【摘要】：萬源市花樓鄉(xiāng)董家梁滑坡屬于典型的四川盆地盆周山區(qū)紅層地層滑坡。通過現(xiàn)場調(diào)繪、工程地質(zhì)勘探等手段,揭示該滑坡為強大水壓力起主導作用的滑動變形破壞。根據(jù)滑坡滑動后的空間形態(tài)及殘留體特征,將滑坡劃分為滑坡啟動區(qū)(A區(qū))、滑坡西側(cè)推擠滑動區(qū)(B區(qū))、滑坡東側(cè)牽引滑動區(qū)(C區(qū))三個部分。研究表明滑坡啟動始于地下水活動強烈的中部區(qū)域(A區(qū)),水壓力隨雨量增加而急劇增長,該區(qū)巖體受水壓力推擠沿層面及側(cè)裂結(jié)構(gòu)面發(fā)生剪切破壞,形成楔形體滑動,同時牽引B區(qū)和C區(qū)巖體產(chǎn)生推擠、拉張、牽引滑動破壞。
[Abstract]:Dongjialiang landslide in Hualou Township, Wanyuan City, belongs to the typical red formation landslide in the mountainous area around the basin of Sichuan Basin. By means of field drawing and engineering geological exploration, it is revealed that the landslide is the sliding deformation failure which plays a leading role in the strong water pressure. According to the spatial shape and residual characteristics of the landslide after sliding, the landslide is divided into three parts: the start-up area (area A), the pushing area (area B) on the west side of the landslide and the traction area (area C) on the east side of the landslide. The results show that the landslide starts in the central area (area A) with strong groundwater activity, and the water pressure increases sharply with the increase of rainfall. The rock mass in this area is pushed by water pressure along the plane and the lateral crack structure plane, resulting in wedged sliding, and at the same time traction B and C area rock mass produces push extrusion, tension and traction sliding failure.
【作者單位】： 成都理工大學地質(zhì)災害防治與地質(zhì)環(huán)境保護國家重點實驗室;西南科技大學環(huán)境與資源學院;
【基金】：四川省科技支撐技計劃項目(2014FZ0009)~~
【分類號】：P642.22

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