LIU Hua-li, GONG Yun-xiang, LI Hong-wei, et al. Study of slope stability under blasting vibration based on distribution of normal stress over slip surface[J]. 2013, 34(S1).
LIU Hua-li, GONG Yun-xiang, LI Hong-wei, et al. Study of slope stability under blasting vibration based on distribution of normal stress over slip surface[J]. 2013, 34(S1).DOI:
The initial distribution of normal stresses over the slip surface is assumed
which is then modified by a Lagrangian function involving two parameters to satisfy the complete equilibrium conditions of the sliding body. Reliability of the proposed method was verified and relation between pseudo-static coefficient under blast seism and safety factor of on slope was explained by using calculatiexamples. Computed results in some engineering cases show that the horizontal and vertical dynamic loads as well as their combined dynamic load make the greatest impact on the safety factor of slope stability. When horizontal dynamic load pseudo-static coefficient is added 0.05 from 0 to 0.3
the safety factors are reduced 6.65% -23.54 %. When vertical dynamic load pseudo-static coefficient is added 0.05 from 0 to 0.3
the safety factors are reduced 1.18 % -2.52 %. The combined load action direction has also some impact on the slope stability.