浅析70 h穿越乌西Ⅲ场西端咽喉的施工方案

Analysis of the 70-hour Construction Plan for Crossing the Western Throat of Wuxi Ⅲ Field

本文以金阳路改扩建工程2-12.5 m框构桥下穿乌西站DI场西端咽喉区施工为例,乌西站作为西北地区最大的编组站,承担着西北地区主要货物编组、调车及接发车任务,全年处于业务繁忙期,经长达个月的方案研讨、报批,最终铁道部采纳本施工方案,且将施工等级定为级施工。其具体方案为h内间断性封锁乌西Ⅲ场西端咽喉线路、道岔,咽喉区全部封锁时间为36h,框构桥采用大开挖顶进工艺穿越乌西Ⅲ场西端咽喉区。

This project is the construction of Jinyang Road Reconstruction and Expansion Project under the 2〜12.5 m frame bridge under the throat area at the west end of Wuxi Station Ⅲ.Wuxi Station is the largest marshalling station in the northwest region and is responsible for the main cargo marshalling,The shunting and receiving and dispatching tasks are basically in the busy period throughout the year.After 6 months of plan discussion and approval,the Ministry of Railways finally adopted this construction plan.The construction level is set as Class Ⅰ construction.The specific plan is within 70 hours.The throat lines and turnouts at the west end of Wuxi Ⅲ Field were intermittently blocked;and the throat area was completely blocked for 36 hours.The framed bridge used large excavation and jacking technology to pass through the west throat area of Wuxi Ⅲ Field.