云南巧家<i>M</i><sub>S</sub>5.0地震灾害特点与减灾对策分析

南燕云; 李亦纲; 李永强; 代博洋; 刘亢; 聂高众

doi:10.11899/zzfy20210416

云南巧家M_S5.0地震灾害特点与减灾对策分析

doi: 10.11899/zzfy20210416

南燕云^1,,
李亦纲¹,
李永强²,
代博洋¹,
刘亢^{1, 4},
聂高众^3, ,

1.
中国地震应急搜救中心, 北京 100049
2.
云南省地震局, 昆明 650224
3.
中国地震局地质研究所, 北京 100029
4.
河北省地震动力学重点实验室, 河北三河065201

基金项目: 河北省地震动力学重点实验室开放基金项目（FZ212101）

详细信息

作者简介:
南燕云，女，生于1987年。博士，工程师。主要从事地震灾害及应急响应方面的研究。E-mail：01107203nyy@163.com

通讯作者:
聂高众，男，生于1964年。研究员。主要从事地震应急、地震综合减灾的研究。E-mail：niegz@ies.ac.cn

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出版历程
- 收稿日期: 2021-01-20
- 刊出日期: 2021-12-31

Analysis on Characteristics and Countermeasures of Qiaojia M_S5.0 Earthquake in Yunnan Province

1.
National Earthquake Response Support Service, Beijing 100049, China
2.
Earthquake Administration of Yunnan Province, Kunming 650224, Yunnan, China
3.
Institute of Geology, China Earthquake Administrator, Beijing 100029, China
4.
Hebei Key Laboratory of Earthquake Dynamics, Sanhe 065201, Hebei, China

摘要

摘要: 2020年5月18日21时47分云南省巧家县小河镇发生M_S5.0地震，本文结合震区背景信息和现场调查结果，详细阐述了此次地震人员伤亡、房屋震害、地质灾害情况及致灾原因。分析认为，震区易发生小震致灾现象，与当地民居抗震性能较差、次生地质灾害严重、人口密集且居住地多位于山坡及山底等因素有关。为避免小震致灾，应提高震区及周边地区建筑物抗震能力，进行合理规划，迁移高风险区居民点。
- 震害特征 /
- 致灾分析 /
- 减灾对策
Abstract: At 21:47 on May 18th, 2020, an Ms5.0 earthquake struck Qiaojia County, in Yunnan Province. Based on the seismotectonic information and on-site investigations , this paper elaborates on the casualties, housing damages, geological disasters and the causes of the earthquake disasters clearly. The result shows that this area is prone to small earthquakes lead to major disasters, which are related to the poor seismic performance of local residential buildings, severe secondary geological disasters, dense population and mostly located on hillsides and mountain bottoms. In order to prevent this phenomenon, it is necessary to improve the earthquake resistance of buildings in the earthquake zone and surrounding areas, make rationally planning and relocate settlements in high-risk areas.
- Characteristics of earthquake damage /
- Analysis of hazard factors /
- Disaster mitigation countermeasures

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图 1 垭口村良子小组生产用房倒塌

Figure 1. The collapse of the production house of Liangzi group in Yakou village

下载: 全尺寸图片幻灯片

图 2 普谷村至垭口村段滚石造成交通中断

Figure 2. Traffic interruption caused by rolling rocks from Pugu village to Yakou village

下载: 全尺寸图片幻灯片

图 3 云南省巧家县小河镇M_S5.0地震烈度图

注：地震烈度VI度，土木房屋个别倒塌，少数破坏；砖混房屋和框架房屋个别轻微破坏，多数基本完好。

Figure 3. Intensity distribution map of Qiaojia M_S5.0 earthquake in Yunnan province

下载: 全尺寸图片幻灯片

图 4 巧家县及周边县城震级相近的历史地震分布

Figure 4. Distribution map of historical earthquakes of similar magnitude in Qiaojia county and surrounding areas

下载: 全尺寸图片幻灯片

表 1 巧家县及周边县城震级相近的历史地震比较

Table 1. Comparison of historical earthquakes of similar magnitude in Qiaojia county and surrounding areas

震例	死亡人数/人	受伤人数/人	地震灾害致死人数/人
2020年巧家5.0级地震	4	28	2
2003年鲁甸5.0级地震	0	24	—
2003年鲁甸5.1级地震	4	94	—
2004年鲁甸5.6级地震	4	597	—
2006年盐津5.1、4.7级地震	2	67	20
2006年盐津5.1级地震	23（含失踪1人）	114	20
2010年巧家4.8级地震	0	17	—
2012年彝良5.7级和5.6级地震	81	834	65
2014年鲁甸6.5级地震	729（含失踪112人）	3 143	250
2014年永善5.0级地震	0	20	—
2014年永善5.3级地震	0	5	—

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