广域岩土体变化监测研究

常规岩土体变化监测方法的局限性造成采用它们来实施大型库区及周边地表形变的持续监测非常困难.为了解决大型水电站库区岩土体的高效实时变化监测这一关键问题,选取乌东德水电站库区为研究区域,根据岩土体变化类型,分别采用D-InSAR技术和假彩色合成技术对库区进行监测,提取出变动区域.最后通过2种方法的监测结果与地面验证结果的比较,验证了变化地点和岩土变动类型与分析结果相一致,达到了发现变化、监视趋势的遥感监测目的.证明了D-InSAR技术和假彩色合成技术相结合用于监测广域岩土体变化的可行性.

Study on monitoring of rock and soil change in a large area

Conventional methods of monitoring change in rock and soil are difficult to be used to implement continuous monitoring of ground deformation in large-size reservoir and its surrounding areas.In order to solve the key problem of monitoring the real-time change in rock and soil in the reservoir area of large scale hydropower station,the reservoir area of Wudongde hydropower station was selected as the study area.According to change types of rock and soil,D-InSAR technique and false color composite technology were used to monitor changes respectively,and changing region was extracted finally.Comparing the results derived from two methods with that of field investigation,the deformation locations of rock and soil as well as its trends are in agreement.It meets the monitoring purpose including discovering change and monitoring trend.It is proved that the combined method of D-InSAR technology and false color composite technology is feasible to monitor the wide-area change in rock and soil.