
1月11日,随着两层楼高的盾构机刀盘在居康路站南端接收井内缓缓破土而出,宣告小海出入场线~居康路站右线顺利贯通。圆满完成06标段2021年洞通的工期任务,为全线早日竣工通车奠定了坚实基础。
小海停车场出入场线地处南通市开发区,场地环境主要为城市道路,该盾构段从小海停车场出入场线明挖段工作井驶出后,线路纵坡“V”字形坡,进入居康路站接收。入场线盾构段长1495.990米,出场线盾构段长1495.902米。本次贯通的是区间右线隧道,与之平行的左线隧道已于2020年12月16日贯通。
为确保盾构机顺利掘进,自今年9月份始发以来,两台盾构机先后长距离穿越近1.5公里的源兴路道路,上方车辆通行未受任何影响。小海停车场出入场线右线初期吊装、拼装、系统调试过程中都是非常的顺利,盾构推进期间,左右线均需要穿越既有居康路站~宏兴路站区间,穿越前进行专家论证,对既有线路相交区域已进行二次注浆加固,并采用定型钢支撑进行“米字型”4环一个断面的预支撑加固,并安排人员在既有线路值班,观察支撑的情况。经过48小时的不懈努力,小海停车场出入场线盾构段右线顺利在居康路站接收。
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