岗丘谷地弃土场倒葫芦形滑坡原因分析及处治措施  

Analysis of the Causes and Treatment Measures for a Gourd-shaped Landslide in a Spoil Ground of Ridges and Valleys

作　　者：曹禄来 瞿帅 万红军 余鹏琪 陈舒阳 CAO Lulai;QU Shuai;WAN Hongjun;YU Pengqi;CHEN Shuyang(Transfigure Design Co.,Ltd.,Changsha 410000,China;Hunan Provincial Communications Planning,Survey&Design Institute Co.,Ltd.,Changsha 410000,China;Fuzhou Gandong Highway Design Institute Co.,Ltd.,Fuzhou 344000,Jiangxi,China;School of Civil Engineering,Central South University of Forestry and Technology,Changsha 410004,China)

机构地区：[1]创辉达设计股份有限公司,长沙410000 [2]湖南省交通规划勘察设计院有限公司,长沙410000 [3]抚州赣东公路设计院有限公司,江西抚州344000 [4]中南林业科技大学土木工程学院,长沙410004

出　　处：《路基工程》2025年第1期213-218,共6页Subgrade Engineering

基　　金：国家自然科学基金(42007419);湖南省自然科学基金(2020JJ5981)。

摘　　要：针对湖南省某高速公路已发生倒葫芦形滑坡险情的弃土场,通过现场勘察并采用极限平衡方法对弃土场的成因机制和稳定性进行分析。结果表明:坡体滑动的主要原因是弃土场坡脚挡墙嵌固深度及抗滑力不足;建议在弃土场挡墙前增设抗滑桩,桩与挡墙间采用钢筋混凝土填充密贴;设置完善的截排水体系,将弃土场内地表水引排至坡体之外,对现有挡墙墙背增设反滤层,疏通并增加现有墙身泄水孔。处治措施实施后,取得了预期的良好效果。For a spoil ground of an expressway in Hunan Province where a landslide has occurred,this article analyzes the cause mechanism and stability of the spoil ground through on-site investigation and limit equilibrium method.The results show that the main cause of slope slide is anchoring depth and anti-sliding capability of the retaining wall at the toe are insufficient.It is suggested to add anti-sliding piles in front of the retaining wall,and filled between the piles and retaining wall with reinforced concrete;set up a drainage system to divert surface water in the spoil ground away from the slope;add an inverted filter behind the existing retaining wall and dredge and increase existing drainage holes in the wall.The treatment measures have achieved good expected results.

关 键 词：公路弃土场 滑坡失稳 原因分析 截排水 经济比选 加固处理 稳定性 

分 类 号：U416.165[交通运输工程—道路与铁道工程]