Research on the laws of surface settlement caused by excavation and pore water pressure dissipation in open-pit mine slopes
In this paper,the surface settlement caused by excavationand pore water pressure dissipation of open-pit slope is calculated and analyzed by theoretical analysis and numerical simulation,and the subsidence rule of open-pit slope top under the influence of both factors is obtained.It is found that the slope subsidence caused by excavation and unloading is more uniform,and the pore water pressure dissipation is more likely to induce the uneven settlement of the open-pit slope.By comparing the calculation results of theoretical model,numerical simulation and monitoring results in the process of site construction,it is found that the calculation results are in good agreement with the actual monitoring results in settlement trend and settlement amount.The research results have a certain reference value for promoting the practical application of slope settlement theory and numerical simulation in open pit mine.
open-pit slopesurface settlementexcavationpore water pressurenumerical simulation
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