铁路路基护筒支撑旋喷纵向加固技术研究  

Research on Longitudinal Reinforcement Technology of Rotary Jet with Pile Casing Support for Railway Subgrade

作　　者：刘景宇 张千里[2] 陈锋[2] 李泰灃 刘振宇 LIU Jingyu;ZHANG Qianli;CHEN Feng;LI Taifeng;LIU Zhenyu(China Academy of Railway Science,Beijing 100081,China;State Key Laboratory of Track Technology of High-speed Railway,China Academy of Railways Science,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院,北京100081 [2]中国铁道科学研究院高速铁路轨道技术国家重点实验室,北京100081

出　　处：《铁道建筑》2018年第12期83-86,共4页Railway Engineering

基　　金：中国铁道科学研究院基金(2016YJ025)

摘　　要：针对目前既有铁路路基加固的缺点,综合高压旋喷技术和水平定向钻进技术的优点,提出沿线路纵向且不干扰行车的既有铁路路基加固技术。采用护筒支撑同步跟进的方式对路基进行旋喷加固,能够避免高压泥浆对道砟和基床表层的破坏,从而达到路基浅部加固的目的。通过定向钻进技术,准确跨越路基病害区段,对病害区进行精准加固。详细叙述了该加固技术的设计方法以及加固工艺。现场试验表明加固效果良好。In view of the shortcomings of existing railway subgrade reinforcement technology,the advantages of high-pressure rotary jet technology and horizontal directional drilling technology are integrated,and the existing railway subgrade reinforcement technology along the line without disturbing the operation is proposed.Rotary jet is used with the method of pile casting to support the synchronous follow-up.It may avoid the damage of the high-pressure mud to the ballast and the surface of the bed,so as to achieve the purpose of the shallow reinforcement of the subgrade.Through the directional drilling technology,the diseased area is accurately spanned and reinforced.In this paper,the design method and the reinforcement technology are demonstrated in details.The f ield test verif ied the reinforcement effect.

关 键 词：重载铁路 路基加固 纵向加固 路基非开挖加固 高压旋喷 护筒 

分 类 号：U239.4[交通运输工程—道路与铁道工程] U213.15