文章來(lai)源：中國鐵路工程總公司 發(fa)布時(shi)間：2010-02-20
2月3日(ri)，中(zhong)鐵(tie)隧道(dao)承建的成(cheng)都(dou)地(di)(di)鐵(tie)一號線(xian)(xian)一期工(gong)程4標項目盾(dun)構(gou)(gou)區間勝利貫通(tong)。該段(duan)全長(chang)4900米單(dan)延米，右(you)線(xian)(xian)隧道(dao)采(cai)(cai)用(yong)(yong)泥(ni)水盾(dun)構(gou)(gou)，左線(xian)(xian)采(cai)(cai)用(yong)(yong)土壓盾(dun)構(gou)(gou)。位于成(cheng)都(dou)特殊的砂卵石(shi)且富(fu)水飽和(he)地(di)(di)層(ceng)，需(xu)穿越(yue)污水管線(xian)(xian)和(he)重要建（構(gou)(gou)）筑物。左線(xian)(xian)隧道(dao)于2008年9月4日(ri)提前(qian)半年實現(xian)單(dan)線(xian)(xian)貫通(tong)，通(tong)過(guo)采(cai)(cai)用(yong)(yong)土壓盾(dun)構(gou)(gou)接應泥(ni)水盾(dun)構(gou)(gou)的施工(gong)方式，提前(qian)25天全面完(wan)成(cheng)標段(duan)施工(gong)任務。先后創造了20天過(guo)站、月掘進357米等成(cheng)都(dou)地(di)(di)鐵(tie)施工(gong)記錄(lu)。