云南水麻高速公路岩堆体边坡结构特征研究

云南水麻高速公路沿线赋存大量的岩堆体,在施工过程中常常发生岩堆体滑坡,造成了巨大的损失.通过现场调研,提出了采用坡面角度、坡面形状和坡体厚度等研究岩堆的外部结构,采用土石混合比和块石尺度分布研究岩堆的内部结构,从而实现岩堆体结构特征的几何特征描述指标方法,为建立岩堆体力学参数与结构特征的定量关系奠定了基础.

Study on the Structure Characteristics of Talus Slope at Shuima Motorway in Yunnan Province

On the site of Shui-ma motorway,there is a large number of talus.The talus was composed of soil, debris and rock fragments.In general,the talus is in limited balance.It will slide and destroy the work when dis- turbed by outside factors.The loss from the talus slide is always quite large.Based on the in-situ investigation,a systematic research frame for talus structure characteristics was put forward.The structure of talus was divided into outside structure and inside structure.The outside features can be described with slope angle,slope profile and its thickness,etc.the inside features can be indexed with soil rock ratio and the distribution of rock dimension.These indexes represent the geometry characteristics of talus and can be got easily.The results supply a new method to study the quantitative relationship between the behavior and structure of talus.