
近日,随着“大禹•绿城3号”盾构机刀盘破土而出,郑州地铁8号线01标02工区梧桐街出入场右线盾构顺利实现贯通,提前25天完成了节点目标,这也是该标段首个实现贯通的区间。
梧桐街出入场右线全长907米,覆土厚度6~12.7米,为黏质粉土地层,其中要侧穿一座地下油库,侧穿段全长约为61米,最小水平距离16.4米。“大禹•绿城3号”盾构机自天健湖站始发后,沿科学大道北侧绿化带依次下穿金柏路、规划化工北路,在安全侧穿大桥石化科学大道加油站配房及地下油库后,顺利到达梧桐街出入场线。
掘进过程中,项目部严格控制掘进参数,加强测量监控,保证掘进轨迹符合设计的曲线路径。同时,项目精心组织,各项施工工序有效衔接,创造了单班最高12环的掘进记录,确保盾构施工高效进行。“大禹•绿城3号”盾构机在经过检修后,将继续投入到梧桐街出入场左线紧张的施工当中。
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