文章來源：上(shang)海(hai)國資委(wei) 發布時間：2013-06-06
近日(ri)，上(shang)海城(cheng)建(jian)下(xia)屬(shu)城(cheng)建(jian)路橋承建(jian)的軌(gui)道(dao)(dao)交(jiao)通(tong)12號線(xian)1B標(biao)區(qu)間(jian)隧道(dao)(dao)下(xia)行線(xian)盾(dun)(dun)(dun)構(gou)(gou)(gou)安全(quan)(quan)進(jin)洞，標(biao)志(zhi)著該區(qu)間(jian)隧道(dao)(dao)下(xia)行線(xian)全(quan)(quan)線(xian)貫(guan)通(tong)。參建(jian)人員首(shou)次采用11米(mi)超長水平(ping)凍結(jie)輔以解(jie)除聯鎖定時轉動(dong)刀盤進(jin)行盾(dun)(dun)(dun)構(gou)(gou)(gou)推進(jin)施工(gong)(gong)。期間(jian)，地(di)基加(jia)(jia)固中(zhong)采用高壓旋噴樁施工(gong)(gong)、于(yu)(yu)盾(dun)(dun)(dun)構(gou)(gou)(gou)內部加(jia)(jia)裝(zhuang)7個千(qian)斤頂、高壓水沖刷盾(dun)(dun)(dun)構(gou)(gou)(gou)合理(li)調節凍結(jie)溫度等措施，最大(da)程(cheng)度地(di)減小(xiao)了(le)(le)施工(gong)(gong)風險，有效防止了(le)(le)洞門區(qu)域漏水、土(tu)體塌陷風險，控(kong)制(zhi)了(le)(le)洞門附近地(di)面沉降(jiang)，最終實現(xian)盾(dun)(dun)(dun)構(gou)(gou)(gou)安全(quan)(quan)進(jin)洞。據悉，軌(gui)道(dao)(dao)交(jiao)通(tong)12號線(xian)1B標(biao)區(qu)間(jian)隧道(dao)(dao)上(shang)行線(xian)計(ji)劃于(yu)(yu)6月(yue)上(shang)旬出洞掘進(jin)，9月(yue)底進(jin)洞貫(guan)通(tong)。