隧道内接触网预埋槽道定位技术研究

Research on the Positioning Technology of the Embedded Groove of the Overhead Contact Network in the Tunnel

现阶段国内铁路隧道接触网悬挂主要运用后植化学锚栓和预埋槽道两种安装方式;近几年已规划的铁路均在采用预埋槽道,预埋槽道可靠性高,滑槽调节余量大,是由站前隧道专业进行施工预埋,存在接口问题,由于站前隧道专业对槽道相应位置功能不是很了解,容易出现误差过大、漏埋、埋错等问题,预埋槽道与隧道二衬是整体成型,一旦出现问题难以整改,本文对近年来铁路隧道内接触网预埋槽道施工定位技术进行了研究,有一定的参考价值。

At present,there are two main installation methods for the catenary suspension of railway tunnels in China:post planting chemical anchor bolts and pre embedding channels.In recent years,all planned railways have adopted pre buried channels,which have high reliability and large adjustment allowance for sliding channels.They are constructed and pre buried by the station tunnel specialty,and there are interface problems.Due to the station tunnel specialty's lack of understanding of the corresponding position and function of the channels,it is easy to encounter problems such as large errors,omissions,and errors.The pre buried channels and tunnel secondary lining are formed as a whole,and once problems occur,they are difficult to rectify.This article has conducted research on the positioning technology for the construction of pre buried grooves in railway tunnels in recent years,which has certain reference value.