联合北斗与地基InSAR多源数据分析四川茂县特大滑坡

Combined BeiDou and ground-based InSAR multi-source data analysis of maoxian landslide in Sichuan province

本文以四川茂县渭门镇滑坡为典型案例,采用裂缝计、雨量计设备监测识别出该滑坡存在激烈下滑现象。结合北斗区域网获取实时监测数据,利用地基InSAR长达119.5 h的连续监测,获取滑坡体表面完整形变信息,识别出滑坡明显形变区域。北斗和地基InSAR监测结果表明,两种设备监测形变量和形变速度基本一致。联合北斗和地基InSAR进行监测,能充分发挥两者的优势,在滑坡形变的不同阶段,从不同位置分析滑坡表面形变信息,对于滑坡的早期防范和局部实时监测有重大意义。

Based on the typical case of Weimen town landslide in Maoxian county,Sichuan province,this paper uses crack meter and rain gauge equipment to monitor and identify the phenomenon of landslide severe sliding.The BeiDou regional network is set up to obtain real-time monitoring data.The 119.5 h continuous monitoring of the GBInSAR is used to obtain the complete deformation information of the landslide surface,and obvious deformation in the landslide is analyzed.Comparing BeiDou and GBInSAR monitoring at the same position,the results show that the deformation and velocities monitored by the two devices are basically the same.Monitoring by combining BeiDou and GBInSAR can give full play to the advantages of the two means,and analyze the landslide surface deformation information from different positions,which is of great significance for early prevention and local real-time monitoring of landslides.