基于有限元法的土石坝除险加固渗流分析

Seepage Analysis of Earth-Rock Dam Reinforcement Based on Finite Element Method

坝体的渗流计算分析是判断土石坝除险加固设计是否合理的主要标准之一,以后山水库工程为例,利用二维渗流有限元法进行渗流计算分析,对比分析大坝除险加固前后的浸润线位置和渗流量,阐述了大坝的除险加固措施。计算结果表明,该水库加固后出逸比降大幅下降,出逸点高程明显降低,满足相关要求,除险加固设计合理,论证了工程的安全可靠性,可供相关类似工程参考借鉴。

The seepage calculation analysis of the dam body is one of the main criteria for judging the rationality of the reinforcement design of earth-rock dams.Taking the Houshan Reservoir Project as an example,the two-dimensional seepage finite element method was used for seepage calculation and analysis.The position of the seepage line and seepage discharge before and after the dam reinforcement were compared and analyzed.The reinforcement measures for the dam were elaborated.The calculation results show that after the reinforcement of the reservoir,the exit gradient is significantly dropped,and the elevation of the exit point is significantly reduced,meeting relevant requirements.The design of hazard removal and reinforcement is reasonable,demonstrating the safety and reliability of the project.The research can provide reference for similar projects.