摘要
文章以丹巴沙坝子危岩为例,阐述了三维激光扫描技术在危岩体监测中的应用方法,并针对溜滑和掉块两种不同的破坏模式,提出了新的监测思路:(1)根据三维影像直接量化溜滑规模及厚度,并结合降雨分析溜滑变形与累计降水量关系;(2)从统计学角度分析危岩掉落规律及分布特征,对危险性区域做出预测。
High risk dangerous rocks occur widely in alpine gorge region,specifically in seismic disastrous area. The regular deformation monitoring aims at the dangerous rocks which have already deformed or have deformation evidence,and detects the spot displacement. It cannot early warn the risk of unknown rock and cannot catch the rock mass holistic deformation characteristics. With the help of three-dimensional laser scanning technology,the non-contact surveying can quickly get high precision dense slope entity spot cloud data from different period. This paper takes the Shaziba dangerous rock as an example and explains the technical application on dangerous rock. A new idea of detection aiming at slump and rockfall for these two different failure mode is put forward：（ 1） quantification of the slump scale and thickness by 3D image in combination of the rainfall to get the relationship between the slump deformation and accumulated rainfall,（ 2） statistical analysis of the rockfall scale and distribution to make prediction to dangerous region.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2016年第1期124-129,142,共7页
Hydrogeology & Engineering Geology
基金
国家自然科学基金项目资助(41302240)
关键词
三维激光扫描
危岩
监测
溜滑
掉块
three-dimensional laser scanning technology
unstable-rock
monitoring
slump
rockfall
