堰塘滑坡的地震危险性分析  

Analysis of Seismic Risk on Yantang Landslide

作　　者：魏贵春[1] 陈俊华[1] 张丽芬[1,2] 申学林[1] 陈圆圆[1] 

机构地区：[1]中国地震局地震研究所,武汉430071 [2]中国地震局地壳应力研究所武汉创新基地,武汉430071

出　　处：《长江科学院院报》2010年第5期88-91,共4页Journal of Changjiang River Scientific Research Institute

基　　金：国家自然科学基金重点基金(407303172011);中国地震局地震研究所青年创业基金(IS200856070)

摘　　要：姚家坪水利枢纽工程位于湖北省恩施市,堰塘滑坡是库区内主要的巨型滑坡,直接威胁姚家坪电站系统安全,危害性较大。滑坡体在天然状态下处于稳定状态,但在地震作用下,滑坡体处于极限平衡或不稳定状态。依据区域地震活动性、地质构造背景,分析现今各断裂带的地震活动性,判断出潜在的强震、中强震危险震源区,确定地震活动性参数和地震动参数衰减规律,为姚家坪电站系统的抗震设防和制定防灾对策提供依据。Yaojiaping Hydro-junction Project is located in Enshi City, Hubei Province. Yantang landslide is a large landslide in the reservoir area, which directly threatens the safey of the Yaojiaping Hydropower Station system, it has more harmfulness. The landslide will be steady in natural condition, but under the seismic action, it will be in unsteady or ultimately balanced condition. On the basis of the activity of surrounding historical earthquakes and geological structure of Yantang landslide, the paper analyzes the activity on fault zone, and finds out the potentially seismic source of the strong and medium strong earthquakes, parameters of its activity and the attenuation laws of seismic parameters. The study provides an essential basis for seismic design and anti-seismic countermeasures of the Yaojiaping Hydropower Station system.

关 键 词：堰塘滑坡 地震活动性参数 危险性分析 

分 类 号：P315.5[天文地球—地震学]