地下水数值模拟中的参数随机模拟

从水文地质参数的随机性出发,以滦河某拟建水源地为例,采用地下水数值模拟软件GMS建立了参数随机模拟的数值模型,并求得模型的随机解,计算出模型的水位均值流场和水位标准差分布.结果表明:在模拟非均质含水层二维流动问题中,充分考虑渗透系数和给水度的随机特性的蒙特卡罗法预测结果可靠,比确定性方法更加科学、有效.

Stochastic parameter simulation in numerical simulation of groundwater

In consideration of the stochastic property of hydrogeological parameters,the groundwater numerical simulation software GMS was adopted to develop a numerical model for stochastic parameter simulation of the water source site to be built near the Luanhe River.The stochastic solution to the model was obtained,and the flow field of average water table and distribution of its standard deviation were calculated.The calculated results show that the Monte-Carlo method,which takes the stochastic property of permeability coefficient and specific yield into full consideration,is superior to the determinate method.