渗流条件下具有张裂缝边坡的稳定性分析_邓东平.pdf

44 1 () Vol.44 No.1 2013 1 Journal of Central South University (Science and Technology) Jan. 2013 ( 410075) ()() 2 3 2 () TU441 A 1672−7207(2013)01−0294−09 Stability analysis of slope with tensile crack under condition of seepage DENG Dongping, LI Liang (School of Civil Engineering, Central South University, Changsha 410075, China) Abstract: To study stability of slope with tensile crack during seepage, flow nets were simplified reasonably, and two methods, i.e taking soil body (total stress method) and soil skeleton (effective stress method) as research object, were used. Based on three kinds of sliding surface, including linear, circular and arbitrary curve, formulas for calculating factor of safety (FOS) were derived into slopes with shape of broken lines and steps. Through analyzing some examples, the similarities and differences of these methods were compared, and the effects of crack location and water level of crack on slope’s stability were studied. The results show that the FOS calculated by using linear sliding surface is the biggest, and that calculated by using arbitrary curve sliding is close, but smaller than th