本文選題：紅層 + 路塹邊坡�。� 參考：《煤田地質與勘探》2017年02期

【摘要】：四川盆地紅層分布廣泛,其特殊的工程特性常導致嚴重的地質災害。通過分析成仁高速文宮連接線邊坡的變形破壞特征,得出邊坡在開挖和降雨的影響下破壞機制為蠕滑—拉裂。進一步用FLAC3D進行數(shù)值分析,顯示開挖卸荷和降雨影響導致滑坡災害,其后緣發(fā)生拉裂破壞,并引發(fā)滑坡前部發(fā)生剪切滑移破壞。針對該類型的邊坡,開挖后應對路塹以上部分及時采取加固措施,避免降雨入滲軟化土體,加劇滑坡變形破壞。
[Abstract]:The red beds in Sichuan Basin are widely distributed and their special engineering characteristics often lead to serious geological disasters. By analyzing the deformation and failure characteristics of Chengren high-speed Wengong connecting line slope, it is concluded that the failure mechanism of slope under the influence of excavation and rainfall is creep and tension crack. Further numerical analysis with FLAC3D shows that excavation unload and rainfall influence lead to landslide disaster, and lead to shear slip failure at the front of the landslide. For the slope of this type, reinforcement measures should be taken in time after excavation to avoid rainfall infiltration to soften soil mass and aggravate landslide deformation and destruction.
【作者單位】： 地質災害防治與地質環(huán)境保護國家重點實驗室(成都理工大學);四川蜀通巖土工程公司;
【分類號】：U412.22;P642.22

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