基于溶蚀岩体随机结构模型的等效渗透系数概念及其应用

THE EQUIVALENT PERMEABILITY COEFFICIENT AND IT'S APPLICATIONS BASED ON THE STOCHASTIC STRUCTURE MODEL OF KARSTIC ROCK

摘要: 针对具有随机分布特征的裂隙和中小规模溶蚀洞穴造成的溶蚀岩体渗漏问题,本文在建立溶蚀岩体随机结构模型的基础上,提出等效渗透系数的概念,并推导出等效渗透系数的计算公式。结合具体的工程实例,根据随机结构模型所反映出的裂隙和溶蚀洞穴的有关参数计算等效渗透系数,多次模拟后得到其分布规律。最后对该方法的应用前景进行了讨论。

Abstract: Based on the stochastic structure model of karstic rock established with the date from the on-the-spot measurement, the concept of equivalent permeability coefficient is described in details. The distributing rule of leakage can be got by repeating calculation several times. At last, an example is offered to explain the usage of the method in actual engineering.