安全保障是规划、建设避难疏散场所以及组织、管理避难行动和避难生活的核心问题。避难疏散场所必须进行环境、规模与设施安全评价,评价指标包括市区危险度和避难疏散场所安全度。安全评价的必要性避难是临灾预报发布后或灾害发生时把市民从危险性高的住所、工作或活动场所紧急撤离并安置到预定的更安全的场所。避难的主要目的是 Security is at the heart of planning, building evacuation sites and organizing, managing asylum and refugees. Evacuation sites must be evacuated to the environment, scale and facilities safety assessment, evaluation indicators include the risk of urban areas and refuge evacuation sites safety. Necessity of safety assessment Asylum is evacuation and resettlement of citizens from dangerous places, work or activities to the scheduled safer places after the disaster prediction is issued or at the time of disasters. The main purpose of asylum is