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Numerical Study on Groundwater Seepage Characteristics in Strata with Varying Dip Angles
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Jianguo PAN1, Lihai TAN2, Jia SHENG3, Huaide PENG2
Uranium Mining and Metallurgy | 2025, 44(4) : 27 - 41
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Uranium Mining and Metallurgy | 2025, 44(4): 27-41
• MINING AND HYDROMETALLURGY •
Numerical Study on Groundwater Seepage Characteristics in Strata with Varying Dip Angles
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Jianguo PAN1, Lihai TAN2, Jia SHENG3, Huaide PENG2
Affiliations
  • 1.CNNC Geological Exploration Group Co., Ltd., Beijing 100013, China
  • 2.School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, China
  • 3.National Engineering Research Center for Metal Mining, Changsha Institute of Mining Research Co., Ltd., Changsha 410012, China
Published: 2025-11-20 doi: 10.13426/j.cnki.yky.2025.01.02
Outline
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In the numerical study of groundwater seep characteristics in rock mass under different rock dip angles, the influence of seep field on internal defects such as holes and joints, the influence of seep field on rock mass stability, and the instability mechanism of rock mass under the coupling of seep field and ground stress field were seldom considered. This study employed discrete element software (PFC) to define fluid domains, simulating fluid-solid coupling evolution and rock mass failure behavior under coupled geostress and seepage fields. Macroscopic and microscopic analyses were conducted to investigate instability mechanisms. The results indicate that the coupling of high-stress fields and low-seepage fields can induce crack propagation in weak zones, such as crack tips, leading to rock mass failure. Compared to stress fields alone, coupling effects exhibit distinct failure patterns. Additionally, under low water pressure, seepage pressure can suppress tensile crack propagation at crack tips, primarily resulting in compressive failure zones. This research provides theoretical insights for understanding seepage behavior and assessing rock mass stability in complex engineering conditions.

fluid domain  /  rock mass failure  /  stress-seepage coupling  /  dip angle of rock strata  /  discrete element software  /  rock mass instability  /  simulation research
潘建国, 谭力海, 盛佳, 彭怀德. 不同岩层倾角下岩体内部地下水渗流特征数值研究. 铀矿冶, 2025 , 44 (4) : 27 -41 . DOI: 10.13426/j.cnki.yky.2025.01.02
Jianguo PAN, Lihai TAN, Jia SHENG, Huaide PENG. Numerical Study on Groundwater Seepage Characteristics in Strata with Varying Dip Angles[J]. Uranium Mining and Metallurgy, 2025 , 44 (4) : 27 -41 . DOI: 10.13426/j.cnki.yky.2025.01.02
Year 2025 volume 44 Issue 4
120
31
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Article Info
doi: 10.13426/j.cnki.yky.2025.01.02
  • Receive Date:2025-01-07
  • Online Date:2026-09-28
  • Published:2025-11-20
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  • Received:2025-01-07
Funding
Affiliations
    1.CNNC Geological Exploration Group Co., Ltd., Beijing 100013, China
    2.School of Resource Environment and Safety Engineering, University of South China, Hengyang 421001, China
    3.National Engineering Research Center for Metal Mining, Changsha Institute of Mining Research Co., Ltd., Changsha 410012, China
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https://castjournals.cast.org.cn/joweb/yky/EN/10.13426/j.cnki.yky.2025.01.02
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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
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Percentage of
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属
Genus
种数
Number of
species
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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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