区域边坡地震危险性评价理论研究进展  

Advances in the theory of seismic hazard assessment of regional slopes

作　　者：崔玉龙[1] 刘爱娟 CUI Yulong;LIU Aijuan(School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, Anhui, China;China Three Gorges Corporation, Wuhan 430010, Hubei, ,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001 [2]中国长江三峡集团有限公司,湖北武汉430010

出　　处：《地震工程学报》2022年第3期518-526,共9页China Earthquake Engineering Journal

基　　金：安徽省高校自然科学研究项目(KJ2020ZD34);国家自然科学基金资助项目(41807267)。

摘　　要：地震滑坡会对自然环境和人民生活带来极大破坏,在大区域范围内对边坡遭受地震影响的程度进行评价判断,主要采用具有预测性质的潜在地震诱发滑坡危险性评估的方法。因此,深入研究边坡地震危险性分析的基本理论并作出符合实际的危险性分布图对工程建设和灾害防治具有较大意义。梳理并阐述具有预测性质的边坡地震危险性分析所需数据资料及各类数据的研究进展,将利用永久位移法进行边坡地震危险性评价所需数据归纳为三种:(1)边坡在地震影响下破坏程度的判定依据;(2)区域地震动参数如峰值加速度、阿里亚斯强度;(3)边坡坡体基本参数如黏聚力、摩擦角、重度、滑块厚度、坡角等。边坡地震危险性评价的准确程度与这三类数据的研究程度与准确性有关。文章对三类数据分别详细阐述各自的研究现状与成果应用,最后分析理论存在的部分问题以及以后的研究方向。Seismic landslides will bring great damage to the natural environment and people's lives.To evaluate and judge the extent of seismic impact on slopes in a large area,the risk assessment method of potential earthquake-induced landslides with predictive properties is mainly adopted.It is of great significance for engineering construction and disaster prevention to deeply study the basic theory of seismic slope hazard analysis and to draw the actual hazard distribution map.The research progress of data for seismic hazard analysis of slopes with predictive properties is reviewed.The data for evaluating slope seismic risk with permanent displacement method can be classified into three types:(1)The judgement basis of slope failure degree under the influence of earthquake;(2)Regional ground motion parameters,such as peak acceleration and Arias intensity;(3)The basic parameters of slope,such as cohesive force,friction angle,gravity,slider thickness,and slope angle.The accuracy of slope seismic risk assessment is related to the depth and accuracy of the three kinds of data.The research status and application of the three types of data are described in detail.Finally,some problems in the theory and the future research directions are analyzed.

关 键 词：地震边坡 地震危险性评价 Newmark永久位移 永久位移预测模型 地震动预测模型 

分 类 号：TU42[建筑科学—岩土工程]