文(wen)章來源：上海國資委 發布時間：2013-06-06
近(jin)日，上海(hai)城建(jian)下(xia)屬城建(jian)路橋承建(jian)的軌(gui)道交(jiao)通(tong)(tong)12號線1B標區(qu)(qu)間隧道下(xia)行線盾構(gou)(gou)安(an)全進(jin)洞(dong)，標志著(zhu)該區(qu)(qu)間隧道下(xia)行線全線貫(guan)通(tong)(tong)。參(can)建(jian)人員首次(ci)采(cai)用(yong)11米超長水(shui)(shui)平(ping)凍結(jie)輔以(yi)解(jie)除聯鎖定時轉動刀盤進(jin)行盾構(gou)(gou)推(tui)進(jin)施工(gong)。期(qi)間，地(di)(di)基加固(gu)中采(cai)用(yong)高壓(ya)旋噴樁(zhuang)施工(gong)、于盾構(gou)(gou)內部加裝7個(ge)千斤頂、高壓(ya)水(shui)(shui)沖刷(shua)盾構(gou)(gou)合理調節凍結(jie)溫度等措施，最大程度地(di)(di)減小了施工(gong)風險，有效(xiao)防(fang)止了洞(dong)門區(qu)(qu)域漏水(shui)(shui)、土體塌陷風險，控制了洞(dong)門附近(jin)地(di)(di)面沉(chen)降，最終實現盾構(gou)(gou)安(an)全進(jin)洞(dong)。據悉(xi)，軌(gui)道交(jiao)通(tong)(tong)12號線1B標區(qu)(qu)間隧道上行線計(ji)劃于6月上旬出洞(dong)掘進(jin)，9月底進(jin)洞(dong)貫(guan)通(tong)(tong)。