铁路顺层路堑边坡稳定性分析方法研究  

Study on Analysis Method for Stability of Bedding Cutting Slope Along Railway

作　　者：董捷[1] 宋绪国[1] 许再良[1] 

机构地区：[1]铁道第三勘察设计院集团有限公司,天津300142

出　　处：《铁道工程学报》2013年第3期19-23,共5页Journal of Railway Engineering Society

基　　金：国家自然科学基金资助(NO.51108313);中国博士后科学基金面上资助(NO.20100470776);中国博士后科学基金特别资助(NO.2012T50215);铁道第三勘察设计院集团有限公司科技开发项目(NO.721245)

摘　　要：研究目的:铁路岩质边坡稳定性分析一直是山区铁路工程建设最为关心的难点问题之一。近年来,顺层岩质路堑边坡失稳造成的工程事故屡有发生,滑动面的位置往往不能够准确定位,缺乏一套科学合理的评价方法。为此,提出一种能够考虑滑体沿不同岩层界面及纵向裂隙发生滑动的稳定性分析方法。研究结论:采用一种基于平面坐标系统的双向滑动面搜索模式,该模型考虑了铁路路堑边坡的多级平台几何特征和岩层产状,逐一对潜在的滑动体进行分析,可实现对顺层岩质边坡最小安全系数的搜索过程。同时,为提高铁路路基工程技术人员对岩质路堑边坡稳定性的分析效率,采用C#作为开发工具,编制稳定性分析的相关软件,首次实现顺层岩质边坡双向结构面自动搜索的功能。Research purposes ： The stability analysis of the railway rock slope is one of the most concerned problems in railway construction in mountain area. In recent years, the engineering accidents caused by the unstability of the bedding rock cutting slope have occurred frequently because the position of the sliding surface can＇t be accurately allocated due to being short of the scientific and rational evaluation method. This paper presents a analysis method for the stability of the sliding body along the different rock boundaries and longitudinal cracks. ／Research conclusions：A bi - direction searching model based on plane coordinate system is established. This model considers the geometric features of the multiple level platforms of the cutting slope and the rock stratum attitude, and it can be used to analyze the hidden sliding body one by one and search for the minimum safety coefficient about slope stability. In addition, in order to improve the analysis efficiency of the stability of the rock cutting slope, an professional software is developed by using C # programming tools to realize the automatic searching for the bi - directional structure surface of the bedding rock slope.

关 键 词：顺层 边坡 双向搜索 稳定性 模型 

分 类 号：TU457[建筑科学—岩土工程]