贵州某高速公路滑坡形成机理及处治方案研究

Study on the formation mechanism and treatment schemeof landslide of an expressway in Guizhou

滑坡治理前,应该详细分析滑坡的形成机理及滑坡的危险性,从安全、经济等方面入手,采取合理措施对滑坡进行治理,到达治理的目的。不同滑坡形成机理各不相同,主要分为人为因素及自然因素两大类。以贵州某高速公路滑坡为例,该滑坡受到复式背斜等构造的影响,在重力长期影响下,岩体挤压严重,岩体破碎,且雨水下渗后改变了土体的抗剪强度等参数,使得滑坡失稳。通过计算滑坡剩余下滑力,最后采用抗滑桩+锚索+防排水措施对滑坡进行处治。

before slope treatment,the formation mechanism and the danger of landslide should be analyzed in detail,and reasonable measures should be taken to treat the landslide from the aspects of safety and economy,so as to achieve the purpose of governance.The formation mechanism of different landslides is different,which can be divided into two categories:human factors and natural factors.Take the landslide of an expressway in Guizhou as an example,the landslide is influenced by the structure such as the second test anticline and is under the long-term influence of gravity,The rock mass is seriously squeezed and broken,and the shear strength and other parameters of the soil mass are changed after the infiltration of rain water,which makes the landslide unstable.By calculating the residual sliding force of the landslide,the anti-slide pile,anchor cable and drainage measures are combined to treat the landslide.