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Seepage Analysis of Chuangqi Diversion Tunnel Under Condition of Deep Well Dewatering
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Chang-sheng WANG1, Liang ZHAO1, Xian-wei FENG2, Fu-heng MA3, Yu LIU2, Lei GAN2
Water Resources and Power | 2023, 41(1) : 100 - 103
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Water Resources and Power | 2023, 41(1): 100-103
• WATER CONSERVANCY AND HYDROPOWER ENGINEERING •
Seepage Analysis of Chuangqi Diversion Tunnel Under Condition of Deep Well Dewatering
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Chang-sheng WANG1, Liang ZHAO1, Xian-wei FENG2, Fu-heng MA3, Yu LIU2, Lei GAN2
Affiliations
  • 1.Water Conservancy and Irrigation District Engineering Construction Administration of Xixiayuan Water Conservancy Project, Zhengzhou 450000, China
  • 2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
  • 3.Nanjing Hydraulic Research Institute, Nanjing 210029, China
Published: 2023-01-25 doi: 10.20040/j.cnki.1000-7709.2023.20220612
Outline
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Dewatering in deep well would lead to the decline of groundwater level and reduce the strength and stability of the soil, which affects the construction safety of the diversion tunnel. In order to study the influence of deep well dewatering on the seepage field of the tunnel during the construction period, a three-dimensional seepage finite element model of Chuanqin tunnel of Xixiayuan water control project and irrigation area project was established. The construction plan of the tunnel and the change of Qinhe water level were considered to analyze the seepage characteristics of the tunnel under the conditions of deep well dewatering and without dewatering. The results show that the dewatering of the deep wells affects the tunnel excavation, changes the potential distribution characteristics of the seepage field around the deep well, forms a falling funnel on the infiltration surface. The water level contour is in a backwater ring near the deep wells. Compared with the deep well without dewatering, the maximum seepage gradient and unit width seepage flow of deep well dewatering are increased by 18.6 times and 3.3 times, respectively, and the seepage stability of soil layer under all working conditions meets the requirements. The research results can provide a basis for the design and construction of similar water diversion projects.

deep well dewatering  /  diversion tunnel  /  seepage field  /  numerical simulation  /  seepage stability  /  seepage slope  /  seepage flow
Chang-sheng WANG, Liang ZHAO, Xian-wei FENG, Fu-heng MA, Yu LIU, Lei GAN. Seepage Analysis of Chuangqi Diversion Tunnel Under Condition of Deep Well Dewatering[J]. Water Resources and Power, 2023 , 41 (1) : 100 -103 . DOI: 10.20040/j.cnki.1000-7709.2023.20220612
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20220612
  • Receive Date：2022-03-30
  • Online Date：2026-01-28
  • Published：2023-01-25
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History
  • Received：2022-03-30
  • Revised：2022-04-23
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Affiliations
    1.Water Conservancy and Irrigation District Engineering Construction Administration of Xixiayuan Water Conservancy Project, Zhengzhou 450000, China
    2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
    3.Nanjing Hydraulic Research Institute, Nanjing 210029, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20220612
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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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