某岩溶区公路岩土滑坡形成机理与治理

发布时间：2018-02-20 00:44

  本文关键词： 滑坡 形成机理 稳定计算 破碎灰岩 降雨　出处：《煤田地质与勘探》2017年01期 　论文类型：期刊论文

【摘要】：灰岩区复杂的岩体和土体条件引发频繁的滑坡,严重影响了岩溶区高速公路的建设和运营。以某高速工程典型的岩土双区滑坡为例,进行岩溶区滑坡机理研究,结果表明,岩土体及地形是内因,路堑开挖是外因,强降雨是诱因,滑坡机制概括为开挖应力释放—降雨推移(Ⅰ区土体)—牵引(Ⅱ区岩体)。通过极限平衡法的滑坡稳定性分析,卸载后滑坡达到了基本稳定,但是在降雨工况下,滑坡依然处于不稳定状态。针对这种滑坡特殊成因,采用以抗滑桩为主的综合分区治理滑坡方案,处治效果良好,具有降低造价,加快施工进度等优势。
[Abstract]:The complex rock mass and soil conditions in limestone area cause frequent landslides, which seriously affect the construction and operation of expressway in karst area. Taking the typical rock and soil landslide in a high speed project as an example, the mechanism of landslide in karst area is studied. Rock, soil and topography are internal causes, cutting excavation is external cause and heavy rainfall is the inducement. The landslide mechanism is summarized as excavation stress release-rainfall movement (area 鈪，

本文编号：1518366