文章來源：中國鐵路(lu)工程總公司 發布時間：2010-02-20
2月3日(ri)，中鐵隧(sui)道承建的成(cheng)都(dou)地(di)鐵一(yi)號線(xian)(xian)一(yi)期工(gong)程4標(biao)項目盾(dun)構區間勝利貫通。該段全長4900米單延米，右線(xian)(xian)隧(sui)道采(cai)(cai)用(yong)(yong)泥水盾(dun)構，左(zuo)線(xian)(xian)采(cai)(cai)用(yong)(yong)土壓盾(dun)構。位于(yu)成(cheng)都(dou)特殊(shu)的砂卵石(shi)且富水飽和地(di)層，需穿越污(wu)水管線(xian)(xian)和重要(yao)建（構）筑物。左(zuo)線(xian)(xian)隧(sui)道于(yu)2008年9月4日(ri)提前(qian)半(ban)年實現單線(xian)(xian)貫通，通過(guo)采(cai)(cai)用(yong)(yong)土壓盾(dun)構接應泥水盾(dun)構的施(shi)工(gong)方式，提前(qian)25天全面完成(cheng)標(biao)段施(shi)工(gong)任務。先后創造了20天過(guo)站、月掘(jue)進357米等成(cheng)都(dou)地(di)鐵施(shi)工(gong)記錄。