一种基于稳定性评价的岩质边坡坡体结构分类方法

对目前岩质边坡勘测研究中所使用的结构术语及概念进行了梳理和厘定,提出了基于边坡稳定性评价的坡体结构的概念; 结合我国近年来水电工程岩质边坡勘测实践,以边坡主控结构面和潜在变形失稳模式为核心,总结提出了坡体结构类型划分体系,即将岩质边坡划分为层状坡体结构、中陡裂隙(面)控制坡体结构、楔形坡体结构和均质坡体结构四个大类九个亚类。该坡体结构概念及其分类体系对于复杂岩质边坡稳定性的定性评价、计算方法选择、边界条件确定以及稳定控制方案的制定具有指导意义。

STABILITY EVALUATION BASED CLASSIFICATION METHOD FOR ROCK MASS STRUCTURES IN ROCK SLOPE

This paper summarizes and defiene the structure technology terms and concepts.They are used for investigations and study of rocky slopes at present. The notion of slope mass based on the stability evaluation of slope is put forward. Then, a classification system of slope mass structure was summarized and put forward. This system is based the rocky slope investigations in the field of Chinese hydropower project in recent years. It includes the controlling structural plane and potential deformation and instability model. With this system, rocky slopes could be divided into four main types and nine subtypes. The four main types include bedded slope mass structure, middle-steep joints (or joints surfaces) controlling slope mass structure, wedge-shaped slope mass structure, and homogeneous slope mass structure. This kind of slope mass structure notion and classification system has directive significance to qualitative evaluation for the stability of complex rocky slope, the selection of calculation method, the determination of boundary condition, and the establishment of scheme controlling stability.