摘要
以某高速公路隧道为研究对象,借助物探、钻探、监测等手段研究了该隧道-多滑面滑坡斜交体系稳定性及综合处治技术.研究结果表明:该滑坡存在3 个滑面,第 2 滑面稳定性最低,为主滑面,暴雨工况下该滑面处于失稳状态;对于正在变形的隧道-多滑面滑坡斜交体系,提出了分区、分期治理,在监测的基础上先采取应急工程,且应急工程与永久工程、洞内与洞外处治相结合的综合防治思路.监测数据表明,该隧道-多滑面滑坡斜交体系通过坡脚反压、钢管群桩、抗滑桩、提高衬砌支护强度及洞内反压、护拱等综合措施处治后,坡体及结构均处于安全状态.
Abstract
Taking a highway tunnel as the research object,by means of geophysical prospecting,drilling and monitoring,the stability and comprehensive treatment technology of the tunnel and multi-sliding-surface-landslide oblique system are studied.The results show that,there are three sliding surfaces in the landslide,and the stability of the second sliding surface is the lowest,which is the main sliding surface,the landslide is in an unstable state under rainstorm conditions.For the deformed tunnel and multi-sliding-surface-landslide oblique system,the treatment idea of zoning and phased treatment,taking emergency engineering first on the basis of monitoring,combining emergency engineering with permanent engineering,and taking comprehensive prevention and control measures combining various means is put forward.The monitoring data show that the landslide and structure of the tunnel and multi-sliding-surface-landslide oblique system are in a safe state after being treated by comprehensive measures such as back pressure at the landslide toe,steel pipe pile group,anti sliding pile,back pressure in the tunnel,double arch and strengthening lining support parameters.
维普
万方数据