y Yang;PLOS one,2022
3. Borehole-Based monitoring of mining-induced movement in ultrathick-and-hard sandstone strata of the Luohe formation.;XZ Wang;Minerals,2021
4. Displacement measurements and numerical analysis of Long-Term rock slope deformation at Higashi-Shikagoe limestone quarry, Japan.;CA Amagu;Advances in Civil Engineering,2021
5. Influence of driving direction on the stability of a group of headings located in a field of high horizontal stresses in the polish underground copper mines.;K AdachPawelus;Energies,2021
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