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Inversion of Initial Stress Field in Large Underground Plant Area of Pumped Storage Power Station
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Wei-feng ZHENG1, Le-hua WANG1, Sheng LUO2, Xiao-yu HAN2, Xin-hui ZHANG2, Zhi-hong DONG2
Water Resources and Power | 2023, 41(11) : 143 - 147
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Water Resources and Power | 2023, 41(11): 143-147
• WATER CONSERVANCY AND HYDROPOWER ENGINEERING •
Inversion of Initial Stress Field in Large Underground Plant Area of Pumped Storage Power Station
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Wei-feng ZHENG1, Le-hua WANG1, Sheng LUO2, Xiao-yu HAN2, Xin-hui ZHANG2, Zhi-hong DONG2
Affiliations
  • 1.College of Civil Engineering and Architecture, China Three Gorges University, Yichang 443002, China
  • 2.Key Laboratory of Geotechnical Mechanics and Engineering of MWR, Changjiang River Scientific Research Institute, Wuhan 430010, China
Published: 2023-11-25 doi: 10.20040/j.cnki.1000-7709.2023.20230229
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The characteristics and distribution of in-situ stress field have an important influence on the stability and engineering design of the surrounding rock of underground power house. According to the deep surface drilling hole and engineering geological conditions of the underground power house of a pumped storage power station, a three-dimensional numerical analysis model was established, and the inversion reconstruction of the initial in-situ stress field was realized through multiple linear regression analysis. The results show that the maximum horizontal principal stress measured in deep holes is 6.7-17.6 MPa. The magnitude and direction of the inversion model are in good agreement with the measured value, and the horizontal stress in the underground workshop area is dominant, and the maximum horizontal principal stress is 16.2-17.4 MPa. The maximum principal stress azimuth of the stress field in the plant area is less than 30°, and the stress distribution and azimuth angle meet the design requirements. The research results provide a reference for similar large-scale underground projects.

initial in-situ stress field  /  deep hole in-situ stress test  /  multiple linear regression  /  main plant axis
Wei-feng ZHENG, Le-hua WANG, Sheng LUO, Xiao-yu HAN, Xin-hui ZHANG, Zhi-hong DONG. Inversion of Initial Stress Field in Large Underground Plant Area of Pumped Storage Power Station[J]. Water Resources and Power, 2023 , 41 (11) : 143 -147 . DOI: 10.20040/j.cnki.1000-7709.2023.20230229
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20230229
  • Receive Date：2023-02-21
  • Online Date：2026-01-27
  • Published：2023-11-25
Article Data
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History
  • Received：2023-02-21
  • Revised：2023-03-25
Funding
Affiliations
    1.College of Civil Engineering and Architecture, China Three Gorges University, Yichang 443002, China
    2.Key Laboratory of Geotechnical Mechanics and Engineering of MWR, Changjiang River Scientific Research Institute, Wuhan 430010, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20230229
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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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