三维随机裂隙岩体渗流分析的块体单元法  

Block element method for seepage analysis in three dimensional random fracture network

作　　者：殷德胜[1] 汪卫明[1] 陈胜宏[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072

出　　处：《岩土力学》2009年第8期2535-2539,共5页Rock and Soil Mechanics

基　　金：国家科技支撑计划课题(No.2008BAB29B01);国家自然科学基金资助项目(No.50679066)

摘　　要：岩体中的裂隙分布具有随机性,且渗流主要通过裂隙面进行。运用蒙特卡罗法模拟生成岩体中的随机裂隙面,基于矢体的概念,实现了包括凹块体和多连通体在内的三维随机裂隙岩体的块体单元自动识别。假定岩块不透水、渗流仅通过裂隙面进行,建立了三维随机裂隙岩体渗流分析的块体单元法。通过算例分析,验证了所提方法的准确性和有效性。Fractures in rock masses are randomly distributed; and the seepage in the rock masses mainly happens in these fractures. The Monte Carlo method is adopted to generate the stochastic fracture network firstly. Then, on the base of the theory of directed body, the automatic identification method for three dimensional network with random fractures is realized, including the concave and multi-connected blocks. Next, based on the assumption that the intact rock is impervious and the water flows only along the fractures, the block element method for seepage analysis of three dimensional network with random fractures is established. Finally, two examples are studied to prove the precision and validity of this method.

关 键 词：岩体 随机 裂隙 渗流 块体单元法 

分 类 号：TU454[建筑科学—岩土工程]