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贵州地区“小震大灾”现象剖析——以2024年7月24日贵州水城ML 4.6地震为例
Analysis of the phenomenon of “small earthquakes and great disasters” in Guizhou: A case study of ML 4.6 earthquake in Shuicheng, Guizhou on July 24, 2024
- DOI:
- 作者:
- 李世杰1, 罗丹芩1*, 唐德龙1, 谢卓娟2, 包海梅1, 代虎1, 陶卓1, 张瑞黎1
LI Shijie1, LUO Danqin1*, TANG Delong1, XIE Zhuojuan2, BAO Haimei1, DAI Hu1, TAO Zhuo1, ZHANG Ruili1
- 作者单位:
- 1 中国贵阳 550001 贵州省地震局;
2 中国北京 100085 应急管理部国家自然灾害防治研究院
1 Guizhou Earthquake Agency, Guiyang 550001, China;
2 National Natural Disaster Prevention and Control Research Institute of Emergency Management Department, Beijing 100085, China
- 关键词:
- 水城地震;震害调查;场地条件;小震大灾
Shuicheng earthquake; earthquake damage investigation; site condition; small earthquake and big disaster
- 摘要:
- 六盘水市位于贵州省西部,该市水城区地震设防烈度为Ⅵ—Ⅶ度,区内建筑以砖混结构和框架结构为主,在2024年水城“7·24”ML 4.6地震中,相邻位置不同结构类型的建筑震害差异明显。通过对震害区不同房屋建筑结构的现场调查,发现部分建筑在烈度不高情况下出现较大震害,分析认为,房屋建筑构造方式不合理或建造场地条件受限,是贵州地区“小震大灾”的原因之一。本文在分析相同烈度下不同建筑结构遭受震害差异的同时,对今后该地区房屋建筑的建造方式给出初步建议。
Liupanshui City is located in the west of Guizhou Province, and the earthquake fortification intensity of Shuicheng District in this city isⅥ -Ⅶ. The existing buildings in the area are mainly brick and concrete structures and frame structures. There were significant differences in damage to buildings of different structural types in adjacent locations caused by ML 4.6 earthquake in Shuicheng, Guizhou on Julu 24, 2024. By investigating the seismic damage of different building structures near the epicenter, it was found that some buildings experienced significant damage under low intensity conditions, mainly due to unreasonable building construction methods and limitations in construction site conditions. This is also one of the reasons for the “small earthquakes and big disasters” in Guizhou region. This article analyzes the different causes of seismic damage to buildings with the same intensity but different structures, and provides preliminary suggestions for the construction methods of buildings in the region in the future.
2024,45(6): 171-176
DOI:10.3969/j.issn.1003-3246.2024.06.020
基金项目:贵州省地震局地震科技基金(项目编号:GZSDZJDZKJJJ202105,GZSDZJKYJJKT-202301,GZSDZJKYJJKT-202302)
作者简介:李世杰(1991—),男,高级工程师,主要研究方向:地震地质;地震危险性;地震活动性。E-mail:729883299@qq.com
*通讯作者:罗丹芩(1992—),女,工程师,主要研究方向:工程地震、地震活动性。E-mail:674225525@qq.com
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