水压诱发运营高铁隧道区间无砟轨道上拱整治技术

Preventive and Renovating Techniques Against the Water-Pressure-Induce Arching of the Ballastless Tracks of High-Speed Railway Tunnels

运营高铁隧道区间出现轨道上拱轻者会影响铁路运输,重者威胁列车运营安全,整治施工难度大、风险高。结合工程实例分析排水不畅等多种原因造成无砟轨道水压力上拱,介绍了采取的排水降压、注浆加固和道床锚固等多种整治措施。整治完成后,轨道结构工作状态良好。

When a high-speed railway tunnel is being operated,even a slight camber occurring on the track will affect the railway transportation,and if a serious camber occurred on the track,it would threaten the safe operation of the train.The renovation of such cambers on the track of railways is very difficult and high in risk.Upon the basis of analyzing the many factors that may cause draining to be inhibited and the ballastless tracks to camber as a result of the rise in water pressure in quite a few actual projects,put forward in the present paper are many renovation technical measures such as draining water and lowering water pressure,grouting to consolidate the sub-grade,anchoring the railway roadbed and the like.After being renovated in the way that mentioned-above,the track structure is found to be in good condition.