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本文针对坝址区渗流场模拟结果的可靠性问题 ,简要介绍了渗流随机模拟方法 ,以拉西瓦坝址区为例 ,采用条件模拟的顺序指示模拟方法 ,对岩体渗透系数作了大量模拟 ,建立了描述三维渗流场的数值模拟模型 ,进行了渗流场的 1 0 0次模拟 ,并进一步对渗流模拟的结果作了统计分析 .结果表明 ,渗透系数的条件模拟很好地表征了坝址区岩体渗透性特征 ,渗流随机模拟可定量分析模拟结果的可靠性 ,可为重大工程设计提供切实可行的依据 .
In this paper, aiming at the reliability of simulation results of seepage field in dam site, a stochastic simulation method for seepage flow is briefly introduced. Taking Laxiwa dam site as an example, a lot of simulation is made on the permeability coefficient of rock mass using the sequential indication simulation method of conditional simulation , A numerical simulation model describing three-dimensional seepage field was set up and the simulation of the seepage field was performed and the results of the seepage simulation were further analyzed. The results show that the conditions of the permeability coefficient well characterize the dam site The rock mass permeability characteristics and seepage stochastic simulation can quantitatively analyze the reliability of the simulation results and provide a feasible basis for major engineering design.