基于D-InSAR监测的库区变形体变形机理及稳定性研究  

D-InSAR technique-based study on deformation mechanism and stability of deformation body in reservoir area

作　　者：姜龙[1] 王玉杰[1] 孙平[1] 林兴超[1] JIANG Long;WANG Yujie;SUN Ping;LIN Xingchao(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,China Institute of Water Resources and Hydropower Research,Beijing 100038,China)

机构地区：[1]中国水利水电科学研究院,流域水循环模拟与调控国家重点实验室,北京100038

出　　处：《水利水电技术（中英文）》2022年第3期155-165,共11页Water Resources and Hydropower Engineering

基　　金：国家重点研发计划(2018YFC0407001);河南省水利科技攻关计划项目(GG202025);水科院专项(SKL2022ZD05)。

摘　　要：合成孔径雷达差分干涉测量(D-InSAR)技术是近年来发展起来的一种区域地表变形遥感监测技术,具有监测范围广、空间分辨率高、测量精度高、全天时、全天候监测等特点。应用D-InSAR监测技术,对阿拉沟水库库区左岸变形的变形破坏机理进行了研究,在此基础上,对变形体的稳定性进行了评价。研究结果表明:(1)D-InSAR技术可用于滑坡变形分析,当SAR影像达到30幅及以上时,数据分析精度可达mm级别,可为库岸滑坡的全域识别、前期变形演化、预测及评价提供一种有效的手段;(2)左岸变形体变形趋势与水位波动较为吻合,整体表现为微变形从上游侧开始逐渐贯通,直至整体变形下沉协调一致,且能够准确判别微变形区域边界;(3)左岸变形体为一牵引式滑坡,库水位波动升降为主要诱因,且整体稳定性较差,需尽早采取相应的加固处理措施。With D-InSAR(Differential Interferometric Synthetic Aperture Radar) technique, the mechanism of the deformation occurred at the left bank of the reservoir area of Alagou Reservoir in Xinjiang is studied herein. On the basis of this, the stability of the deformation body is evaluated. The study result shows that(1) D-InSAR technique can be applied to the analysis of landslide deformation. When the image frames of SAR reach to 30 and more, the precision of the data analysis can reach the level of mm, thus an effective method can be provided for the whole area identification, early deformation evolution, prediction and evaluation of the landslide of reservoir bank;(2) the deformation changing trend is relatively coincided with the water level fluctuation;of which the overall performance is that the micro deformation gradually penetrates from the upstream side until the overall deformation and subsidence are coordinated and the boundary of the micro-deformation area can be correctly identified;(3) the deformation body at the left bank is a tractive landslide with the main inducing cause of fluctuation of reservoir water level;of which the overall stability is poor and then the corresponding reinforcing measures are necessary to be made as earlier as possible.

关 键 词：库区变形体 D-INSAR 变形破坏机理 稳定性 

分 类 号：P642.22[天文地球—工程地质学]