文麻高速公路滑坡机制与防治措施研究  

STUDY ON THE LANDSLIDE MECHANISM AND CONTROL MEASURES OF WENSHAN-MALIPO HIGHWAY

作　　者：黎华林[1] 周小雄[1] 向锐 郑志勇[1] LI Hua-in;ZHOU Xiao-xiong;XIANG Rui;ZHENG Zhi-yong(CCCC Second Highway Consultants Co.,Ltd.,430058,Wuhan,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉430058

出　　处：《建筑技术》2023年第20期2486-2492,共7页Architecture Technology

摘　　要：文麻高速公路YK 14+580~YK 14+740段在路堑开挖初期即对边坡施加了以抗滑桩为主的加固措施,但上部坡体仍存在较大滑坡风险,产生了大量裂缝。因此,通过现场勘查和现场监测等方法对滑坡体进行了圈定,采用定性分析和定量计算方法开展了滑坡机制分析,并提出了相应的防治措施。结果表明,文麻高速YK 14+580~YK 14+740段坡体可圈定出H1、H2和H3共3个滑坡区域,分别属于大型中层牵引式岩土体滑坡、中型中层牵引式岩土体滑坡和小型浅层牵引式土体滑坡;古滑坡复活、地形陡倾、岩土体破碎软弱、雨水入渗和人类工程活动是诱发滑坡形成的主要因素;采用长抗滑桩+长锚索+截排水沟的方式可取得有效的滑坡防治效果。At the early stage of cutting excavation,reinforcement measures,mainly using antislide pile,were applied to support the slope of the section YK14+580~YK14+740 of Wenshan-Malipo highway.However,there is still a rick of landslide on the upper slope,resulting in a large number of cracks.Therefore,the landslide zones had been delineated through field investigation,and the landslide mechanism had been studied through qualitative analysis and quantitative calculation method,and corresponding prevention measures had been proposed.The results show that H1,H2,and H3 landslide zones can be delineated of the section YK 14+580~YK 14+740 of Wenshan-Malipo Highway,and they belong to large-level middle layer traction rock-soil landslide,middle-level middle layer traction rock-soil landslide and small-level middle layer traction soil landslide.The reactivation of ancient landslides,steep terrain,weak and low strength of rock and soil,rainwater infiltration,and engineering activities are the main factors to induce the formation of landslides.The method of combined long anti-slide piles,long anchor cable and intercepting and drainage ditch can achieve effective landslide prevention and control effects.

关 键 词：文麻高速公路 稳定性分析 滑坡治理 抗滑桩 

分 类 号：TU74[建筑科学—建筑技术科学]