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Analysis on Seepage Characteristics and Varied Critical Slip Surface of Ionic Rare Earth Mine Slope Under Different Rainfall Intensities
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Guozhu RAO1, Yunzhang RAO2, Zhongquan GAO2, Min HAN2, Xiaoming ZHANG3, Zhihua YANG2, Run XIANG2, Laiye ZHANG3
Mining and Metallurgical Engineering | 2024, 44(3) : 22 - 27
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Mining and Metallurgical Engineering | 2024, 44(3): 22-27
• MINING •
Analysis on Seepage Characteristics and Varied Critical Slip Surface of Ionic Rare Earth Mine Slope Under Different Rainfall Intensities
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Guozhu RAO1, Yunzhang RAO2, Zhongquan GAO2, Min HAN2, Xiaoming ZHANG3, Zhihua YANG2, Run XIANG2, Laiye ZHANG3
Affiliations
  • 1.School of Emergency Management and Safety Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
  • 2.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
  • 3.School of Civil and Surveying Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
Published: 2024-06-01 doi: 10.3969/j.issn.0253-6099.2024.03.005
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A slope of ionic rare earth mine was taken to study the variation of pore water pressure in the slope during and after rainfall events with different rainfall intensity, and the varied critical slip surface during these two periods of time was also studied by using the finite element Morge nstern-Price method. The results show that the rainfall intensity is a significant factor affecting the pore water pressure of shallow slope of ionic rare earth mine. The hysteresis property of rainwater infiltration into the slope is the internal reason for hidden risk of potential slope instability after rainfall events. The greater rainfall intensity will lead to faster formation of the 289 slip surface, higher peak value of greatly changed safety factor, as well as longer influence time. It is proposed for the first time that the development of ionic rare earth mine slope under rainfall conditions may experience four stages: safety, drastic internal variation, high landslide susceptibility, and relative safety.

ionic rare earth mine  /  slope stability  /  pore water pressure  /  numerical simulation  /  slip surface  /  rainfall  /  seepage characteristics
Guozhu RAO, Yunzhang RAO, Zhongquan GAO, Min HAN, Xiaoming ZHANG, Zhihua YANG, Run XIANG, Laiye ZHANG. Analysis on Seepage Characteristics and Varied Critical Slip Surface of Ionic Rare Earth Mine Slope Under Different Rainfall Intensities[J]. Mining and Metallurgical Engineering, 2024 , 44 (3) : 22 -27 . DOI: 10.3969/j.issn.0253-6099.2024.03.005
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doi: 10.3969/j.issn.0253-6099.2024.03.005
  • Receive Date：2023-11-20
  • Online Date：2026-03-17
  • Published：2024-06-01
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  • Received：2023-11-20
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Affiliations
    1.School of Emergency Management and Safety Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
    2.School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
    3.School of Civil and Surveying Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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