东沟尾矿坝渗透系数反演分析

Inversion analysis of seepage parameters for Donggou tailing filling dam

尾矿坝运行中排水能力分析、渗流分析至关重要,直接关系着工程安全和效益以及下游人民生命财产安全。而渗流分析中渗透系数准确性直接关系到渗流分析的准确性。渗透系数有些通过实验获得,但与现场参数有较大的误差。采用三维有限元,使用"反问题正算法",通过东沟尾矿坝实测的水头数据对渗透系数进行反演分析,反演分析获得的渗透系数综合考虑了工程现场条件,此渗透系数可为该尾矿坝的安全运行和加高分析提供基础。

Seepage and drainage capacity analysis is very important during the operation term of tailing filling dam, which has direct relations to the economic benefits and the safety of people living along the downstream of the engineering. The seepage parameters have the direct relation to the accuracy of the seepage analysis for tailing filling dam. The parameters could be gotten from experiments, but the parameters are of error by contrasting to the field parameters. The elementary principle of the application of FEM in the inversion analysis for seepage parameters is proposed, and the inversion analysis for Donggou tailing filling dam by using the practical water head is done. The seepage parameters gotten with this method consider the practical integrate environment influence, and the inversion analysis could afford the basic data which would be used in the analysis for the operation and the raising engineering of the dam in the future.