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央广网郑州9月3日消息(记者胡晓辉 河南台记者赵勇生)今天上午,郑州地铁星空路站施工现场,伴随着盾构机始发指令的下达,“中原号”盾构机缓缓转动起巨大的刀盘稳步推进,标志着郑州地铁奥体中心站至星空路站右线盾构区间顺利开始掘进。
负责此次土建施工的中铁二十五局集团项目负责人介绍,该集团施工标段包含两站两区间,分别为星空路站、临湖路站、奥体中心站至星空路站区间及市委党校站至奥体中心站区间。两个车站主体施工计划年底实现主体结构封顶,星空路站左线也将于9月底达到盾构始发条件。
据了解,该盾构始发区间右线全长1168米,左线全长1445米,下穿陇海路高架桥、郑州市国防科技学校多栋建筑、星海路地下匝道等结构物。为防范盾构下穿建筑物等风险,项目部将通过施工前现场试验段掘进,确定盾构土仓压力、推进速度、推力、扭矩等一系列参数,确保盾构机安全前行。为确保顺利完成业主要求的施工节点工期目标,“中原号”始发后,在确保各项工序正常推进的条件下,计划将以15米/天的速度向前掘进,预期在11月底实现该盾构区间的顺利贯通。
“为兑现施工节点目标,确保盾构始发顺利进行,自项目进场以来,在保障施工安全质量前提下,项目部优化施工组织,协调解决施工中遇到的各类矛盾和难题,克服恶劣天气,全力推进星空路站全面施工进程,最终达到盾构始发条件。”中铁二十五局集团郑州地铁项目负责人李昌卿介绍说。
李昌卿表示,针对施工现场粉质粘土及地下水水量丰富的地质特点,“中原号”盾构机采取了量身定做、针对性设计,选型上使用土压平衡式盾构机,更好地适应郑州地层要求。此次的“中原号”成功始发,将进一步推进郑州市“四个中心”建设步伐,为2019年在郑州举办的全国民族运动会提供有力的基础交通设施保障。
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