高速远程滑坡动力学研究进展  

Review on Rock Avalanche Dynamics

作　　者：王玉峰[1,2] 林棋文 李坤[1] 史安文 李天话 程谦恭[1,2] WANG Yu-feng;LIN Qi-wen;LI Kun;SHI An-wen;LI Tian-hua;CHENG Qian-gong(Department of Geological Engineering,Southwest Jiaotong University,Chengdu 611756,Sichuan,China;State-province Joint Engineering Laboratory of Spatial Information Technology for High-speed Railway Safety,Southwest Jiaotong University,Chengdu 611756,Sichuan,China)

机构地区：[1]西南交通大学地质工程系,四川成都611756 [2]西南交通大学高速铁路运营安全空间信息技术国家地方联合工程实验室,四川成都611756

出　　处：《地球科学与环境学报》2021年第1期164-181,共18页Journal of Earth Sciences and Environment

基　　金：国家自然科学基金项目(41877226,41877237,41761144080,41530639)。

摘　　要：高速远程滑坡动力学机理研究一直是国际地质灾害领域长期关注的热点与前沿性科学。通过对已有研究成果的系统性梳理,对高速远程滑坡动力学研究现状进行了概略性述评,厘定了本文所讨论的高速远程滑坡的定义,阐述了高速远程滑坡的典型沉积学特征,并对国内外学者提出的最有影响、最有地质证据支持的高速滑坡远程运动机理——摩擦生热减阻、滑带液化减阻、动力破碎减阻、底部裹挟减阻、剪切振动减阻、动量传递远程进行了论述。在此基础上,分析与讨论了高速远程滑坡动力学研究的发展趋势,提出今后研究所面临的深层次科学问题,并提出未来应进一步重点研究的关键科学问题在于速率相依摩阻弱化机理、破碎渐进相变耗能机理、过程相依波动减阻机理等。Rock avalanche dynamics are always research hotspots and frontier issues in the field of geological disasters over the world.Through a systematic review of the representative achievements in this field,the present status of rock avalanche were reviewed briefly,a further definition on rock avalanche discussed here was given,and a detailed description on the typical sedimentary structures of rock avalanches was conducted.Then,a review on these most influential hypotheses of rock avalanche hypermobility supported by geological evidences was carried out,including frictional heating,shear liquefaction,dynamic fragmentation,substrate entrainment,self-excited vibration,and momentum transfer.On these bases,the developing trends on rock avalanche dynamics were analyzed and discussed with the deep scientific issues facing in the future research being put forward.Meanwhile,some key scientific issues were proposed,including velocity-dependent frictional weakening mechanisms,energy dissipation mechanisms of fragmentation-dependent phase transformation,and process-dependent vibrational weakening mechanisms.

关 键 词：高速远程滑坡 研究进展 沉积学特征 动力学机理 研究现状 发展趋势 关键科学问题 

分 类 号：P694[天文地球—地质学] P642.22