2021年11月30日西藏双湖MS 5.8地震发生后,西藏自治区地震局立即组织专家及其他相关工作人员前往震区开展应急考察工作。通过对震区13个点位实地考察,并结合西藏自治区地震局绘制的地震烈度图与获得的震源机制解、郭祥云等获得的震源机制解,分析了震区受灾情况。结合该震区房屋抗震能力,认为本次地震中受灾房屋绝大多数为土木结构,未采取房屋抗震加固措施,建议今后房屋构建中应采取抗震加固措施。
After the Shuanghu MS 5.8 earthquake in Tibet on November 30, 2021, the Earthquake Agency of the Tibet Autonomous Region immediately organized experts and otherstaff to carry out the emergency investigation in the earthquake area. Combined with the field investigation of 13 points in the earthquake area, the seismic intensity map drawn by the Earthquake Agency of Tibet Autonomous Region and the focal mechanism solution obtained by Guo Xiangyun and the others, the disaster situation was analyzed. Based on the seismic resistance capacity of buildings in the earthquake area, it is considered that most of the buildings affected by the earthquake are civil structures without seismic reinforcement measures. It is suggested that seismic reinforcement measures should be taken for buildings in the future.
2022,43(6): 61-66 收稿日期:2022-07-28
DOI:10.3969/j.issn.1003-3246.2022.06.009
作者简介:洛桑罗布(1995-),男,学士,助理工程师,主要从事地震监测、地震现场应急工作。E-mail:435229367@qq.com
参考文献:
次仁多吉,文升梁,张建龙. 2016年西藏丁青5.5级地震烈度及震害特征分析[J]. 高原地震,2017,29(3):60-64.
郭铁龙,高原. 剪切波分裂揭示的青藏高原上地壳地震各向异性基本特征[J]. 地球物理学报,2020,63(3):1 085-1 103.
司金罗布,张建龙,土登次仁,等. 西藏双湖5.8级地震烈度调查与应急现场工作报告[R].拉萨:西藏自治区地震局,2021.
Seismology小组. 2021年11月30日西藏那曲市双湖县5.8级地震的震源机制中心解和主震在周围产生的位移场和应变场[R/OL].[2021-12-01]. https://ses-kled.cidp.edu.cn/info/1084/1285.htm.
文升梁,曹忠权,巴桑次仁,等. 西藏当雄6.6级地震应急行动及灾害特征[J]. 山西地震,2009,(1):34-38.
张立钊,赵越,吕广义,等. 沈北新区地震台观测地质环境评价与地电阻率异常应急处置[J]. 防灾减灾学报,2021,37(4):47-51.
张原,汤芸. 赈灾抢险中的社会弹韧性机制——汶川5·12大地震中阿尔村应急赈灾行动的人类学考察[J]. 云南社会科学,2018,22(5):10-16.