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中鐵五局“攻克”織納鐵路最難隧道

發(fā)布時(shí)間：2015-04-20 08:33:25 來(lái)源：貴州日?qǐng)?bào) 作者：佚名責(zé)任編輯：羅伯特

　　本報(bào)訊 (通訊員任梅彭麗君)日前，由中鐵五局織納鐵路1標(biāo)負(fù)責(zé)施工的孫家坡1號(hào)隧道貫通，為保證項(xiàng)目6月5日進(jìn)入鋪架工期目標(biāo)打好基礎(chǔ)。

　　孫家坡1號(hào)隧道全長(zhǎng)3930米，隧道地質(zhì)構(gòu)造復(fù)雜，斷裂發(fā)育，地層巖體破碎，洞身穿越兩條斷層破碎帶，其中部分段落含煤地層，溶洞群現(xiàn)象多發(fā)，施工空間狹小，施工組織難度大，號(hào)稱“織納鐵路全線施工最難隧道”。

　　該隧道自2013年4月20日開(kāi)工以來(lái)，在施工過(guò)程中出現(xiàn)了幾十個(gè)溶洞，加大了施工難度，影響工期。為加快施工進(jìn)度，確保安全質(zhì)量，項(xiàng)目部采取有效技術(shù)措施，破解了一個(gè)又一個(gè)的施工難題，高效推進(jìn)施工生產(chǎn)。

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