基于SBAS-InSAR技术的高山峡谷区滑坡隐患早期识别
Early identification of potential landslides in alpine and canyon area based on SBAS-InSAR technology
陈宏 1江峻毅 2纪成亮 2张伟 2杨庆义 2孙旭 2席文勇 2张勇 2刘玉洁 3李德营3
作者信息
- 1. 国家电力投资集团有限公司安环部,北京 100029
- 2. 山东电力工程咨询院有限公司勘测事业部,山东 济南 250100
- 3. 中国地质大学(武汉)工程学院,湖北 武汉 430074
- 折叠
摘要
近年来,高山峡谷区滑坡灾害频发,给人民生命和财产安全带来了严重威胁.滑坡隐患早期识别是高山峡谷区滑坡研究的重点和难点问题之一.以牛栏江中下游河段的象鼻岭水库区域为研究区,基于SBAS-InSAR技术,在分析地形可视性的基础上,通过Sentinel-1A升、降轨数据结合互补的方式,对该区域的滑坡隐患进行早期识别研究.结果表明:升、降轨数据结合有效减小了阴影叠掩区的干扰,能够较全面地识别出高山峡谷区的滑坡隐患点;研究区内雷达视线方向的年平均形变速率为-186～166 mm/a,基于形变结果识别出47个滑坡隐患点;高程在1 400～＜1 600 m、坡度在30°～＜40°、坡向在东北和正南方向为滑坡发育的有利地形,大部分滑坡分布在石炭系下统岩关组地层中.研究成果证明了基于SBAS-InSAR技术采用升、降轨数据结合互补方式在高山峡谷区滑坡隐患早期识别中的优势及有效性,具有推广应用的潜力.
Abstract
In recent years,landslides occur frequently in alpine and canyon area,posing a serious threat to people's life and property safety.Early identification of landslide hazard is one of the key and difficult problems in landslide research in alpine and canyon area.Taking Xiangbiling reservoir area in the middle and lower reaches of Niulan River as the research area,based on the SBAS-InSAR technology,on the basis of the terrain visibility analysis,Sentinel-1A data analysis results of lifting and descending rails combined with the complementary method,the early identification of potential landslide hazards was conducted.The results show that the combination of the ascending and descending orbit data can effectively reduce the in-terference of shadow overlay area,and can identify the hidden landslide points in the alpine and canyon area more comprehensively.The average annual deformation rate of radar line of sight direction in the study area is-186～166 mm/a,and 47 hidden landslide points are identified based on the deformation results.It is found that the elevation of 1 400～＜1 600 m,slope of 30°～＜40° and slope direction in the northeast and due south are favorable landforms for landslide development.Most landslides are distributed in the Lower Carboniferous Yanguan Formation.The research results prove the advantages and effectiveness of the com-bination of ascending and descending orbit data and complementary method based on SBAS-InSAR techno-logy in the early identification of landslide hazards in alpine and canyon area,and have the potential to be popularized and applied.
关键词
滑坡隐患早期识别/高山峡谷区/SARS-InSAR技术/地形可视性Key words
early identification of potential landslide/alpine and canyon area/SBAS-InSAR technology/ter-rain visibility引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据