论文部分内容阅读
由于地质构造作用,在岩石中会有不同软面存在,如果是连续的,会把一定体积的岩石从母岩中割裂出来,引起塌滑,导致不安全甚至带来灾难。其抗滑稳定分析,首先进行四面结构岩体的体积和面积矢量的计算,其次进行结构面组合交线方位角、倾角及结构面视倾角的计算。由两组软弱结构面为潜在滑移面的四面结构岩体,潜在滑移方向必然沿着两组结构面的组合交线进行,组合交线倾角越小对岩体的稳定越有利。设两组潜在滑移面的摩擦系数、凝聚力、面积分别为 f_1、C_1、S_1和 f_2、C_2、S_2,G 为四面体的重量,α为组合交线倾角,则抗滑安全系数 K=(Gcosα(f_1K_1+f_2K_2)+C_1S_1+C_2S_2)/G sinα。
Due to the geological structure, there will be different soft surfaces in the rock. If it is continuous, a certain volume of rock will be separated from the parent rock, causing slump, causing unsafe or even catastrophe. For the stability analysis of anti-sliding, the volume and area vector of the four-sided structure rock mass are firstly calculated, and then the azimuth, dip angle and structural plane-dip angle of the combination of structure plane are calculated. The potential slip direction inevitably follows the combination of two groups of structural planes. The smaller the angle of combination intersection is, the more favorable the stability of the rock mass is from the four-sided structural rock mass with two weak structural planes as potential slip planes. Set the friction coefficient, cohesion, area of the potential sliding surface of the two groups as f_1, C_1, S_1 and f_2, C_2, S_2, G as the weight of the tetrahedron and α as the combined intersection angle, then the safety coefficient K = Gcosα (f_1K_1 + f_2K_2) + C_1S_1 + C_2S_2) / G sinα.