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地平线下的尖刀战士
2017-08-21 05:46:32 中国青年网
面对急难险重,青年突击队员们勇敢地冲在最前面,他们的身上仿佛有一股永远使不完的劲。其实,他们更是一个创新的团队,高擎科技利剑,攻克盾构始发难题,首开国内地铁建设先河。
面对紧张工期,项目部决定将1号线已检修完成的两台盾构机投入到2号线,可即使是投入两台盾构机,也必须是首台盾构机接收以后另一台盾构机才能始发。
“怎样才能让两台盾构机错开始发?怎样突破只有一台盾构机作业的空间限制加快施工进度?”韩震带领突击队员成立技术攻关小组,论证研究盾构侧向始发方案。他们先后找到国内地铁专家请教,并对其他地铁项目进行了考察学习。
经过反复论证,他们首先提出了横通道与线路斜交45度的方案,可横通道内两台盾构机交叉施工的难题还是无法解决。一个偶然机会,技术人员在电脑上绘出横通道与线路斜交的CAD图后,无意之中反转过来,盾构机侧向π型即双竖井双横通道始发方案竟然这样诞生了!最终,经过14个月的艰苦努力,进行了20余次论证模拟试验后,他们创造的盾构机侧向π型始发设计方案取得成功,它使左右线隧道盾构各行其道,效率至少提高一倍。依靠这项重大创新,项目部至少节约工期半年。长期从事地铁施工及研究的北京工业大学教授、博士生导师张明聚说,这项国内首创技术,对目前国内城市地铁建设具有十分重要的意义。
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