基于SBAS技术的WLL水库大坝变形监测分析  

Analysis of the WLL Reservoir Dam Deformation Monitoring Based on SBAS Technology

作　　者：王文衡 黄静[1] 崔龙[1] 阿布都沙拉木·托尔逊[2] 马立平 WANG Wen-heng;HUANG Jing;CUI Long;Abdusaramu·Tolson;MA Li-ping(School of Water Conservancy and Civil Engineering,Xinjiang Agricultural University,Urumqi 830000,China;Xinjiang Irtysh River Basin Development Project Construction Administration,Urumqi 830000,China)

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830000 [2]新疆额尔齐斯河流域开发工程建设管理局,新疆乌鲁木齐830000

出　　处：《水电能源科学》2022年第2期119-122,156,共5页Water Resources and Power

基　　金：新疆农业大学水利工程重点学科项目。

摘　　要：为监测WLL水库坝区的变形状况,基于SBAS技术获取2014年10月至2020年10月WLL水库坝区及周边区域的变形信息,利用水准数据对监测结果进行验证。结果表明,水库中坝出现5.7 km的沉降带,沉降带沿雷达视线向的沉降速率在-20~-30 mm/a之间,水库周边工业区发现3个沉降漏斗;最大沉降速率达-52 mm/a。水准点与SBAS累积沉降量的相关系数大于0.9的点占91%,中误差小于20 mm的点占78%。同时可对大坝周边区域进行危险性分级,为大坝安全监测提供数据参考。To monitor the deformation of the WLL reservoir dam area, the deformation information of the WLL reservoir dam area and surrounding areas from October 2014 to October 2020 was obtained based on SBAS technology, and the monitoring results were verified by leveling data. According to the results, it can be seen that there is a 5.7 km subsidence zone in the middle of the dam, and the subsidence rate along the radar direction is between-20--30 mm/a. Three velocity subsidence filters are found in the industrial area around the reservoir;The maximum subsidence rate is-52 mm/a. The characteristic points with correlation coefficient greater than 0.9 between leveling point and SBAS accumulated settlement account for 91%, and the points with mean square error less than 20 mm account for 78%. At the same time, the risk classification of the surrounding area of the dam is carried out to supplement the level monitoring data.

关 键 词：SBAS 大坝 变形监测 精度验证 

分 类 号：TV221.1[水利工程—水工结构工程]