高坝坝基防渗帷幕结构优化研究Study on Optimization of Anti-Seepage Curtain Structure for High Dam Foundation

DOI: 10.12677/JWRR.2017.66064, PDF, HTML, XML, 下载: 849  浏览: 2,801  国家自然科学基金支持

Abstract: The design of grouting curtain in seepage control measures of the dam foundation of the actual project not only meets the safety, but also meets the economic problems. In this paper, based on the combination of particle swarm optimization and finite element method, the average depth and equivalent thickness of impervious curtain under the constraint condition were calculated for concrete face rock fill dam on deep overburden. Firstly, the seepage field of the dam foundation in the 2D model was analyzed, and the permeability of the dam foundation is relatively high when it has no curtain, and it is easy to produce osmotic rupture. It is therefore necessary to perform grouting in the bedrock to reduce dam foundation seepage. The particle swarm optimization (PSO) is feasible and applicable in the optimization of curtain structures. It is concluded that as the number of iterations increases, the particles are close to the optimal solution, and the objective function (engineering cost) is gradually reduced and tends to be gentle as the number of iterations increases. The research results can be used to provide reference for the structural design of curtain grouting in engineering.

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