9月8日，记者从中铁七局郑州地铁指挥部获悉，当天上午，郑州地铁7号线龙门路站～张家村站盾构区间左线顺利贯通。至此，该区间左右线双线贯通。
郑州地铁7号线一期工程线路全长26.81公里，中铁七局承担着8.294公里的施工任务，其中长1650米的龙门路站～张家村站盾构区间为全线最长区间，在8月10日右线贯通的基础上，此次又完成了该区间左线贯通任务。
作为全线最长盾构区间，龙张区间全面贯通为郑州地铁7号线加快进度、早日建成创造了条件。
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