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( Zhihua Yang ),( Xiaoyi Liu ),( Changbao Guo ) 대한지질공학회 2019 대한지질공학회 학술발표회논문집 Vol.2019 No.2
The Xianshuihe Fault in the southwest China presents strong activities Since the Holocene. Under the joint action of strong earthquakes, fault activities and heavy rainfall, the landslides have shown high development intensity in the Xianshuihe fault zone and bring a serious threat to the safety of human life and property. In this study, the SBAS-InSAR method and ALOS PALSAR data (15 scenes) are used to calculate and analyze the deformation characteristics of the creeping landslide between 2007 and 2011. The results show that the active effect of the Xianshuihe Fault has an important influence on the landslide development and occurrence. The closer distance to the Xianshuihe Fault is, the more stable coherent points is, the greater landslide cumulative displacement is. A total of 98 creeping landslides in the Xianshuihe Fault zone are identified, which develop as a linear distribution on both sides of the Xianshuihe Fault. And, the surface deformation and development characteristics of several typical creeping landslides are analyzed in-depth. So, the InSAR method can be used to effectively analyze the slow surface deformation, change laws and development characteristics of creeping landslide in the active fault zone. The study results have a certain guiding role on the landslide prevention and mitigation along the Xianshuihe Fault zone and the similar tectonic activity area.
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