Analysis of Traction Landslide Treatment on a Complex Marble Slope of a Motorway in Eastern Europe
A finite element model of a 30-50 cm thick weak interlayer simulating the slip zone soil was established based on the traction engineering landslide of a motorway compound marble slope in Eastern Europe.The stability analysis of the step-by-step construction support of the landslide was carried out by the strength reduction method and compared with the traditional limit equilibrium method.The results demonstrate that the strength reduction method can initially identify the location of the slip surface based on the distribution of the plastic zone of the slope.This is then combined with the results of the geological investigation and displacement monitoring to determine the final slip surface location.The shear strength parameter of the slip surface is determined by inverse analysis of the slip zone soil layer.The strength reduction method yields slightly higher results than the limit equilibrium method.When the parameters of the slip zone soil are held constant,the stability coefficient of the strength reduction method for the construction condition is slightly lower than that of the limit equilibrium method,while that of the operational and seismic conditions is comparable to that of the limit equilibrium method.The operational and seismic stability coefficients are comparable with the limit equilibrium method.
motorwaycompound rock landslidefinite element strength reduction methodweak interlayerrocky landslide treatment
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