作　　者： ; ; ; ;

机构地区： 中南大学

出　　处： 《沈阳工业大学学报》 2012年第2期231-235,共5页

摘　　要： 为了研究岩土体抗剪强度参数对边坡稳定性的影响,通过理论推导和Bishop极限平衡法计算,分别改变岩土体的粘结力c和内摩擦角,探讨边坡安全系数和滑动面的变化.结果表明:粘结力或内摩擦角改变时,边坡的安全系数将发生变化,而滑动面的变化受函数ηc的影响,ηc与粘结力和内摩擦角有关.当ηc为定值时,滑动面不随抗剪强度参数的变化而变化;当ηc增大时,边坡的滑动面从近坡面逐渐向边坡内部移动;反之,ηc减小时,边坡的滑动面从边坡内部向近坡面移动.研究结果为边坡稳定性分析的理论和实践研究提供了参考. In order to study the effect of the shear strength parameters of rock and soil on the stability of side slope, both theoretical derivation and calculation with Bishop limit equilibrium method were adopted to change the cohesive force c and internal friction angle Ф of rock and soil, respectively. And the variation of both safety factor and sliding surface of side slope was discussed. The results show that when the cohesive force or internal friction angle changes, the safety factor of side slope will change. However, the variation of sliding surface is affected by the function ηcФ,which is related to the cohesive force and internal friction angle. When ηcФ is a constant value, the sliding surface will not change with the variation of shear strength parameters. When ηcФ increases, the sliding surface of side slope will move from the near slope surface to the inside of side slope gradually. Inversely, when ηcФ decreases, the sliding surface of side slope will move from the inside of side slope to the near slope surface. The present results can provide the references for the theoretical and practical investigation in the stability of side slope.

关 键 词： 边坡 稳定性 安全系数 滑动面 粘结力 内摩擦角 强度参数 极限平衡法

领　　域： [建筑科学] [建筑科学]