Study on dynamic stability of dump slope based on the dissipation of pore pressure

In order to overcome the limitations of the stability calculation method and the problem that the stability control technology of loess basement dump is not sufficient enough or difficult to quantify,through the pore pressure dissipation test,the influence law between the pore pressure,the dissipation rate and the dissipation time is obtained. Moreover,a method based on the limit equilibrium method and dissipation law of pore pressure is proposed to calculate the dynamic stability coefficient of loess basement dump. Based on the algorithm proposed,the original static stability control measures of loess basement dump are optimized,and the dynamic stability control measures including “segmen- ted dump,control strength,region marching,adjustment procedure,monitoring and control,increase dump capacity” are proposed. The results have been applied and popularized in the same type of dump field.