运用蒙特卡罗法模拟生成随机的结构面，在三维岩石块体系统自动识别方法的基础上，充分比较有限结构面和无限结构面相互切割成块体的异同，并结合基本的拓扑学原理，实现了三维岩石随机裂隙网络块体的自动识别，并有效地解决了多连通问题。算例表明了该方法的可靠性。

The Monte Carlo method is adopted to generate the stochastic fracture network. On the basis of automatic identification method for three dimensional multi-block system and the basal principle of topology, the homogeneities and differences forming a block system cut by limited and infinite structural planes are compared. Then the automatic identification method for three dimensional network of random discontinuities is brought forward, and the results proved by the examples show that the method is reliable.