首页|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

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

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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.
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
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.

Shuicheng earthquakeearthquake damage investigationsite conditionsmall earthquake and big disaster

李世杰、罗丹芩、唐德龙、谢卓娟、包海梅、代虎、陶卓、张瑞黎

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中国贵阳 550001 贵州省地震局

中国北京 100085 应急管理部国家自然灾害防治研究院

水城地震 震害调查 场地条件 小震大灾

2024

地震地磁观测与研究
中国地震台网中心 中国地震局地球物理研究所 中国地震学会地震观测技术专业委员会

地震地磁观测与研究

影响因子:0.248
ISSN:1003-3246
年,卷(期):2024.45(6)