Analysis on Seepage Characteristics and Varied Critical Slip Surface of Ionic Rare Earth Mine Slope Under Different Rainfall Intensities
A slope of ionic rare earth mine was taken to study the variation of pore water pressure in the slope during and after rainfall events with different rainfall intensity,and the varied critical slip surface during these two periods of time was also studied by using the finite element Morge nstern-Price method.The results show that the rainfall intensity is a significant factor affecting the pore water pressure of shallow slope of ionic rare earth mine.The hysteresis property of rainwater infiltration into the slope is the internal reason for hidden risk of potential slope instability after rainfall events.The greater rainfall intensity will lead to faster formation of the 289 slip surface,higher peak value of greatly changed safety factor,as well as longer influence time.It is proposed for the first time that the development of ionic rare earth mine slope under rainfall conditions may experience four stages:safety,drastic internal variation,high landslide susceptibility,and relative safety.
ionic rare earth mineslope stabilitypore water pressurenumerical simulationslip surfacerainfallseepage characteristics
NETL
NSTL
万方数据
