本文關(guān)鍵詞： 滑坡 形成機理 穩(wěn)定計算 破碎灰?guī)r 降雨　出處：《煤田地質(zhì)與勘探》2017年01期 　論文類型：期刊論文

【摘要】：灰?guī)r區(qū)復(fù)雜的巖體和土體條件引發(fā)頻繁的滑坡,嚴(yán)重影響了巖溶區(qū)高速公路的建設(shè)和運營。以某高速工程典型的巖土雙區(qū)滑坡為例,進行巖溶區(qū)滑坡機理研究,結(jié)果表明,巖土體及地形是內(nèi)因,路塹開挖是外因,強降雨是誘因,滑坡機制概括為開挖應(yīng)力釋放—降雨推移(Ⅰ區(qū)土體)—牽引(Ⅱ區(qū)巖體)。通過極限平衡法的滑坡穩(wěn)定性分析,卸載后滑坡達到了基本穩(wěn)定,但是在降雨工況下,滑坡依然處于不穩(wěn)定狀態(tài)。針對這種滑坡特殊成因,采用以抗滑樁為主的綜合分區(qū)治理滑坡方案,處治效果良好,具有降低造價,加快施工進度等優(yōu)勢。
[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，

本文編號：1518366