經過50天熱血奮戰，珠三角水資源B3標(biao)5號井地連(lian)墻施工(gong)任務于2019年10月11日順(shun)利(li)完工(gong)！

      作(zuo)為(wei)珠(zhu)(zhu)江三角(jiao)洲水資源配置工(gong)程控制(zhi)性標(biao)段，同(tong)時(shi)也是唯(wei)一下穿珠(zhu)(zhu)江口獅子洋的標(biao)段，GS05號盾構始發工(gong)作(zuo)井一直備受關(guan)注，工(gong)作(zuo)井各項工(gong)作(zuo)進展的快慢(man)將對該標(biao)段乃(nai)至(zhi)整(zheng)個珠(zhu)(zhu)三角(jiao)工(gong)程進度(du)產生(sheng)影響。GS05號工(gong)作(zuo)井地連墻成(cheng)槽深(shen)度(du)達56.62米，約(yue)相當(dang)于20層(ceng)樓的高(gao)(gao)度(du)，槽身(shen)范圍內多為(wei)淤泥質黏土、砂層(ceng)及弱風化泥質粉砂巖(yan)，巖(yan)層(ceng)中(zhong)石英含量高(gao)(gao)、軟硬不均(jun)，地質條件異常(chang)復雜，成(cheng)槽過程中(zhong)軟硬交界(jie)面極易發生(sheng)塌(ta)孔等不可控情況，施工(gong)難度(du)極大(da)。

       針(zhen)對施工(gong)(gong)技(ji)術重點難點，項目(mu)部采用(yong)“鉆(zhan)+抓+銑(xian)”相(xiang)結(jie)合的成(cheng)(cheng)(cheng)槽工(gong)(gong)藝，使(shi)用(yong)旋挖鉆(zhan)機引孔(kong)，成(cheng)(cheng)(cheng)槽機抓，雙輪銑(xian)成(cheng)(cheng)(cheng)槽，極大地(di)(di)提(ti)高(gao)了成(cheng)(cheng)(cheng)槽效率，同(tong)時(shi)采用(yong)整(zheng)體加工(gong)(gong)、分節吊(diao)裝的超長鋼(gang)筋籠作(zuo)業方(fang)法，縮短了工(gong)(gong)期。GS05號(hao)工(gong)(gong)作(zuo)井自8月23日開始(shi)第一幅(fu)(fu)地(di)(di)連墻施工(gong)(gong)，截(jie)至10月11日，項目(mu)部用(yong)時(shi)不(bu)到50天便(bian)完成(cheng)(cheng)(cheng)了I序槽9幅(fu)(fu)，II序槽9幅(fu)(fu)，地(di)(di)連墻18幅(fu)(fu)全部施工(gong)(gong)完成(cheng)(cheng)(cheng)。