文章來源：上海國(guo)資委 發布時間：2013-06-06
近(jin)日，上(shang)海城建下(xia)屬(shu)城建路橋承(cheng)建的(de)軌道(dao)交通(tong)(tong)(tong)12號線(xian)(xian)1B標(biao)(biao)區間隧(sui)(sui)(sui)道(dao)下(xia)行線(xian)(xian)盾(dun)構(gou)安全進洞(dong)，標(biao)(biao)志(zhi)著(zhu)該區間隧(sui)(sui)(sui)道(dao)下(xia)行線(xian)(xian)全線(xian)(xian)貫通(tong)(tong)(tong)。參(can)建人員首(shou)次(ci)采(cai)用11米(mi)超(chao)長水(shui)平凍結輔以(yi)解除聯鎖定時轉動(dong)刀盤進行盾(dun)構(gou)推進施工(gong)。期(qi)間，地(di)基加(jia)固(gu)中采(cai)用高壓旋噴樁施工(gong)、于(yu)盾(dun)構(gou)內(nei)部加(jia)裝7個(ge)千斤頂、高壓水(shui)沖刷(shua)盾(dun)構(gou)合理(li)調節(jie)凍結溫度等措(cuo)施，最(zui)大程度地(di)減(jian)小了施工(gong)風險(xian)，有效防止了洞(dong)門區域(yu)漏(lou)水(shui)、土(tu)體塌陷風險(xian)，控制了洞(dong)門附近(jin)地(di)面沉(chen)降，最(zui)終實現(xian)盾(dun)構(gou)安全進洞(dong)。據(ju)悉，軌道(dao)交通(tong)(tong)(tong)12號線(xian)(xian)1B標(biao)(biao)區間隧(sui)(sui)(sui)道(dao)上(shang)行線(xian)(xian)計(ji)劃于(yu)6月上(shang)旬出洞(dong)掘進，9月底(di)進洞(dong)貫通(tong)(tong)(tong)。