TY - JOUR
A2 - Vannucci, Paolo
AU - Lin, Hang
AU - Zhong, Wenwen
AU - Xiong, Wei
AU - Tang, Wenyu
PY - 2014
DA - 2014/07/23
TI - Slope Stability Analysis Using Limit Equilibrium Method in Nonlinear Criterion
SP - 206062
VL - 2014
AB - In slope stability analysis, the limit equilibrium method is usually used to calculate the safety factor of slope based on Mohr-Coulomb criterion. However, Mohr-Coulomb criterion is restricted to the description of rock mass. To overcome its shortcomings, this paper combined Hoek-Brown criterion and limit equilibrium method and proposed an equation for calculating the safety factor of slope with limit equilibrium method in Hoek-Brown criterion through equivalent cohesive strength and the friction angle. Moreover, this paper investigates the impact of Hoek-Brown parameters on the safety factor of slope, which reveals that there is linear relation between equivalent cohesive strength and weakening factor D. However, there are nonlinear relations between equivalent cohesive strength and Geological Strength Index (GSI), the uniaxial compressive strength of intact rock σci, and the parameter of intact rock mi. There is nonlinear relation between the friction angle and all Hoek-Brown parameters. With the increase of D, the safety factor of slope F decreases linearly; with the increase of GSI, F increases nonlinearly; when σci is relatively small, the relation between F and σci is nonlinear, but when σci is relatively large, the relation is linear; with the increase of mi, F decreases first and then increases.
SN - 2356-6140
UR - https://doi.org/10.1155/2014/206062
DO - 10.1155/2014/206062
JF - The Scientific World Journal
PB - Hindawi Publishing Corporation
KW -
ER -