2023年甘肃积石山6.2级地震青海灾区地震地质灾害初步调查分析

doi:10.12196/j.issn.1000-3274.2024.01.020

地震 ›› 2024, Vol. 44 ›› Issue (1): 216-225.doi: 10.12196/j.issn.1000-3274.2024.01.020

2023年甘肃积石山6.2级地震青海灾区地震地质灾害初步调查分析

杨传成^1,2, 李智敏², 熊仁伟³, 盖海龙²

1.山东省震灾风险防治中心, 山东济南 250014;
2.青海省震灾风险防治中心, 青海西宁 810000;
3.中国地震局地震预测研究所, 北京 100036

收稿日期:2024-01-08 修回日期:2024-01-18 出版日期:2024-01-31 发布日期:2024-03-21
通讯作者: 李智敏, 正高级工程师。 E-mail: 28199609@qq.com
作者简介:杨传成(1982-), 男, 山东滕州人, 高级工程师, 主要从事土力学及年代学研究。
基金资助:
青海省基础研究计划项目(2022-ZJ-749)

Preliminary Investigation and Analysis of Seismic Geological Hazards in Qinghai Disaster Area Induced By the 2023 M_S6.2 Jishishan Earthquake

YANG Chuan-cheng^1,2, LI Zhi-min², XIONG Ren-wei³, GAI Hai-long²

1. Earthquake Risk Prevention Center of Shandong Province, Jinan 250014, China;
2. Earthquake Administration of Qinghai Province, Xining 810001, China;
3. Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China

Received:2024-01-08 Revised:2024-01-18 Online:2024-01-31 Published:2024-03-21

摘要/Abstract

摘要： 北京时间2023年12月18日23时59分, 甘肃省积石山县(35.70°N, 102.79°E)发生6.2级地震, 积石山县大河家镇为本次地震的宏观震中, 地震烈度为Ⅷ度(8度)。通过2023年12月18日甘肃积石山M_S6.2地震青海地区的现场初步调查发现, 这次地震造成大量房屋倒塌, 多处出现滑坡、地裂缝和喷砂冒水(液化)现象。由于震区浅表土质松软, 地下含水较多, 地震的破裂和构造作用造成浅表地体的流滑。本文简要介绍了本次地震的烈度分布、地震地质灾害类型及特点, 分析讨论总结此次地震灾害的特征及影响。本研究可为地质灾害重点防范区范围划定、趋势预测和灾后重建提供科学参考, 对今后抗震设防和防震减灾工作有启示作用。

关键词: 2023年积石山6.2级地震, 青海地区, 地质灾害, 流滑

Abstract: At 23:59 Beijing Time on December 18, 2023, an M_S6.2 earthquake occurred in Jishishan County, Gansu Province (35.70°N, 102.79 °E). Dahejia Town of Jishishan County was the macro epicenter of the earthquake, and the earthquake intensity was Ⅷ (8 degrees). Based on the preliminary field investigation of Qinghai area of Jishishan M_S6.2 earthquake on December 18, 2023, geological hazards are found in many places. The distribution of earthquake intensity, types and characteristics of seismic geological hazards are introduced. The characteristics and effects of the earthquake hazards are analyzed and discussed.

Key words: The 2023 Jishishan M_S6.2 earthquake, Qinghai region, Geological hazards, Slippage

中图分类号:

P315.7

杨传成, 李智敏, 熊仁伟, 盖海龙. 2023年甘肃积石山6.2级地震青海灾区地震地质灾害初步调查分析[J]. 地震, 2024, 44(1): 216-225.

YANG Chuan-cheng, LI Zhi-min, XIONG Ren-wei, GAI Hai-long. Preliminary Investigation and Analysis of Seismic Geological Hazards in Qinghai Disaster Area Induced By the 2023 M_S6.2 Jishishan Earthquake[J]. EARTHQUAKE, 2024, 44(1): 216-225.

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2023年甘肃积石山6.2级地震青海灾区地震地质灾害初步调查分析

Preliminary Investigation and Analysis of Seismic Geological Hazards in Qinghai Disaster Area Induced By the 2023 M_S6.2 Jishishan Earthquake

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2023年甘肃积石山6.2级地震青海灾区地震地质灾害初步调查分析

Preliminary Investigation and Analysis of Seismic Geological Hazards in Qinghai Disaster Area Induced By the 2023 MS6.2 Jishishan Earthquake

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Preliminary Investigation and Analysis of Seismic Geological Hazards in Qinghai Disaster Area Induced By the 2023 M_S6.2 Jishishan Earthquake