浅变质岩系高边坡稳定性快速评价方法研究  

Research on Low-grade Metamorpfic Rock Engineered High Slope Stability Quick Analysis

作　　者：吴嘉丞[1] 方理刚[1] 张久长[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《公路工程》2009年第6期43-46,共4页Highway Engineering

摘　　要：介绍了岩质工程边坡稳定性分析中常用的几种方法,并以在建的厦蓉高速公路贵州段工程高边坡为研究对象,利用赤平极射投影法对边坡勘测所得的大量结构面数据进行统计分析,对其稳定性给予了初步定性的判断。同时还介绍了反分析、试验和经验法等几种获取岩质边坡力学参数c、φ值的方法。结合初步分析结果和已确定的力学参数,再利用不平衡推力传递法定量地计算分析该边坡的稳定性,最后将其结果与数值模拟分析的结果进行比对,尝试提出一种建立岩质边坡稳定性快速评价体系的思路。This article generally introduced several kinds of prevalent method of rock engineered high slope stability analysis and investigated a high slope in Guizhou province,which is on the expressway between Chendu and Xiamen. The mapping principle of stereographic projection was applied to calculate and analyze much discontinuity data which is surveyed from the slope, and preliminarily estimate its stability in quality. The article also introduced some method of getting rock slope mechanical parameter, such as back analysis, test and experiential method. On the basis of the first analysis results and the confirmed mechanical parameter, the slope stability was ascertained quantitatively by residual thrust method. Moreover,compared with the results got from the finite element analysis,it try to put forward a thought about founding a rock engineered high slope stability analysis system.

关 键 词：稳定性分析 赤平极射投影 反分析 岩体分级 不平衡推力传递法 

分 类 号：U416.14[交通运输工程—道路与铁道工程]