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川渝地区地壳运动非常活跃,地形陡峭崎岖,地质气象条件复杂,存在许多濒危顺层高陡岩质边坡。本文通过归纳总结顺层高陡边坡的结构特征及破坏模式,结合川渝地区的地质环境特点,针对较为常见的滑移-弯曲破坏(溃屈破坏)模式开展地质力学模型试验研究。基于三维相似理论,研制了高强组合钢结构试验台架、伺服液压加载系统和光栅光纤实时信息监测系统及配套相似材料,揭示了不同滑体厚度及加载条件下顺层高陡边坡的变形和受力特性。由本文研究可知:(1)浅层岩体是承受顺层边坡滑动荷载的主体,应受到密切关注;(2)坡脚的限制作用是该溃曲产生的必要条件,溃曲破坏往往发生于边坡滑体下部坡脚上方。
The crustal movement in Sichuan-Chongqing area is very active, the terrain is steep and rugged, the geological and meteorological conditions are complex, and there are many endangered high-steep rock slopes. In this paper, geomechanical model tests are conducted on the common slip-bending failure (buckling failure) mode by summing up the structural features and failure modes of bedding steep slopes along with the characteristics of geological environment in Sichuan and Chongqing. Based on the three-dimensional similarity theory, real-time information monitoring system of high-strength composite steel structure test rig, servo hydraulic loading system and grating optical fiber are developed, and the deformation of high-steep slope along bedding slip and the similar materials are revealed under different slip thickness and loading conditions Force characteristics. From the study of this paper, we can see that: (1) The shallow rock mass is the main body to bear the sliding load of the bedding slope, and should be paid close attention to. (2) The limitation of slope foot is the necessary condition for the collapse, On the lower part of the slope slippery slope above the foot.