摘要
笔者在对"8.12"山阳滑坡分离界面特征、滑坡结构特征与剪出口特征分析的基础上,通过与重庆武隆鸡尾山滑坡成因机理的对比分析,从滑坡的陡倾层状斜向结构、滑坡体倾向阻挡、视向临空条件、驱动块体下滑以及前部相对稳定块体阻滑等5个方面总结了山阳滑坡产生视向滑动的成因机理。在此基础上,结合山阳滑坡视向滑动剪出后的高速远程运动特征与滑体结构分布特征,将滑坡的整个运动过程划分为视向剪切滑动区、整体滑动堆积区、碰撞折返堆积区以及前部碎屑抛洒区。
Based on analyzing the characteristics of separating planes,structure of sliding rockmass and shear outlet,and compared with the Jiweishan landslide in Wulong,Chongqing,the formation mechanism of apparent dip slide in the Shanyang ＂8.12＂landslide has been studied from five aspects,including steep stratified oblique rock,inclined stable rockmass barrier,free surface of apparent dip slip exiting,driving-rockmass sliding and relative stable rockmass resisting.According to the rapid long runout movement characteristics and the distribution characteristics of landslide mass,the motion process of this landslide can be divided into four zones,such as apparent dip shear slide zone,main slide accumulation zone,collision and retracing accumulation zone and fragment scattering zone.
作者
王佳运
石小亚
武立
郑定国
WANG Jiayun1,2,SHI Xiaoya2,WU Li1,ZHENG Dingguo1(1. School of Geology Engineering and Geomatics, Chang＇an University, Xi＇an 710054, Shaanxi, China; 2. Xi＇an Center of Geological Survey, CGS, Xi＇an 710054, Shaanxi, China)
出处
《西北地质》
CAS
CSCD
北大核心
2018年第3期232-239,共8页
Northwestern Geology
基金
中国地质调查局项目"吕梁山区城镇地质灾害调查"(121201011000150018)资助
关键词
“8.12”山阳滑坡
陡倾斜向结构
成因机理
运动特征
Shanyang ＂8.12＂ landslide
steep stratified oblique rock
formation mechanism
movement characteristic
