娄衡高速公路红砂岩崩解实验及路堑边坡稳定性分析

发布时间：2018-04-06 22:31

本文选题：红砂岩　切入点：路堑边坡稳定性　出处：《长沙理工大学》2015年硕士论文

【摘要】：在众多边坡稳定性中,红砂岩边坡稳定性是建设过程中面临的一个大问题,红砂岩由于其经过风化作用过程中的差异性造成其不完全一样的特殊性质,含水量有差异的红砂岩形成其强度同样存在差别,在接触水后,会容易产生崩解,软化,当坡体开挖后,会产生稳定性能力不强现象,加上本文工程背景地处亚热带气候,温度、湿度等因素对于红砂岩的地下层岩石性质方面的影响会更加明显。本文以娄底至衡阳高速公路内的红砂岩路堑边坡为工程背景,通过对娄衡高速区域地形地貌、地层岩性和水文地质条件的调查研究,再结合该地区红砂岩特殊的工程地质特点,分析出红砂岩的岩性特征和内部存在的破坏机理,在此基础上,通过岩石耐崩解性实验掌握岩石的崩解数量、崩解指数、崩解时间和崩解状况,以此研究适合娄衡高速红砂岩路堑边坡的具体治理处治方案,加强路堑边坡的稳定性。通过本文的研究,为娄底至衡阳高速公路内的红砂岩路堑边坡问题提供一定的处治措施,以此提高边坡的稳定性,对日后的安全施工和经营维护打下良好的基础。
[Abstract]:Among the many slope stability, the stability of red sandstone slope is a big problem in the process of construction. Due to the difference in the process of weathering, the red sandstone is not exactly the same special property.The strength of red sandstone with different water content is also different. After contact with water, it is easy to collapse and soften. When the slope body is excavated, the phenomenon of weak stability will occur, and the engineering background of this paper is located in the subtropical climate.The effect of temperature and humidity on the rock properties of red sandstone is more obvious.In this paper, taking the red sandstone cutting slope in Loudi to Hengyang expressway as the engineering background, through the investigation and study of the landform, stratigraphic lithology and hydrogeological conditions of Louheng high-speed area, and combining with the special engineering geological characteristics of red sandstone in this area,The lithologic characteristics and internal failure mechanism of red sandstone are analyzed. On the basis of these, the quantity, index, time and condition of rock disintegration are obtained by rock disintegration resistance experiment.This study is suitable for Louheng high-speed red sandstone cutting slope treatment scheme to strengthen the stability of cutting slope.Through the research of this paper, it provides certain treatment measures for the red sandstone cutting slope in Loudi to Hengyang expressway, so as to improve the stability of the slope and lay a good foundation for the safe construction and operation and maintenance in the future.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U416.1

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