中文摘要：

采用不确定性理论建立的三维节理网络模拟技术是计算机技术在岩体力学领域应尉的一个重要方面。该技术利用野外不连续面现场地质调查所获得的原始数据，建立结构面几何参数分布的概率统计模型，进而应用蒙特卡罗模拟方法构筑不连续面在三维空间的组合形态，借助计算机生成三维网络模型。在建立三维网络模型的基础上，通过搜索不连续面和岩桥组合破坏的临界路径来确定连通率并提供三维综合抗剪强度指标，在搜索过程中应用了具有鲜明生物背景的遗传算法。

英文摘要：

Applying stochastic theory to establish a 3D probability distribution model of discontinuities network is an important research subject of utilizing the computer programming technique in the field of rock mechanics. This technique obtains the original data of discontinuities from the in-situ investigation by sampling window method and creates a probability statistics distribution model of discontinuities geometric parameter; then, Monte Carlo method is adopted to build up a 3D discontinuities network model; finally, 3D discontinuities network model is obtained with the help of computer. Based on the 3D discontinuities network model, the persistence is determined and the 3D shear strength indexes are provided by searching for the critical path of combined failure of the discontinuities and rock bridge. During the process of search, genetic algorithm which has obvious biological background is applied.