本文選題：滑坡 + 順向邊坡��； 參考：《長江科學院院報》2017年04期

【摘要】：傾倒-變形多發(fā)生在逆向層狀邊坡內(nèi),但在近幾年工程勘查中發(fā)現(xiàn),陡傾順向邊坡也存在該種失穩(wěn)模式,研究其形成機制對正確評價工程邊坡的穩(wěn)定性有著重要意義。以西北黃河流域某水電站壩前右岸的Ⅲ~#滑坡為例,在地質勘察的基礎上,結合數(shù)值模擬和定性分析得出:滑坡的形成過程分為河谷下切、坡表卸荷,巖層發(fā)生傾倒-變形,滑移-拉裂3個階段,利用UDEC再現(xiàn)了滑坡的形成過程。利用有限元和離散元計算得到的結果互相吻合,證明了結論的合理性。
[Abstract]:Toppling and deformation often occur in reverse layered slopes, but in recent years, it is found that this kind of instability mode also exists in steep slope, and it is very important to study its formation mechanism to evaluate the stability of engineering slope correctly.Taking the landslide of the right bank in front of the dam of a hydropower station in the northwest Yellow River Basin as an example, on the basis of geological investigation, combined with numerical simulation and qualitative analysis, it is concluded that the forming process of the landslide is divided into valley cutting, slope surface unloading, rock strata toppling and deformation.The process of landslide formation was reproduced by UDEC in three stages of slip-tension fracture.The results obtained by finite element method and discrete element method are in agreement with each other, which proves the rationality of the conclusion.
【作者單位】： 成都理工大學地質災害防治與地質環(huán)境保護國家重點實驗室;
【基金】：國家自然科學基金項目(41072229)
【分類號】：TV221.2;P642.22
，

本文編號：1738048