摘要
青藏高原多年冻土地区融冻泥流型滑坡属于长度与深度之比为无限大的浅层滑坡 ,应用无限斜坡分析方法研究滑坡的稳定性是完全合适的。考虑渗流方向与斜坡方向一致的情况 ,应用有效应力原理 ,本文推导出不同含水条件下融冻泥流型滑坡安全系数的解析表达式 ,绘制出了干土坡和完全饱水土坡稳定性分析图表 ,并对青藏公路K30
Landslide in gelifluction is a new geological hazard caused by human activity in permafrost region of Qinghai-Tibet plateau. It belongs to shallow landslide with small length-width ratio. In general, infinite slope analysis method is applied to it. According to identical seepage direction to slope surface,with the effective stress principle,the analytical expression of safety factor of the landslide in gelifluction with different water content conditions is derivated and stability analysis chart of dry and fully saturated water soil are plotted. Lastly,taking the Landslide in gelifluction in milestone K3035 of Qinghai-Tibet highway as an example,the paper analyzes and evaluats the stability of the landslide.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2004年第3期49-52,共4页
Coal Geology & Exploration
基金
国家自然科学基金项目 (编号 :5 0 0 0 80 16 )
关键词
融冻泥流
滑坡
稳定性
无限斜坡
青藏高原
gelifluction
landslide
stability analysis and evaluation
infinite slope
Qinghai-Tibet plateau
