Estimation of rock mass mechanical parameters of an open-pit mine slope based on the Hoek-Brown criterion and analysis of slope stability

摘要

How to select scientific and reasonable mechanical parameters of rock mass is particularly important to evaluation of slope stability. Based on the collection of engineering geological data about a mine, and through detailed survey and analysis of the engineering geological conditions in the field, the Hoek-Brown strength criterion was used to estimate the rock mass strength parameters of this mine. Finally, a numerical simulation model for the open-pit mine slope was established; the finite difference method was employed for numerical calculation of the slope stability; the rule of changes in displacement field, plastic zone and shear strain was analyzed; the stability of open-pit mine slope was analyzed and evaluated. These provide a basis for design and safe production of the mine.