地震作用下公路斜坡落石运动特征研究  

STUDY ON ROCKFALL MOVEMENT CHARACTERISTICS OF HIGHWAY SLOPE UNDER EARTHQUAKE

作　　者：王宏益 沈军辉[2] 陶盛宇[1] 师华鹏 WANG Hong-yi;SHEN Jun-hui;TAO Sheng-yu;SHI Hua-peng(Guangxi Communications Design Group Co.,Ltd.,Nanning 530029,China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu u610059,China)

机构地区：[1]广西交通设计集团有限公司,南宁530029 [2]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059

出　　处：《地质灾害与环境保护》2024年第3期32-36,共5页Journal of Geological Hazards and Environment Preservation

摘　　要：以剑(阁)青(川)公路斜坡落石为研究对象,结合斜坡微地貌,在现场调绘落石运动痕迹与停积位置的基础上,建立地震作用下落石运动特征的二维数值模型。运用Rockfall软件进行落石的运动特征模拟,探究地震作用下的公路斜坡落石运动规律及致灾影响,模拟成果与汶川特大地震造成的既有落石现场运动痕迹吻合。根据模拟成果获取落石停积位置、平移速度、弹跳高度等运动特征参数,为地震作用下公路斜坡落石的工程防治的位置、拦挡高度及能级大小等提供了重要参考依据。Taking the highway slope rockfall from Jiange County to Qingchuan County as the research object and combining with the slope microlandform, a two-dimensional numerical model of rockfall movement characteristics under earthquake is established based on the field mapping of rockfall movement traces and settling positions. The Rockfall simulation software is used to simulate the movement characteristics of rockfalls, exploring the laws and disaster impacts of rockfall movements on highway slopes under earthquake. The simulation results are consistent with the movement traces observed in previous rockfalls caused by the Wenchuan earthquake. Based on these simulation results, important reference parameters such as rockfalls stop positions, translation speed, and bouncing heights of rockfalls can be obtained, providing valuable guidance for engineering prevention and control measures for road slope rockfalls under earthquake action including earthquake.

关 键 词：地震 公路斜坡 落石 数值模拟 运动特征 

分 类 号：P315[天文地球—地震学] P694[天文地球—固体地球物理学] U417.1[天文地球—地球物理学]