垄茶复合岩层岩质边坡稳定性影响因素及破坏模式研究

Study on Factors Influencing the Stability and Failure Mode of Composite Rock Slope of Longcha

为了得出垄茶高速沿线复合岩层岩质边坡稳定性主要影响因素及破坏模式,进行了现场调研及室内试验,得出水大大降低边坡岩体的抗劈裂强度和抗剪切强度,较天然状态下抗劈裂强度降低55.7%,岩体粘聚力下降75%内摩角下降26%,复合结构面的结构面连续性﹑结构面表面状况及结构面充填物等3个方面对边坡稳定性的影响较大,总结得出水和多层软弱结构面是影响垄茶沿线边坡稳定性的主要因素,滑移-拉裂-剪断破坏是边坡最主要破坏模式。

To arrive at high way of Long Cha composite rock slope stability composite main faetom and failure modes, conducted a field investigation and laboratory, get that water greatly reduces the inten- sity of the anti-splitting rock slope and shear strength than natural state anti-splitting strength decreased by 55.7% ,the cohesion of rock fell 75 percent decrease in the friction angle of 26% ,surface continuity, the surface condition of the surface fillings and structure plane of structural surface have greate impaet on slope stability. In short water and muhilayer weak structural plane is the main factor affecting slope stabil- ity, slip-crack-cut slope destruction is the main failure mode.