文章來源：中國(guo)鐵(tie)路工程(cheng)總公司 發布時(shi)間：2009-09-10
9月5日，由中鐵三(san)局承建的(de)(de)鄭西(xi)(xi)鐵路客(ke)運(yun)專線(xian)函谷(gu)關(guan)隧(sui)道(dao)(dao)(dao)順利(li)(li)貫通(tong)。函谷(gu)關(guan)隧(sui)道(dao)(dao)(dao)全長7851m，斷面達164 m2，是目前國內(nei)最(zui)長的(de)(de)大斷面濕陷(xian)性(xing)黃(huang)土(tu)隧(sui)道(dao)(dao)(dao)。該(gai)隧(sui)道(dao)(dao)(dao)所在區域(yu)地質條件復雜，且先后4次下穿連霍高(gao)速公路、7次穿越沖(chong)溝，施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)難度大，安全風(feng)險高(gao)，外界干擾大，屬鐵道(dao)(dao)(dao)部重(zhong)點關(guan)注的(de)(de)隧(sui)道(dao)(dao)(dao)項目、鄭西(xi)(xi)鐵路客(ke)運(yun)專線(xian)重(zhong)點控制(zhi)工(gong)(gong)(gong)(gong)程。開(kai)工(gong)(gong)(gong)(gong)以(yi)來，中鐵三(san)局以(yi)建設(she)“世界一(yi)流客(ke)運(yun)專線(xian)”為目標，克服(fu)地質情(qing)況(kuang)復雜、工(gong)(gong)(gong)(gong)作環境惡劣(lie)等(deng)不(bu)利(li)(li)因素干擾，精心策劃，周(zhou)密部署，不(bu)斷優化施(shi)(shi)(shi)組設(she)計(ji)，嚴格(ge)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝，狠(hen)抓過程控制(zhi)，大力開(kai)展(zhan)技術(shu)攻關(guan)，成功解(jie)決了淺(qian)埋、偏(pian)壓、砂(sha)層等(deng)不(bu)良地質及(ji)長大隧(sui)道(dao)(dao)(dao)的(de)(de)通(tong)風(feng)等(deng)關(guan)鍵性(xing)技術(shu)難題，創(chuang)出(chu)了月單(dan)口掘進80.6m的(de)(de)黃(huang)土(tu)隧(sui)道(dao)(dao)(dao)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)最(zui)高(gao)紀(ji)錄，實現了隧(sui)道(dao)(dao)(dao)的(de)(de)順利(li)(li)貫通(tong)。