Abstract
Based on the analysis of several objective functions, a new method was proposed. Firstly, the feature of the inclination curve was analyzed. On this basis, the soil could be divided into several blocks with different displacements and deformations. Then, the method of the soil division was presented, and the characteristic of single soil block was studied. The displacement of the block had two components: sliding and deformation. Moreover, a new objective function was constructed according to the deformation of the soil block. Finally, the sensitivities of the objective functions by traditional method and the new method were calculated, respectively. The result shows that the new objective function is more sensitive to mechanical parameters and the inversion result is close to that obtained by the large direct shear apparatus. So, this method can be used in slope back analysis and its effectiveness is proved.
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