广河高速公路运营阶段路堑滑坡应急抢险治理分析

发布时间：2018-02-27 03:29

本文关键词： 路堑滑坡监测成因分析治理设计变更　出处：《华南理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：广东省土地总面积的57%以上是山地和丘陵，省内的高速公路路堑边坡较多。边坡的稳定性直接影响高速公路施工和运营的安全。由于地质现象的隐蔽性，在边坡开挖前很难准确的预测开挖后坡体的地质情况，受到勘察资料的限制，高速公路边坡防护设计常常与地质条件不符。地质灾害，特别是工程活动引起的地质灾害，有一个逐步暴露的过程，公路开挖引起的边坡失稳就是一个逐步暴露的过程。广河高速公路K95、K97路堑滑坡位于广州至河源高速公路惠州段，由修路开挖边坡后多次垮塌发展而成。本文通过多次的现场勘察，详细研究了边坡病害发展及治理历史。从地层岩性、地质结构、水文地质、人工活动等方面分析了滑坡的成因。通过现场踏勘和监测数据的分析，确定了滑坡滑面位置和滑动方向，并针对性提出了合理的治理方案。其中，K95滑坡进行了两次变更设计，K97滑坡通过方案比选选定了最优方案。K95、K97路堑滑坡的成功治理，，对广东地区类似路堑滑坡的治理提供了有益的经验。
[Abstract]:More than 57% of the total land area in Guangdong Province is mountainous and hilly, and there are more highway cutting slopes in the province. The stability of the slope directly affects the safety of highway construction and operation. It is difficult to accurately predict the geological condition of slope body after excavation before excavation. Limited by the survey data, the slope protection design of expressway is often not in accordance with geological conditions. Geological hazards, especially geological disasters caused by engineering activities, are very difficult to predict. There is a gradual exposure process, the slope instability caused by highway excavation is a gradual exposure process. The K95C97 cutting landslide of Guanghe Expressway is located in Huizhou section of Guangzhou-Heyuan Expressway. The development and treatment history of slope diseases are studied in detail. The causes of landslide are analyzed from the aspects of stratigraphic lithology, geological structure, hydrogeology and artificial activities. The position and direction of landslide slide surface are determined, and a reasonable treatment scheme is put forward. It provides beneficial experience for the treatment of similar cutting landslide in Guangdong area.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U418.55

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