青海玉树MS7.1级地震地质灾害主要特征  

RESEARCH ON MAJOR CHARACTERISTICS OF GEOHAZARDS INDUCED BY THE YUSHU M_S7.1 EARTHQUAKE

作　　者：殷跃平[1] 张永双[2] 马寅生[2] 胡道功[2] 张作辰[1] 

机构地区：[1]中国地质调查局,北京100037 [2]中国地质科学院地质力学研究所,北京100081

出　　处：《工程地质学报》2010年第3期289-296,共8页Journal of Engineering Geology

基　　金：国家科技支撑计划项目(2006BAC04B02);国土资源大调查项目(No.1212011014035)资助

摘　　要：2010年4月14日7时49分,青海省玉树县发生MS7.1级地震。玉树地震产生较连续的地表破裂和大量房屋破坏,并诱发了滑坡、崩塌和震裂山体。此外,地震诱发的砂土液化、水渠溃决等加剧了局部山体地质灾害。通过现场调查和地震前后玉树县地质灾害发育状况,简要阐述了地震地质灾害的主要发育特征,包括震后地质灾害数量明显增加、地震地质灾害分布受活动断裂控制、低位滑坡为主、地质灾害链生效应显著等,并对灾后重建过程中的地质灾害防治提出了建议。The Yushu Ms 7. 1 earthquake was happened at 7 ： 49 on April 14, 2010 in Yushu county of Qinghai province. Besides continuous surface rupture and a large number of properties collapse,the types of geohazards induced by earthquake include rock fall, landslide, potential debris flow, etc. In addition, the geohazards can be aggravated by the earthquake-induced sandy soil liquefaction, as well as burst of a channel, in local areas. Based on field investigation and comparison of the geohazard data before and after the Yushu earthquake, the authors summarize the major characteristics of the Yushu Ms7. 1 earthquake, such as the amount of geohazard increasing obviously after the earthquake, the distribution of geohazards controlled by the active faults, the low-position soil/colluvial landslides predominant, the effect of geohazard chain being notable, etc. some proposals for geohazard control during reconstruction have been given forth in this paper.

关 键 词：玉树地震 地震地质灾害 砂土液化 低位滑坡 地震破裂 

分 类 号：P642[天文地球—工程地质学]