工程地质学报Issue(4)：760-768,9.DOI:10.13544/j.cnki.jeg.2015.04.026
北川县白什乡老街后山滑坡监测及失稳机制分析
DEFORMATION MONITORING AND FAILURE MECHANISM ANALYSISOF BAISHI LANDSLIDE IN BEICHUAN COUNTY
唐然 1邓韧 2安世泽1
作者信息
- 1. 四川省地质工程勘察院 成都 610072
- 2. 成都理工大学地质灾害防治与地质环境保护国家重点实验室 成都 610059
- 折叠
摘要
Abstract
The Baishi landslide is located at the west of Beichuan county,Mianyang,Sichuan Province.Thelandslide was detected due to fast deformation that caused several small collapses and falls in the front of theunstable slope as well as densely distributed tensile cracks in the slope.In order to better understand the stabilitystatus and estimate the failure time of the unstable slope,a comprehensive monitoring system was carried out afterthe deformation was reported.The monitoring was continued till the slope failed.This study analyzes the landslidedeformation phases and failure mechanism using the monitoring data.The result shows that the failure mode of theBaishi landslide is bendingtensile(toppling).The failure has both the retrogressive and advancing features.Thelandslide is divided into several zones according to the spatial variation of deformation characteristics over the slope.The monitoring results indicate that the front part of the slope(Zone I3)plays a key role in controlling landslidestability.Therefore,the monitoring data of this zone is significantly important for predicting the failure time of thewhole landslide.关键词
白什乡滑坡/监测数据分析/失稳机制/变形演化阶段/预警预报Key words
Baishi landslide/Monitoring data analysis/Failure mechanism/Deformation phase/Early warningand forecast分类
天文与地球科学引用本文复制引用
唐然,邓韧,安世泽..北川县白什乡老街后山滑坡监测及失稳机制分析[J].工程地质学报,2015,(4):760-768,9.
