关键词: 斜坡地表形变;地质灾害;InSAR监测;野外调查;滇西北地区; DOI：

Abstract: InSAR technology has been widely used in the geohazards study because of its advantages in surface deformation monitoring. However, due to the limitation of climate conditions, dense vegetation and excessive mountainous terrain fluctuation, the application scope and effect of geological disaster InSAR deformation monitoring are still somewhat limited. In order to effectively evaluate the application effect of InSAR deformation monitoring in a certain area, it is necessary to establish a more systematic field investigation and judgment standard, so as to quickly carry out field investigation and evaluation of InSAR deformation monitoring results in batches. This paper summarized the field investigation contents from deformation characteristics of slope surface and geohazards-generating geological environment conditions, and established a set of standard methods for evaluating the effect of slope deformation monitoring by InSAR. A typical example in Northwestern Yunnan was selected to illustrate the specific application process of this method. The results showed that: ① The field determination included two aspects, i.e., the slope surface deformation characteristics and the geohazards-generating geological environment conditions. The slope surface deformation characteristics were the core of field determination, and the geohazards-generating geological environment conditions were the basic conditions for the development of geological disasters. ② The method can quickly identify the deformation characteristics of the slope surface in Northwestern Yunnan based on naked eye observation and simple measurements. The application effect is relatively satisfactory, and this method is suitable for the rapid and massive evaluation of InSAR deformation monitoring effect of slopes.

Key words: InSAR monitoring; geological hazard; slope surface deformation; field investigation; Northwestern Yunnan