Safety Study on Anti-Seepage Structure of High Face Rockfill Dam on Deep Overburden
The anti-seepage of dam foundation is one of the key technical problems affecting the construction of high concrete face rockfill dams on ultra-deep overburden.Based on the Hohai unified generalized plastic model and parameters,the three-dimensional finite element method is used to calculate the elastic-plastic stress and deformation of the anti-seepage scheme of the concrete cutoff wall-connecting plate-toe plate of the dam foundation by taking a face rockfill dam with a height of 165 m built on a 93 m deep overburden as an example.The calculation results are compared with the field measurement results.The results show that the deformation and stress of the dam anti-seepage structure are within the safe range,and the design scheme of the anti-seepage structure is feasible;The calculated values are basically consistent with the measured values,and the values are in good agreement,indicating that the calculation and prediction accuracy of the dam is high.The research results can provide reference for the design and construction of similar concrete face rockfill dams.
face rockfill damdeep overburdencutoff structurethree-dimensional finite elementdeformationstress
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