2019年12月30日，大连地铁5号线05标甘（井子站）山（花街站）盾构区间右线顺利始发，标志该项工程正式进入盾构施工阶段。
为保证盾构机按时、安全、顺利始发，进场伊始，项目部不断优化完善盾构施工方案，邀请专家对危险源和风险点进行周密分析、充分论证、严格评审，为盾构顺利始发提供了可靠的技术保障。
甘山盾构区间由南向北沿甘井子街道敷设。右线区间长668.118米，区间覆土为9.28～12.69米，区间中心线间距12～14米，最大坡度2.5％，最小曲线半径450米。该区间预计将于2020年8月贯通。
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