摘要
介绍了基于网络模拟的岩体边坡潜在滑动面随机搜索及其破坏概率计算的基本原理和实现过程。首先通过统计分析得到岩体边坡结构的统计性质参数及分布的密度函数,应用蒙特卡洛方法,采用随机参数模拟生成边坡岩体的结构面网络模型;然后以结构面网络模型为基础,在研究岩体边坡断裂失稳问题中,结合优势面理论,并考虑岩桥破坏机理,建立了新的使用动态规划方法寻求潜在滑动面及破坏概率计算的随机模拟技术,完成了相应计算程序。
Random searching techniques for the localization of potential failure surfaces in rock slope based on network simulation and failure probability analysis are presented. Discontinuities in the rock slope were measured by the line sampling method, and orientation and trace length of the discontinuities were corrected and Mote-Carlo simulated, thus the discontinuities＇network model has been established. Then, based on the model, during research on the failure of rock slope, combining the prevailing discontinuities theory, and according to the rock-bridge failure mechanics, a stochastic simulation technique for search of potential failure surfaces by dynamic programming and calculating failure probability has been established. Calculation procedure is finished.
出处
《地球与环境》
CAS
CSCD
北大核心
2005年第3期95-100,共6页
Earth and Environment
关键词
岩体边坡
滑动面
随机模拟
破坏概率
优势面
rock slope
sliding surface
stochastic simulation
failure probability~ prevailing discontinuity
