云南楚雄州地震活动与地质灾害发育的关系  

The Relationship between Seismicity and Development of Geological Hazards in Chuxiong Yi Autonomous Prefecture,Yunnan Province

作　　者：李圣 卿元华 庄儒新[1] 罗嘉铮 段炜[1] 朱智娇 LI Sheng;QING Yuanhua;ZHUANG Ruxin;LUO Jiazheng;DUAN Wei;ZHU Zhijiao(Yunnan Earthquake Agency,Kunming 650224,China;China School History Geography and Tourism,Chengdu Normal University,Chengdu 611130,China;Yunnan Zhenke Seismic Technology Engineering Company,Kunming 650041,China)

机构地区：[1]云南省地震局,昆明650224 [2]成都师范学院史地与旅游学院,成都611130 [3]云南震科抗震技术工程公司,昆明650041

出　　处：《华北地震科学》2023年第3期15-21,共7页North China Earthquake Sciences

基　　金：云南省地震局青年基金项目“楚雄州地震活动与地质灾害发育的关联性”(2022ZLK03)。

摘　　要：基于楚雄州地震灾害风险普查和地质灾害调查结果,采用ArcGIS空间分析、数理统计方法,从地震地质灾害、地震烈度、地震活动性、震后地质灾害演化4个方面探讨了该州地震活动与地质灾害发育的关系。研究表明:地震触发的地质灾害以滑坡、崩塌、地裂缝为主,中强震活动频繁区域地质灾害相对较发育,尤其在6级以上地震的高烈度或低烈度交叉区域,6级以下地震虽然触发地质灾害程度较弱或不能触发,但对地质灾害发育起了促进作用;震后地质灾害具有长期活动性,武定6.5级地震导致境内地质灾害活动持续长达23年,大姚6.2、6.1级地震致使大姚县地质灾害活动持续18年之久。楚雄州未来灾后重建时应充分考虑震后地质灾害长期活动性特点,以避免人员伤亡和财产损失。Based on the seismic hazard risk survey and geological hazards survey in Chuxiong Yi Autonomous Prefecture,the ArcGIS spatial analysis and mathematical statistics were used,the relationship between the seismicity and the development of geological hazards is discussed from the aspects of seismic geological hazards,seismic intensity,seismicity and the evolution of geological hazards after earthquakes.The results show that the main geological hazards triggered by earthquake are landslide,collapse and ground fissure,especially in the high intensity or low intensity crossing area of the earthquakes above magnitude 6.The earthquakes below magnitude 6 can not trigger the geological disasters or trigger the geological hazards to a lesser extent,but they can promote the development of geological hazards.After the earthquake,geological hazards have long-term activity.The magnitude 6.5 earthquake in Wuding County led to sustained geological disaster activity for 23 years,while the magnitude 6.2 and 6.1 earthquakes in Dayao County led to sustained geological disaster activity for 18 years.In future post-earthquake reconstruction in Chuxiong Yi Autonomous Prefecture,full consideration should be given to the long-term activity characteristics of post-earthquake geological hazards in order to avoid loss of life and property.

关 键 词：地震活动 地质灾害 震后长期活动性 

分 类 号：P315.94[天文地球—地震学]