岩溶坝区渗透系数的确定方法探讨

Methods to Decide Permeability Coefficient Under Karst-Engineering Geological Condition

在岩溶地区 ,基于少量试验 ,要求岩体、特别是大范围内岩体的渗透系数是困难的 坝区许多地段的参数是未知的 ,需根据区内实测值参数对未知参数地段进行合理估计 ,并对估值的准确性进行评价 ,并对目前确定渗透系数的各种方法进行了阐述 ,重点分析了岩溶坝区渗透性的特点 ,对岩溶坝区渗透性的空间变异性和渗透系数的随机性进行了描述 。

In karst region, it is very difficult to decide the seepage coefficient about the large range rock mass based on a little trial .Many parameters about seepage area are unknown. It is much necessary to estimate and evaluate the parameters reasonably according to the actual measurement value in the region. In this article,several methods to decide the permeability coefficient have been reviewed. The permeability characteristics under karst-engineering geological condition have been analyzed .The space variability and randomness about the seepage coefficient in karst region have been described. And some ways to constitute the randomicity model of the seepage coefficient have been given.