Development law of geological hazard potential sites in Liaoning Province

In order to study the development law of geological hazard potential sites in Liaoning Province and provide decision support for disaster prevention and mitigation, the authors in this paper used results of 1∶50 000 geological hazard risk survey project, ALOS satellite DEM data, regional geological data of Liaoning Province and ArcGIS software to conduct research by kernel density analysis, neighborhood analysis, slope analysis, aspect analysis, mountain shadow, raster reclassification and other methods. The results show that geological hazard potential sites are mostly developed in the low mountainous and hilly areas in the northwestern Liaoning and the mountainous areas in the eastern and southern Liaoning. Dalian is the city with the largest number of geological hazard potential sites, and Anshan is the city with the highest density of geological hazard potential sites. The landslide potential sites are mostly located in areas with strong terrain cutting and steep slopes. And the collapse potential sites are mainly controlled by granite, metamorphic rock and clastic rock, and mostly occur in steep cliffs with a slope greater than 60 degrees. The debris flow potential sites are mainly developed in granite, mixed granite and gneiss within 2.5 km from both sides of the fault. Ground subsidence and ground fissures are primarily caused by mining activities, and they are mainly distributed in the Quaternary strata, clastic rocks, and carbonate rocks. This research could further reveal the distribution patterns of geological disasters in Liaoning Province, and deepen the scientific understanding of geological disasters, which could provide data support and scientific references for the prediction, assessment, prevention and mitigation of geological disasters.