沁樊公路K3滑坡稳定性分析及整治措施研究  

作　　者：张雄伟 赖国泉 庞伟军 

机构地区：[1]中铁西北科学研究院有限公司,兰州730000

出　　处：《科技创新与应用》2024年第3期140-144,共5页Technology Innovation and Application

摘　　要：以山西省沁水县境内沁樊公路K3滑坡为例,在现场地质调绘、勘察和地表变形监测的基础上,分析该滑坡产生的工程地质条件及灾害发育特征,评价其在不同工况下的稳定性,并提出治理措施。结果表明,该滑坡是由路堑开挖卸荷且连续降雨影响下老滑坡前部复活形成。滑面埋深14.5~18.5m,滑体成分以粉质黏土、块碎石土为主,属牵引式滑坡,目前堑坡已发生滑动变形,整体处于欠稳定-不稳定状态。针对该滑坡特点,提出支挡与排水并重的治理理念,具体采用桩板墙支挡,坡脚设仰斜排水孔疏排地下水,辅以坡脚挡墙、坡面防护及地表截排水措施。工程实施后,彻底根治该滑坡,可为老滑坡地段的公路开挖提供借鉴和参考。Taking the K3 landslide of Qinfan Highway in Qinshui County,Shanxi Province as an example,on the basis of on-site geological mapping,investigation and surface deformation monitoring,the engineering geological conditions and disaster development characteristics of the landslide are analyzed,and its stability under different working conditions is evaluated,and the control measures are put forward.The results show that the landslide is revived by the unloading of cutting excavation and continuous rainfall.The buried depth of the sliding surface is 14.5~18.5 m,and the sliding body is mainly composed of silty clay and macadam soil,which belongs to a traction landslide.At present,the cutting slope has undergone sliding deformation and the whole is in an understable-unstable state.According to the characteristics of the landslide,the treatment concept of attaching equal importance to retaining and drainage is put forward,which adopts pile-plate wall support,inclined drainage hole at the foot of the slope to drain groundwater,supplemented by the retaining wall at the foot of the slope,slope protection and surface drainage measures.After the implementation of the project,the landslide has been completely cured,which can provide reference for highway excavation in the old landslide area.

关 键 词：路堑边坡 开挖卸荷 连续降雨 稳定性 整治措施 

分 类 号：U418.55[交通运输工程—道路与铁道工程]