›› 2013, Vol. 34 ›› Issue (S1): 117-120.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of slope stability under blasting vibration based on distribution of normal stress over slip surface

LIU Hua-li1, GONG Yun-xiang1, LI Hong-wei1, ZHU Da-yong2   

  1. 1. Engineering Institute of Corps of Engineers, PLA University of Science and Technology, Nanjing 210007, China; 2. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China
  • Received:2012-06-01 Online:2013-08-30 Published:2014-06-09

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Abstract: 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.

Key words: mechanics of explosion, slope;stability, pseudo-static analysis;safety factor

CLC Number: 

  • TU 473
[1] MU Chao-min, QI Juan, XIN Kai. Interaction between blast wave and structure in highly saturated soil [J]. , 2011, 32(2): 429-434.
[2] MU Chao-min , QI Juan. Attenuation effects of cavity shape on blast wave in underground defense layer [J]. , 2011, 32(12): 3773-3779.
[3] MU Chao-min, REN Hui-qi, LI Yong-chi3, XIN Kai. Experiment study of explosion energy coupling coefficient with different burial depths in saturated soils [J]. , 2010, 31(5): 1574-1578.
[4] MU Chao-min，REN Hui-qi，LI Yong-chi1，XIN Kai. Propagation laws of blast wave in saturated soils with high saturation degree [J]. , 2010, 31(3): 875-880.
[5] LIU Zhang-jun, CHEN Fei, ZHOU Yi-hong. Stability evaluation of depth cutting slope in rock mass based on fuzzy probability method [J]. , 2008, 29(S1): 368-372.
[6] SUN Zong-jun ，CHI Yan-zhi ，LI Nai-yuan ，LIU Xiao-bin，. Stability analysis of high rock slope with FLAC [J]. , 2006, 27(S1): 737-740.
[7] FENG Yu-bo ，LI Nai-yuan ，CHI Yan-zhi ，LIU Xiao-bin,. Design and stability analysis of reinforced high rock slopes [J]. , 2006, 27(S1): 958-960.
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