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　　近日(ri)，中(zhong)(zhong)鐵(tie)(tie)隧(sui)(sui)道施工(gong)(gong)(gong)的(de)西安(an)(an)(an)地鐵(tie)(tie)二號線(xian)15標段(duan)南(nan)(nan)稍門－小(xiao)(xiao)(xiao)寨(zhai)區間(jian)(jian)左(zuo)右線(xian)隧(sui)(sui)道貫(guan)通。南(nan)(nan)稍門—小(xiao)(xiao)(xiao)寨(zhai)區間(jian)(jian)單線(xian)全(quan)(quan)長1511.88米，北(bei)起(qi)長安(an)(an)(an)路南(nan)(nan)稍門，南(nan)(nan)至小(xiao)(xiao)(xiao)寨(zhai)車站。自(zi)開工(gong)(gong)(gong)以來，中(zhong)(zhong)鐵(tie)(tie)隧(sui)(sui)道面對工(gong)(gong)(gong)期(qi)(qi)緊和(he)施工(gong)(gong)(gong)任務艱巨、風險(xian)大的(de)雙重壓力，針對區間(jian)(jian)13種(zhong)開挖斷(duan)面，采用臺階法(fa)、CRD法(fa)、雙側壁導(dao)坑法(fa)等(deng)施工(gong)(gong)(gong)工(gong)(gong)(gong)藝，精心組織、科學安(an)(an)(an)排，在(zai)確保安(an)(an)(an)全(quan)(quan)質量的(de)前提下，順(shun)利地通過了(le)(le)南(nan)(nan)二環長安(an)(an)(an)立交橋(qiao)、F6及F6'地裂縫、環城(cheng)暗涵、西安(an)(an)(an)音樂學院人行(xing)天橋(qiao)、好又多超市人行(xing)天橋(qiao)、涌水流(liu)砂(sha)等(deng)困難地段(duan)，比業主(zhu)下達的(de)雙線(xian)貫(guan)通工(gong)(gong)(gong)期(qi)(qi)提前了(le)(le)45天，為(wei)中(zhong)(zhong)鐵(tie)(tie)隧(sui)(sui)道在(zai)西安(an)(an)(an)地鐵(tie)(tie)市場贏(ying)得了(le)(le)良好的(de)聲譽。