文(wen)章來源(yuan)：中(zhong)國(guo)鐵路工(gong)程總公司(si) 發布(bu)時間：2010-02-20
2月3日(ri)，中(zhong)鐵(tie)隧(sui)道承(cheng)建(jian)的(de)成(cheng)都地(di)(di)鐵(tie)一(yi)號(hao)線(xian)(xian)(xian)一(yi)期工(gong)程4標(biao)項目盾構區間(jian)勝利(li)貫通。該(gai)段全(quan)長4900米(mi)(mi)單延米(mi)(mi)，右(you)線(xian)(xian)(xian)隧(sui)道采用(yong)泥水(shui)盾構，左(zuo)線(xian)(xian)(xian)采用(yong)土壓盾構。位于(yu)成(cheng)都特(te)殊(shu)的(de)砂卵石且富(fu)水(shui)飽和地(di)(di)層，需穿(chuan)越污(wu)水(shui)管線(xian)(xian)(xian)和重要建(jian)（構）筑物。左(zuo)線(xian)(xian)(xian)隧(sui)道于(yu)2008年9月4日(ri)提前半年實(shi)現單線(xian)(xian)(xian)貫通，通過采用(yong)土壓盾構接應泥水(shui)盾構的(de)施工(gong)方式，提前25天全(quan)面完(wan)成(cheng)標(biao)段施工(gong)任務。先(xian)后創造了(le)20天過站、月掘(jue)進357米(mi)(mi)等成(cheng)都地(di)(di)鐵(tie)施工(gong)記錄(lu)。