文(wen)章來源：上海國資委 發布(bu)時間：2013-06-06
近日，上海城(cheng)建(jian)(jian)下屬城(cheng)建(jian)(jian)路(lu)橋(qiao)承建(jian)(jian)的軌(gui)道(dao)交(jiao)通(tong)12號(hao)線(xian)1B標(biao)區(qu)間(jian)隧道(dao)下行(xing)(xing)(xing)線(xian)盾(dun)構安全進(jin)(jin)洞(dong)(dong)(dong)，標(biao)志(zhi)著該區(qu)間(jian)隧道(dao)下行(xing)(xing)(xing)線(xian)全線(xian)貫(guan)通(tong)。參建(jian)(jian)人員首次采用11米(mi)超長水(shui)平(ping)凍(dong)結(jie)輔以(yi)解除聯鎖定時轉(zhuan)動(dong)刀盤進(jin)(jin)行(xing)(xing)(xing)盾(dun)構推進(jin)(jin)施工。期間(jian)，地基加(jia)固(gu)中采用高(gao)壓旋噴樁施工、于盾(dun)構內部加(jia)裝7個千斤頂(ding)、高(gao)壓水(shui)沖刷盾(dun)構合理調節凍(dong)結(jie)溫(wen)度等措(cuo)施，最大(da)程度地減小了(le)施工風險(xian)，有效防止(zhi)了(le)洞(dong)(dong)(dong)門(men)區(qu)域(yu)漏(lou)水(shui)、土體塌陷(xian)風險(xian)，控制(zhi)了(le)洞(dong)(dong)(dong)門(men)附(fu)近地面沉降，最終實現盾(dun)構安全進(jin)(jin)洞(dong)(dong)(dong)。據悉(xi)，軌(gui)道(dao)交(jiao)通(tong)12號(hao)線(xian)1B標(biao)區(qu)間(jian)隧道(dao)上行(xing)(xing)(xing)線(xian)計劃于6月上旬出洞(dong)(dong)(dong)掘進(jin)(jin)，9月底進(jin)(jin)洞(dong)(dong)(dong)貫(guan)通(tong)。