文档介绍：
两家人水电站滑石板顺层岩质边坡滑坡灾
害分析#
石崇,王海礼,王盛年,张玉龙*
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(河海大学岩土工程研究所,岩土力学与堤坝工程教育部重点试验室,南京 210098)
摘要:滑坡是一类常见的地质灾害,受地形几何、滑坡体性质、滑面性质以及地震、降雨、
人工活动等外界因素的影响。本文立足云南省金沙江虎跳峡段两家人水电站左岸滑石板顺层
岩质边坡在 1996 年 10 月 28 日发生滑坡的事实,在大量地质勘查基础上,建立了满足滑体、
滑面特性、考虑地震、降雨过程的滑坡模型,通过一系列的滑坡数值模拟试验,探讨了滑面
摩擦系数、滑体强度等各因素对滑坡堆积、块度、滑坡速度的影响规律,对当时滑坡情况进
行了反馈分析,在此基础上对滑石板顺层岩质边坡的稳定性进行了探讨。该方法可为后续滑
石板边坡的稳定性研究及灾害预测提供理论依据。
关键词:滑坡灾害;滑石板;顺层岩质边坡;岩土力学参数;颗粒离散元
中图分类号:TU457
Deposit slope assessment of geological hazard in talc sheet
rock landslide in Liangjiaren hydropower station
SHI Chong, WANG Haili, WANG Shengnian, ZHANG Yulong
(Key Laboratory of Geomechanics and Embankment,Institute of Geotechnical Research,Hohai
University,Nanjing 210098)
Abstract: Landslide disaster is one of the most frequently happening geological disasters, the process
of which is governed by terrain geometry, characteristic of landslide rock mass, characteristic of slip
surface and external environment load such as earthquake, rainstorm and human activity. Based on the
fact of landslide disaster at bedding rock slope of left bank of Tiger-leap-Gorger, Liang-jia-ren
hydropower station, on October 28,1996, a landslide model is built up to fit the slide rock mass, slip
face, and effect of earthquake, rainstorm according to a large number of geological survey. then a series
of numerical simulation of landslide is proposed to study the rules between slip friction coefficient,
strength of slide rock mass and landslide geometry, debris size and velocity of landslide, so the process
of landslide of bedding rock slope is feedback analyzed and slope stability is discussed. This method
can be used in following stability research of similar slope and corresponding assessment of geological
hazard.
Key words: landslide disaster; talc sheet rock; bedding rock slope; geotechnical parameters; particle
flow discrete element method
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0 引言
在岩石工程中,滑坡是一类存在巨大风险的地质灾害。由于大量裂隙、节理面的存在,
导致滑坡过程是岩体破碎、宏观强度不断降低的过程,受滑体性质、滑面性质以及地震、降