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以某降雨发生蠕变的红粘土边坡为研究对象,通过快剪试验获取土体的抗剪强度指标,并结合实际情况建立相关计算模型,运用剩余推力法对所选的抗剪强度指标进行反算分析。考虑到土体滑坡面的均质和非均质情况,分别采用整体和分段反算的方法进行计算,结果表明与室内快剪试验所得到的抗剪强度指标是一致的;再者,由于红粘土边坡自身所具有的特性,降雨对于滑坡面模型的建立及边坡的破坏形式有着重要的影响,因此选择浅表层破坏作为该红粘土边坡的计算模型,研究表明该计算模型安全可靠
Taking the red clay slope creeping in some rainfall as the research object, the shear strength index of the soil was obtained by the quick shear test. The relevant calculation model was established according to the actual situation. The selected thrust shear strength index Back analysis. Considering the homogeneity and heterogeneity of the soil landslide, the whole and sectional backcalculation methods are used respectively to calculate the results. The results show that they are consistent with the shear strength index obtained from the indoor quick shear test. Furthermore, The characteristics of the red clay slope itself, the rainfall has an important impact on the establishment of the landslide model and the failure form of the slope, so choose the shallow surface damage as the calculation model of the red clay slope, the study shows that the calculation model is safe and reliable