黄土路堑高边坡稳定性分析新方法--特殊滑裂面快速搜索法  

New Stability Analysis Method for High Cutting Loess Slope——Quick Search Method for Special Slide Surface

作　　者：郑良飞[1] 折学森[1] 叶万军[2] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]西安科技大学地质与环境工程系,陕西西安710054

出　　处：《地球科学与环境学报》2008年第2期188-191,共4页Journal of Earth Sciences and Environment

基　　金：陕西省自然科学基金项目(2007E209);陕西省交通厅项目(06-19K)

摘　　要：黄土路堑高边坡自身的特点,决定了其失稳破坏时滑裂面的特殊特征。综合考察大量失稳黄土高边坡实例,发现其滑裂面剖面形态多呈上陡下缓的"L"形。利用传统稳定系数的概念进行分析,与实际情况出入较大。利用数学方法,将黄土路堑高边坡的滑裂面概化为"抛物线"形,推导出其稳定性分析表达式,建立特殊滑裂面快速搜索的方法。实际检验表明,该方法弥补了其他分析方法的不足,更符合实际。The characteristics of high cutting loess slope determine the special character of its siding surface when it is in unstable condition. It is discovered that the sliding surface on the section along slope shows L-shape. There is a big difference between calculation result and the real situation when computing by the conception of traditional salty coefficient. The mathematic method is used to simplify the sliding surface of high loess slope as ＂parabola＂ shape, the formula for stability analysis is educed, and the method for quickly searching the special silding surface is established. The aplication results show that this method can overcome the disadvantage of other methods.

关 键 词：黄土高边坡 抛物线形滑裂面 稳定性分析方法 

分 类 号：P931.2[天文地球—自然地理学]