摘要
根据小浪底库区庙上北滑坡滑带土粘土矿物的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。
According to the result of x-ray diffraction for the clay minerals in the sliding-zone soil of Miaoshangbei Landslide, the orientability of clay minerals had been quantitatively analysed.It showed that the clay minerals in the sliding-zone soil were of low to moderate orientation (mainly moderate orientation).The expansibility and shrinkage,inhomogeneity of expansion and shrinkage under the effects of water,as well as reversibility and circulation of expansion and shrinkage of sliding-zone soil reduced the shear strength and structural stability of sliding-zone soil and caused landslide.
出处
《矿物岩石》
CAS
CSCD
北大核心
2004年第2期26-29,共4页
Mineralogy and Petrology
关键词
小浪底水库
滑坡
粘土矿
X射线
定向性
sliding-zone soil
clay mineral
X-ray diffraction
orientability
landslide
