Study on the Seepage Defect at the Connection of the Overflow Dam and the Earth Dam of Banqiao Reservoir

Abstract:

The main dam of Banqiao reservoir consists of the concrete overflow dam and the earth dam in both sides, which are connected by concrete lateral key wall. Field observation shows that serious leakage problems exist at the connection of the overflow dam and the earth dam in right bank. According to the real size of structures, the FEM model are established to calculate and analysis the seepage field characteristics at the connection part. The potential ground water level shows that the reservoir water flowing to the downstream bypassing and passing through the lateral key wall and the anti-seepage curtain. And there exists partial seepage passage at the connection part. As the contact seepage gradient along the lateral key wall is uneven, the contact leakage at the connection part is not fully safe although the average contact seepage gradient is within the permissible range. Effective measures should be taken to solve the seepage defects at the connection part.

• Periodical: Advanced Materials Research (Volume 1028)
• Pages: 287-291
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1028.287
• Online since: September 2014
• Authors: Bai Song Nie, Zhen Zhong Shen
• Keywords: Contact Leakage, Lateral Key Wall, Seepage Defect

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