潜水非完整河附近地下水运动数值模拟

Numerical Simulation of Groundwater Flow near Partial Penetrating River in Phreatic Aquifer

对河流完整性进行了定义,并采用数值模拟的方法考虑河流切割含水层的深度及河床宽度的不同,对非完整河附近的地下水运动进行了模拟,并与解析解进行了比较。结果表明,对于非完整河附近的地下水运动计算采用解析方法存在较大的误差,从而证明数值模拟是处理河流边界问题行之有效的方法。

It is important to study groundwater flow near rivers and canals in assessment of groundwater resources and artificial drainage, irrigation. Rivers are always treated as full penetrating one in analytic method of dynamic of groundwater ,but it is unrealistic. In this paper, the integrity is defined, ant then considering the dissected extent of the river and the width of the riverbed,groundwater flow near partial penetrating river is simulated with numerical method, and the result is compared with that of analytic method. The results show that there is lots of error existing in for the calculation of groundwater flow near partial penetrating river with analytic method, and the availability of numerical simulation to the river boundary problem is proved.