Slope of the first domestic existing pit-Foding Palace mine pit under static and seismic condition were simulated and analyzed respectively by two dimensional finite element, some results have been obtained: under static and seismic of cutting and reinforcement with anchor cable (rod) conditions, the maximum displacement occurs on the slope top and surface where there are fill, residual soil and
... [Show full abstract] highly weathered rock; the maximum stress occurs in the deep inside slope, the maximum shear stress occurs at the slope toe and on rock and soil interface; The acceleration response is enlarged along with the slope height, surface soil acceleration response has been significantly enlarged, the maximum acceleration response occurs at the edge of slope top. Under the limit state, the generalized plastic strain area concentrates on top fill, on surface broken moderate weathered rock, on rock and soil interface, and is tend to extend to the toe. Under static reinforcement condition, compared with static cutting condition, displacements decrease by 6%~67%, slope safety factors increase by 51%~114%, which show strong strengthening effect of anchor cable (rod). Under seismic condition, compared with small earthquake, maximum displacement under major earthquake increases by 260.0% maximally. Compared with the static case, main stresses under seismic condition increase by 145.8% maximally, shearing stresses increase by 362.5% maximally; Earthquake has strong effects on slope stability, the safety factors under major earthquake reduce by 38.3% maximally. Cable (rod) reinforcement effect and earthquake effect on slope acceleration, displacement, stress and safety factor can provide a reference for other similar projects. ©, 2015, Editorial Office of China Civil Engineering Journal. All right reserved.
