文章來源(yuan)：中國鐵路工程(cheng)總公司 發布時間：2010-05-08
4月28日，中(zhong)鐵隧道(dao)施(shi)工(gong)(gong)的(de)西安(an)地(di)鐵二(er)(er)號線(xian)(xian)15標(biao)體(ti)（體(ti)育(yu)場(chang)(chang)）—小（小寨(zhai)(zhai)）區(qu)間左線(xian)(xian)隧道(dao)順(shun)利貫通。西安(an)地(di)鐵二(er)(er)號線(xian)(xian)15標(biao)體(ti)小區(qu)間北起(qi)陜西省體(ti)育(yu)場(chang)(chang)站，沿長(chang)(chang)安(an)路向南(nan)至小寨(zhai)(zhai)站，區(qu)間單線(xian)(xian)全(quan)長(chang)(chang)897.148米，采用(yong)暗(an)(an)挖法施(shi)工(gong)(gong)，隧道(dao)下穿(chuan)既有機(ji)構(gou)多(duo)，通過(guo)地(di)層復雜，施(shi)工(gong)(gong)沉降(jiang)控(kong)制及安(an)全(quan)要(yao)求高。在工(gong)(gong)程(cheng)施(shi)工(gong)(gong)中(zhong)，針(zhen)對(dui)該區(qu)間斷面變化多(duo)，工(gong)(gong)藝、工(gong)(gong)法復雜多(duo)變，工(gong)(gong)序轉(zhuan)換頻繁等制約施(shi)工(gong)(gong)進(jin)度的(de)因(yin)素，不斷細化施(shi)工(gong)(gong)措施(shi)，強化安(an)全(quan)質(zhi)量(liang)控(kong)制，確(que)保安(an)全(quan)順(shun)利地(di)通過(guo)了南(nan)二(er)(er)環(huan)長(chang)(chang)安(an)立交橋(qiao)、F6及F6地(di)裂縫、環(huan)城暗(an)(an)涵、涌(yong)水流砂困難(nan)地(di)段(duan)、人(ren)行天橋(qiao)樁基托換等重大(da)危險源(yuan)的(de)考驗，提前(qian)一(yi)個月完成了區(qu)間隧道(dao)的(de)開(kai)挖初支任(ren)務，實現了隧道(dao)的(de)順(shun)利貫通。