【摘要】 从理论上证明了节理岩体内有限大小的结构面实质上是呈三维分布的,岩体出露面上结构面出露迹线的分布一般不能代表三维岩体中结构面的分面特征。因此,实际应用中将涉及三维岩体有限大小结构面的问题简化为二维问题时会引起较大的误差。通过两个算例对比分析了应用Monte Carlo法和遗传算法计算得出的二维和三维连通率,算例分析的计算结果与理论分析相符。更多还原

【Abstract】 It is first confirmed in theory that two dimensional distribution of Joint trace revealed in an outcrop plane (2D) or in a hole (1D) does not represent three dimensional (3D) distribution of discontinuity with limited size in real rock masses. So a real three dimensional problem of rock masses containing discontimuities with limited size should not be simplified to a two dimensional problem. The contrasts between 2D persistence ration and 3D persistence ratio of calculation results of two exaples are in a good accordance with the results of theoretical analysis.更多还原