
近日,合肥市轨道交通4号线石台路站~金寨路站盾构区间左线顺利贯通,成为4号线第37条贯通的单线区间隧道。
该盾构区间左线全长839.728米,埋深12.6~21.3米,线间距15~17米。施工过程中,盾构机自石台路站东端头掘进始发,沿祁门路由西向东推进至金寨路站西端头接收,期间下穿燃气、污水等重要市政管道,穿越金寨路站高架桥桩基等重要风险源,施工难度较大。
自该盾构区间开工建设以来,市轨道集团带领各参建单位积极与各产权单位协调,优化施工组织,做好各项应急措施,将建(构)筑物沉降、地表沉降、管线沉降及盾构机掘进姿态等列为重点管控项目,加强施工安全质量管控,克服出土难度大等诸多不利因素,最终顺利完成石台路站至金寨路站盾构区间左线贯通目标。
截至目前,4号线全线31座车站已有25座车站完成主体结构封顶,全线34台盾构机已有33台盾构机下井,累计完成盾构工程总量的65%。
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