云南省地震局表示将通过断裂探查、提升抗震设防标准及推广减隔震技术,增强城市防震减灾韧性
云南省发布《“十五五”防震减灾规划》,聚焦滇中城市群,旨在通过地震构造探查、提升基础设施抗震标准及推广减隔震技术,重点防范城市直下型地震风险。
AI-generated summary
云南省位于青藏高原东南缘及多个板块碰撞带,地质活动频繁,滇中地区作为经济核心区,面临较高的地震风险。
中新网昆明11月6日电 (罗婕)6日,云南省“开局起步‘十五五’”主题系列新闻发布会·防震减灾专场在昆明市举行。记者从会上获悉,该省近日印发的《云南省“十五五”防震减灾规划》(以下简称《规划》)中,提出实施重点地区地震构造危险源探查,特别为滇中城市群等人口密集区防范城市直下型地震提供基础支撑。
云南省地处青藏高原东南缘、印度板块与欧亚板块碰撞带前缘、南北地震带中南段,活动断裂密集。滇中地区是该省经济发展核心地带,人口密集、经济发达,先进制造业和新兴产业聚集,需重点防范城市直下型地震。
城市直下型地震指震源位于城市城区或附近正下方的浅源地震。其核心特征在于城市中人口、房屋等建筑最为密集区域可能位于极震区,如防范应对措施不足,大地震极高的地震烈度和地表破裂可能造成灾难性后果,例如1976年唐山7.8级地震、1995年日本神户7.2级地震等。
会上,云南省地震局党组成员、副局长李飞表示,城市直下型地震中,预警系统为城区提供的预警时间非常短,极震区基本处于预警“盲区”。因此,防御这类地震更需要把功夫下在震前。
李飞介绍,《规划》在总体布局中,把滇中地区单独作为一个单元,对直下型地震灾害风险提出针对性任务。“十五五”期间,云南将继续开展二、三级断裂探查和城市活断层探测,同步开展建筑物等承灾体调查,完成地震灾害风险的评估和区划;科学合理确定重点地区、关键基础设施抗震设防标准,健全地震灾害风险管控机制,合理划定防灾避难空间,并完善地方政府、行业部门和地震部门的联合监管体系等。
此外,云南还将重点加强滇中地区城市基础设施抗震性能。具体而言,将推广减隔震技术和韧性材料应用,拓展结构健康诊断、地震预警等技术应用,强化高层建筑、地下空间、大型综合体、城市生命线工程等防震减灾技术支撑,统筹应急避难场所布局和建设,提升城市防震减灾韧性水平。同时加强防震减灾宣传教育。
AI outlook — possibilities, not facts
云南省将开展二、三级断裂探查及城市活断层探测工作。
Very likely · Within months
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