
Research on Location Layout Planning of Temporary Shelter in Landslide Disaster
GUO Haixiang, ZHAO Jiajia, LI Jinling
Journal of Systems Science and Mathematical Sciences ›› 2021, Vol. 41 ›› Issue (2) : 401-419.
Research on Location Layout Planning of Temporary Shelter in Landslide Disaster
The rapid and orderly evacuation of residents in dangerous areas to temporary shelters before disasters can greatly reduce the loss of life and property. In order to establish a set of scientific temporary shelter location planning scheme, this paper combines the actual situation of landslide disaster in mountainous area to establish temporary shelter. Based on the site selection principles of safety, tolerance and accessibility, a multi-objective planning model based on the site selection layout of landslide disaster shelters is established, taking into account the goals of minimizing the number of shelters, minimizing the dispersion of personnel allocation and minimizing the total evacuation distance under the complete coverage of the disaster site. NSGA-II algorithm is used to solve the multi-objective location selection model to obtain the Pareto optimal solution set. The acceptability analysis of random multi-criteria is used to select the most reasonable scheme from multiple schemes to make the proportion of three targets the most balanced. Taking Zigui County in the Three Gorges Reservoir area with serious landslide hazards as an example, the landslide points with different risk levels and different volumes are selected for study, and the target preferences of the final results are compared to verify the effectiveness of the method.The study shows that in general, the number of shelters is given priority in the selection of temporary shelters, the distance between shelters and the disaster site is the second consideration, and the dispersion level of the shelter accommodation rate is the last consideration. The method of ``Multi-objective site selection and layout model-NSGA-II algorithm-SMAA2" adopted by the research institute provides a set of scientific and complete, targeted and operable site selection and layout scheme for emergency service facilities in disaster-prone areas.
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