Application of high resolution remote sensing technology in geological disaster investigation and disaster law analysis: A case study of Panxi Miyi area

Panxi area, with high mountains, deep valleys and strong topographic cutting, has always been a serious disaster area and prone area of geological disasters. In order to find out the background of geological disasters, the distribution and development law of geological disasters, and the possible hidden dangers of geological disasters, and support the on-site verification and engineering prevention of disasters, the researchers in this paper used 2019 high-resolution remote sensing technology (hereinafter referred to as high-resolution remote sensing technology) to carry out the remote sensing survey and on-site verification of geological disasters in Miyi area of Panxi in Sichuan Province. A total of 106 hidden points of geological disasters with obvious threat objects were determined, dominating by collapse landslide disaster and following by debris flow disaster. The analysis of the disaster law of hidden danger points is carried out, combining with the survey results. The results show that the geological disasters are mainly developed along the Anning River and its tributaries, and they are distributed in bands along provincial highway 214, Mipu Road, Manan road and Ertan Reservoir area. 51 geological disasters are distributed within 500 m on both sides of the fault, accounting for 35.8% of the total number of hidden danger points investigated by remote sensing. 104 disasters occurred from May to September in 2019, accounting for 98.11% of the total number of geological disasters in the whole year. The development degree of geological disasters in the northwestern and central northern region is relatively low. The application results show that the application of remote sensing technology is beneficial for the ascertaining distribution and law of geological disasters, and is of great significance for the disaster prevention and reductions at the grass-roots level, disaster damage reduction, and improvement of disaster technology and disaster prevention.