基于SBAS-InSAR技术的高寒矿区地表形变监测与时空分析

Monitoring and Spatio-temporal Analysis of Surface Deformation in Alpine Mining Area based on SBAS-InSAR Technology

深埋地下的矿产资源的开采,往往会造成地表原始地层的扰动和破坏,不仅会破坏土地资源,还会诱发地表的沉降和塌陷等地质灾害以及一系列的次生灾害,导致生态环境恶化诱发一系列的社会、经济、环境问题。其中高寒矿区生态脆弱,一经破坏,治理尤为困难。故以木里矿区为例,以该地区2017年10月至2021年2月的Sentinle-1A数据作为数据源,应用小基线集技术进行地表形变监测,并对其检测成果进行采样分析,形成时间序列地表形变速率图和累积形变量,通过对沉降数据对比分析,甄别出形变异常的区域,其成果可为防控地面沉降及其灾害链的发生与发展提供基础支持。

Deep underground mining of mineral resources,often cause the disturbance and destruction of the original surface strata,not only will destroy land resources,but also induce surface subsidence and collapse and other geological disasters and a series of secondary disasters,leading to the ecological environment,deterioration induced a series of social,economic,environmental problems.The Sentinel-1A data of Muli Mining area from October 2017 to February 2021 are used as the data source,and the small baseline set technology is used to monitor the surface deformation in this area,and the monitoring results are sampled to form the time series surface deformation rate map and cumulative shape variables.Through the comparative analysis of the subsidence data,The abnormal deformation areas are identified,and the results can provide basic support for the prevention and control of land subsidence and the occurrence and development of disaster chain.