岩体边坡滑裂面随机搜索机理与工程应用——以黄河小浪底水库进口高边坡泻洪、发电、引水建筑物进口高边坡为例

本文运用随机搜索和破坏概率相结合的技术方法 ,以黄河小浪底水库进口高边坡引水建筑物咽喉工程为例 ,进行了滑动面的随机搜索和边坡的破坏概率分析 ,给出了不同条件下最危险滑面的最低位置和倾角以及边坡破坏概率最大时的荷载组合形式 ,指出 1:0 .2的台阶坡设计优于直立坡的设计。同时 ,为边坡加固的锚固长度和范围的确定提供了合理依据。

MECHANISM OF RANDOM SEARCH FOR THE SURFACE PRONE TO SLIDE OF ROCK MASS AND ITS APPLICATION TO A PROJECT

Due to the random distribution of geotechnical data and the sliding surface, it is more significant to evaluate slope stability and to design a slope by random searching technique and failure probability method. In the paper, the lowest position of the most dangerous sliding surface and its dIp angle, as well as the load combination reflecting the maximum failure probability of the entrance high slope of Xiaolangdi Reservoir, Yellow River, China, are given by random searching technique and probability method. At the end of the paper, the author points out that design of a step slope with 1:0.2 gradient has an advantage over that of the vertical one. The results could also be provided as a scientific basis for determination of depth and width of slope reinforcement .