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Initial Ground Stress Inversion and Surrounding Rock Stability Analysis of Underground Powerhouse of Wuyue Pumped Storage Power Station
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Bin REN1, Fan ZHANG1, Yong-sheng LI1, Yong-jian ZHOU2, Zhou-rui ZHANG2, Kai CHEN1, Yun LIU1
Water Resources and Power | 2023, 41(5) : 117 - 120
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Water Resources and Power | 2023, 41(5): 117-120
• WATER CONSERVANCY AND HYDROPOWER ENGINEERING •
Initial Ground Stress Inversion and Surrounding Rock Stability Analysis of Underground Powerhouse of Wuyue Pumped Storage Power Station
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Bin REN1, Fan ZHANG1, Yong-sheng LI1, Yong-jian ZHOU2, Zhou-rui ZHANG2, Kai CHEN1, Yun LIU1
Affiliations
  • 1.Henan Xinhua Wuyue Pumped Storage Power Generation Co., Ltd., Xinyang 465450, China
  • 2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
Published: 2023-05-25 doi: 10.20040/j.cnki.1000-7709.2023.20220500
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The underground powerhouse of Henan Wuyue Pumped Storage Power Station has a complex structure of caverns. The main powerhouse has a maximum span of 26.0 m and a height of 55.1 m, which is a large underground chamber. The rock mass structural planes are developed and the strength is low. The fault F1 runs through the three powerhouse, and the safety problems are prominent. The stability of surrounding rock after excavation should be analyzed. Therefore, FLAC3D program was used to establish the geological model. The BSA-BP neural network was used to calculate the initial in-situ stress field of the area. And then the excavation of underground powerhouse was simulated. The stress field, displacement field and plastic zone development and distribution law of surrounding rock were analyzed. The results show that the surrounding rock of underground powerhouse caverns group is basically stable. However, local deformation and failure may occur in the fault development area and at both ends of the busbar hole. The research results can provide guidance for the design and construction of the project, and provide some reference for similar projects.

pumped storage power station  /  underground powerhouse caverns  /  FLAC3D  /  geostress inversion  /  BSA-BP neural network  /  surrounding rock stability
Bin REN, Fan ZHANG, Yong-sheng LI, Yong-jian ZHOU, Zhou-rui ZHANG, Kai CHEN, Yun LIU. Initial Ground Stress Inversion and Surrounding Rock Stability Analysis of Underground Powerhouse of Wuyue Pumped Storage Power Station[J]. Water Resources and Power, 2023 , 41 (5) : 117 -120 . DOI: 10.20040/j.cnki.1000-7709.2023.20220500
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20220500
  • Receive Date：2022-03-17
  • Online Date：2026-01-28
  • Published：2023-05-25
Article Data
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  • Received：2022-03-17
  • Revised：2022-07-25
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Affiliations
    1.Henan Xinhua Wuyue Pumped Storage Power Generation Co., Ltd., Xinyang 465450, China
    2.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20220500
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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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