摘要
本文首先论述了粘土矿物颗粒定向排列测定的基本原理并提出粘土矿物定向性定量评价方法,然后根据实例—庙上北滑坡的滑带土粘土矿物的X射线衍射结果,进行定向性定量分析计算,得出滑带土粘土矿物颗粒的定向度为弱到中等定向,并以中等定向为主。因而在水的往返作用下,滑带土具一定的胀缩性及胀缩的不均匀性,再加上粘土矿物本身亦具有的胀缩性及胀缩的可逆性和循环性,故导致滑带土抗剪强度和结构强度不断降低,大大影响斜坡的稳定性。
At first, the basic measured principles for the orientable arrangement of clay minerals is discussed and the methods of the quantitative appraisement for the orientability of clay minerals are given in this paper. And then, According to the result of x-ray diffraction for the clay minerals of the sliding-zone soil of Biaoshangbei Landslide, the orientability of clay minerals had been quantitative analyses and calculation. They show that the clay minerals in the sliding-zone soil are low to moderate orientat...
出处
《水文地质工程地质》
CAS
CSCD
2003年第S1期79-81,共3页
Hydrogeology & Engineering Geology
基金
小浪底库区重点地段库岸稳定性评价
关键词
滑带土
粘土矿物
X射线
定向性
滑坡
sliding-zone soil
clay mineral
x-ray diffraction
orientability
landslide.
