高速远程崩滑及其形成条件初探

杨裕云; 胡新丽; 王亮清; 章广成

高速远程崩滑及其形成条件初探

中国地质大学武汉工程学院武汉 430074

基金项目:

国家重点基础研究发展计划(973)项目(2011CB710606), 中央高校基本科研业务费专项基金优秀青年教师特色学科团队(CUG090104)

详细信息

作者简介:
杨裕云,长期从事工程地质和环境地质教学科研工作.Email:zhangguangc@foxmail.com

中图分类号: P642.22
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出版历程
- 收稿日期: 2011-05-10
- 修回日期: 2011-09-30
- 刊出日期: 2011-12-25

LONG RUNOUT ROCKFALL-LANDSLIDES AND THEIR FORMING CONDITIONS

Faculty of Engineering,China University of Geosciences,Wuhan 430074

摘要

摘要: 高速远程崩滑所造成的地质灾害极为严重,波及范围大,早已引起国内外工程技术人员的关注。2008年 5 12 汶川8级地震所诱发的崩塌和滑坡数以万计,其中高速远程崩滑数量虽不多,但是灾害严重。与一般崩塌和滑坡相比,高速远程崩滑的形成条件究竟有何差异？为了预测高速远程崩滑灾害的严重性和波及范围,以便为国土规划和防治对策设计提供依据,作者依据本人的工程实践经验并搜集分析了国内外所发生的高速远程崩滑实例,在前人研究的基础上,总结了高速远程崩滑的特征,系统地分析了影响高速和远程的因素。本文在考虑地震、降雨、地下水、采矿活动等因素作用导致斜坡失稳启动前提下,从崩滑体特征及其所处地质环境出发,提出形成高速远程崩滑必须同时具备以下3个条件:(1)崩滑体规模巨大,体积在106m3以上; (2)剪出口高悬,高差达数十至数百米; (3)存在有利于动体运动的地形条件。这为进一步预测高速远程崩滑的空间分布提供了重要的研究内容。
- 高速远程崩滑 /
- 高势能 /
- 悬托型剪出口 /
- 碎屑流
Abstract: The geological event of long runout rockfall-landslide can cause great damages and broader coverage,which are followed closely by engineering and technical personnel.The Wenchuan Earthquake,happened in May 12, 2008,induced tens of thousands of landslides.Though the number of long runout rockfall-landslides was not high,they did greater damage than the other types of landslides.Comparing with general landslides,the forming conditions of the long runout rockfall-landslide are studied.In order to predict its severity and range and provide basis for homeland planning and preventive treatment design,this paper summarizes its characteristic and comprehensively analyses the factors influencing its high speed and long distance.The paper is based on practical engineering experience and widely collection of studies about the long runout rockfall-landslides at home and abroad.Earthquake,ground water,and mining activities can cause the landslide instability and make it active.The paper proposes that the long runout rockfall-landslide must exist the following three conditions: namely large-scale sliding masses,cut export overhang and the terrain available for geology body to movement.It provides important research contents for further prediction of the space distribution of the long runout rockfall-landslide.
- Long runout rockfall-landslide /
- High potential energy /
- Suspended shear export /
- Debris flow

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参考文献(1)

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