Safe and short seismic evacuation route is an basic guarantee for improving the level of urban resilience governance in the new era. Earthquake evacuation routes during disasters could reduce urban casualties and provide options of emergency evacuation for urban residents. Dongchuan District in Kunming, a small mountainous city, is affected by the Xiaojiang earthquake fault zone, resulting in frequent earthquake disasters, and the urban earthquake fortification intensity is as high as 9 degrees. In this paper, the influencing factors of post-disaster seismic evacuation routes in Dongchuan urban area were systematically analyzed, and the traffic capacity of evacuation routes were evaluated. The relationship between population concentration point and seismic shelter for evacuation was established based on ArcGIS. Then, the selection of multiple seismic evacuation routes was studied with the genetic algorithm. The results showed that many rural internal roads around the city and old urban roads in Dongchuan urban area do not meet the post-earthquake evacuation requirements. There are some service blind spots in the seismic shelters for evacuation, and some communities are lack of evacuation routes to connect with the seismic shelter for evacuation. Some selected paths which meet the evacuation requirements will take a long time. In case of disaster, the shortest path shall be given priority.
马程伟,王培茗,张堃.山地小城市避震疏散通道通行能力评估及选择研究——以昆明东川城区为例[J].地震工程学报,2021,43(5):1112-1122. MA Chengwei, WANG Peiming, ZHANG Kun. Traffic capacity assessment and selection of earthquakeevacuation routes in small mountainous cities: a case study of Dongchuan urban area[J]. China Earthquake Engineering Journal,2021,43(5):1112-1122.复制