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Study on Concentrated Seepage of Face Rockfill Dam After Vertical Joint Failure
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Bei QIAO1, De-jun JIANG2, Yu-lan LIU2
Water Resources and Power | 2023, 41(4) : 123 - 126
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Water Resources and Power | 2023, 41(4): 123-126
• DAM SAFETY AND MONITORING •
Study on Concentrated Seepage of Face Rockfill Dam After Vertical Joint Failure
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Bei QIAO1, De-jun JIANG2, Yu-lan LIU2
Affiliations
  • 1.Laboratory and Equipment Management Department, Chengdu University, Chengdu 610106, China
  • 2.Dadu River Basin Hydropower Development Co., Ltd., Chengdu 610000, China
Published: 2023-04-25 doi: 10.20040/j.cnki.1000-7709.2023.20221148
Outline
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The structural joints of face rockfill dam are the most important part and the weakest link of the seepage control system of dams. Taking a face rockfill dam as an example, the position, width, length of vertical failure joints and permeability coefficient of cushion area were simulated by finite element method. And then the seepage field law and permeability stability after water stop failure were studied. The results show that in the case of single fracture failure, the position, width, length of fracture and permeability coefficient of cushion are positively correlated with control factors of seepage flow, and the length of vertical fracture and permeability coefficient of cushion are the most significant. When multiple joints fail simultaneously, the seepage flow at cracked panel can be calculated by summing the failure results of single joints, and the results are safety. At the same time, it is suggested that the permeability coefficient of cushion should be 1×10-5m/s or slightly smaller. The results can provide reference for the design and construction of similar projects.

face rockfill dam  /  vertical joint failure  /  cracks  /  finite element  /  permeability stability
Bei QIAO, De-jun JIANG, Yu-lan LIU. Study on Concentrated Seepage of Face Rockfill Dam After Vertical Joint Failure[J]. Water Resources and Power, 2023 , 41 (4) : 123 -126 . DOI: 10.20040/j.cnki.1000-7709.2023.20221148
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Year 2023 volume 41 Issue 4
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221148
  • Receive Date：2022-05-30
  • Online Date：2026-01-27
  • Published：2023-04-25
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History
  • Received：2022-05-30
  • Revised：2022-07-08
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Affiliations
    1.Laboratory and Equipment Management Department, Chengdu University, Chengdu 610106, China
    2.Dadu River Basin Hydropower Development Co., Ltd., Chengdu 610000, China
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Citations
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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