文章來源：中國鐵路工程(cheng)總公司(si) 發布時間：2010-02-20
2月(yue)(yue)3日，中鐵(tie)隧道(dao)承建的成都地(di)鐵(tie)一號線(xian)(xian)一期工(gong)(gong)(gong)程4標(biao)項目盾(dun)構(gou)(gou)(gou)區間(jian)勝利貫通。該段全長4900米單(dan)延米，右線(xian)(xian)隧道(dao)采用(yong)泥(ni)水盾(dun)構(gou)(gou)(gou)，左(zuo)線(xian)(xian)采用(yong)土(tu)壓(ya)盾(dun)構(gou)(gou)(gou)。位于成都特殊的砂(sha)卵石且富(fu)水飽和地(di)層，需(xu)穿越污(wu)水管線(xian)(xian)和重要建（構(gou)(gou)(gou)）筑物。左(zuo)線(xian)(xian)隧道(dao)于2008年9月(yue)(yue)4日提前半年實現單(dan)線(xian)(xian)貫通，通過采用(yong)土(tu)壓(ya)盾(dun)構(gou)(gou)(gou)接(jie)應泥(ni)水盾(dun)構(gou)(gou)(gou)的施工(gong)(gong)(gong)方式，提前25天全面完成標(biao)段施工(gong)(gong)(gong)任務。先后創造了20天過站、月(yue)(yue)掘進357米等成都地(di)鐵(tie)施工(gong)(gong)(gong)記錄(lu)。