Emergency response and disaster investigation of Menyuan M6.9 earthquake in Qinghai Province
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摘要: 2022年1月8日1时45分在青海省海北藏族州门源县（37.77°N，101.26°E）发生M6.9地震，震源深度10 km，此次地震波及到甘肃省河西走廊地区。地震发生后，国务院抗震救灾指挥部办公室、应急管理部立即启动国家地震灾害三级应急响应。应急管理部、中国地震局连夜派出工作组赴现场协助地方开展灾害调查、地震趋势研判、烈度评定等工作。青海省和甘肃省立即启动联防联控机制，迅速开展地震灾害应急处置工作。本文就此次地震的应急响应、灾情调查和烈度评定情况进行详细梳理，为今后高效应对此类大震提供经验积累和科学参考。
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关键词:
- 青海门源M6.9地震 /
- 应急响应 /
- 灾情调查 /
- 地震烈度
Abstract: On January 8, 2022, at 1: 45, an earthquake of M6.9 occurred in Menyuan County (37.77°N, 101.26°E ), Haibei Tibetan Autonomous Prefecture, Qinghai Province, with a focal depth of 10 km. The earthquake affected the Hexi Corridor area of Gansu Province. After the earthquake, China’s State Council’s Earthquake Relief Headquarters Office and the Ministry of Emergency Management immediately launched the national third-level emergency response of earthquake disasters. The Ministry of Emergency Management and the China Earthquake Administration sent working groups to the site overnight to assist local governments in disaster investigation, earthquake trend judgment, intensity evaluation and other work. Qinghai Province and Gansu Province immediately launched the joint prevention and control mechanism to quickly carry out emergency response to earthquake disasters. In this paper, the emergency response, disaster investigation and intensity evaluation of this earthquake are sorted out in detail, so as to provide experience accumulation and scientific reference for such large earthquakes with high effects in the future. -
图 1 门源M6.9地震灾情调查点分布图
Figure 1. Distribution map of disaster investigation points of Menyuan M6.9 earthquake
图 2 地表破裂情况 （主要由李志敏团队提供）
Figure 2. The situation of surface rupture (mainly provided by Li Zhimin team)
图 3 铁路和桥梁破坏情况 （主要由杨里臣团队提供）
Figure 3. The damage situation of railway and bridge (mainly provided by Yang Lichen team)
图 4 建筑物破坏情况
（a） 土木结构房屋受损情况；（b） 砖木结构房屋受损情况；（c） 砖混结构房屋受损情况
Figure 4. Damage situation of buildings
（a） Damage of civil structure houses；（b） Damage of brick-wood structure houses；（c） Damage of brick-concrete structure houses
表 1 建筑物破坏比（单位：%）
Table 1. Damage ratio of buildings (unit：%)
地震震区 结构类型 毁坏 严重破坏 中等破坏 轻微破坏 基本完好 Ⅵ度区（6度） 土木结构 0.00 0.00 5.00 15.00 80.00 砖木结构 0.00 0.00 3.00 10.00 87.00 砖混结构 0.00 0.00 0.00 3.00 97.00 框架结构 0.00 0.00 0.00 0.20 99.80 Ⅶ度区（7度） 土木结构 0.00 5.00 12.00 26.00 57.00 砖木结构 0.00 2.00 6.00 20.00 72.00 砖混结构 0.00 0.00 3.00 10.00 87.00 框架结构 0.00 0.00 0.00 0.05 99.95 
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