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6年攻坚173米 “世界难题”兰渝铁路胡麻岭隧道贯通

2017-06-19 17:01:17   新华网

2015年夏,在世界隧道施工中享有盛誉的德国施工团队,自带设备到胡麻岭“应战”,干了一段时间后,无功而返,在放弃、撤离时认为“不可能在这种地层中打隧道”。

破解难题,最终依靠的是自身努力。兰渝铁路公司董事长、总经理熊春庚说,为了攻克包括胡麻岭隧道在内的地质难题,近年来,中国铁路总公司牵头组织相关各方共同会诊、攻关,国外内顶尖地质专家也先后来到兰渝建设工地,进行现场分析指导。

几经摸索,建设者终于探索出一套攻克胡麻岭隧道第三系富水粉细砂的成熟施工方法。中国铁建十九局董事长王学忠说,这套方法基本程序就是“先进行超前降水,然后在掌子面进行帷幕注浆加固,最后进行开挖作业。”

2015年10月以来,胡麻岭隧道按照这套施工方法作业,再也没有发生过大规模的涌水涌砂,多年来几乎停滞的作业面,慢慢向前掘进。

通过攻坚胡麻岭,施工方中国铁建十九局技术水平上了一个新台阶,取得了超前辐射状降水通道系统、低渗透性粉细砂地层隧道内降水系统等5项国家实用新型专利。

“大国小家”的坚守

8年多来,一大批建设者扎根胡麻岭,他们有的是夫妻,有的是父子、父女,以工地为家,或在工地成家。

胡麻岭隧道架子一队党支部书记巴春梅和她丈夫,从一开工就来到工地,女儿只能托付给姐姐照顾。“我刚来胡麻岭时,女儿才小学毕业,现在胡麻岭贯通了,女儿也从幼师毕业了。”巴春梅说,“我是真心想陪在女儿身边,但工作却不允许,这是我感到最愧疚的地方。”

同样感到愧疚的,还有工程师胡刚,他今年40岁,女儿还不到3岁。因为脱不开身,女儿出生以来,他只见过三四次面,平时想女儿时,就通过手机视频看一看。“忙完了胡麻岭,最大的心愿就是回家看看我的小‘胡麻岭’。”胡刚告诉记者,他给女儿取的小名就是胡麻岭的谐音“胡玛玲”。

59岁的湖南衡阳人肖高瑞,也是最早一批到胡麻岭的施工人员,在工地上干过厨师、司机,现在是洞口值班员。他的女儿肖颜,2009年大学一毕业,也来到胡麻岭,当时只有22岁的她,在西北的黄土高原上,奉献了宝贵的8年青春。“我从小到大生活和学习的地方,都是青山绿水,来这里感觉落差很大,但过了这么多年,已经对胡麻岭产生深厚感情。”肖颜说,“现在离开的日子快到了,真有点舍不得。”

“以后有机会,我会坐火车到胡麻岭隧道看看。也许火车通过隧道的时间很短,但这里有我最珍贵的记忆。”胡刚告诉记者。(记者任卫东、齐中熙、王衡、屠国玺)

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