Study on Road Network Vulnerability Considering the Risk of Landslide Geological Disasters in China’s Tibet

Road traffic is occasionally blocked by landslide geological disasters in remote mountainous areas, causing obstruction to economic society and national defense construction. It vital conduct disaster risk assessment vulnerability research on the road network. Based network, this study analyzed potential effects of main environmental elements. Due lack previous works, proposed an effective, rational, understandable multicriteria heuristic analytical hierarchy process model, fuzzy comprehensive evaluation, frequency ratio-interactive stack analysis for networks large complex networks. use geographic information technology, network Tibet China was evaluated introducing slope, topographic relief, normalized difference vegetation index (NDVI), annual mean precipitation, distance from river drainage, glaciers snow, habitation, seismic center fault zone, soil erosion intensity. According findings study, three-stage framework can provide correct inferences explanations phenomena disasters; are unevenly distributed area; distribution China’s significantly differs among different cities; high-vulnerability section presents significant regional characteristics, which overlap with area a high disasters, its mostly located arteries, link aggregations, relatively frequent human activity.