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5月30日，驕陽炙烤著(zhu)桂南大(da)地，環北(bei)部灣廣西水資(zi)源配(pei)置工程(cheng)B2標段雙(shuang)洞交響，同日雙(shuang)捷——木頭麓(lu)隧洞提前72天貫通(tong)，雞(ji)靈隧洞1#支洞成功接入主洞。

郁江南干線木(mu)(mu)頭(tou)(tou)麓(lu)隧洞(dong)的(de)貫通(tong)比原定合同(tong)工(gong)(gong)(gong)(gong)(gong)(gong)期提前(qian)了(le)整整72天。全(quan)長達(da)到811.24米的(de)木(mu)(mu)頭(tou)(tou)麓(lu)隧洞(dong)，施工(gong)(gong)(gong)(gong)(gong)(gong)過程(cheng)中面臨著(zhu)穿(chuan)越淺(qian)埋破碎段的(de)挑戰，圍巖狀(zhuang)況并(bing)不理想。為了(le)確(que)保施工(gong)(gong)(gong)(gong)(gong)(gong)的(de)安全(quan)性，項目部嚴(yan)格遵循了(le)“管超前(qian)、嚴(yan)注漿、短進尺(chi)、強支(zhi)護、早(zao)閉合、勤量測”的(de)施工(gong)(gong)(gong)(gong)(gong)(gong)原則。為此(ci)，中國水電一局組建(jian)了(le)一支(zhi)專(zhuan)業的(de)隧道施工(gong)(gong)(gong)(gong)(gong)(gong)隊伍，并(bing)制定了(le)嚴(yan)密的(de)安全(quan)風(feng)險防控措施。同(tong)時，建(jian)設(she)方引入(ru)了(le)第三方監(jian)(jian)測單位，采用TSP法和地質(zhi)雷達(da)法進行超前(qian)地質(zhi)預(yu)報和監(jian)(jian)控量測，根據檢(jian)測結果動(dong)態調整施工(gong)(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)(gong)藝，有效降低了(le)施工(gong)(gong)(gong)(gong)(gong)(gong)風(feng)險，確(que)保了(le)木(mu)(mu)頭(tou)(tou)麓(lu)隧洞(dong)的(de)順利貫通(tong)。

木(mu)頭(tou)麓隧(sui)(sui)洞貫通使(shi)木(mu)塘隧(sui)(sui)洞防(fang)洪壓(ya)力驟(zou)減，重載卡車不用再繞行3公里陡坡。同日，歷(li)經6個月的(de)(de)晝夜奮戰，雞(ji)靈(ling)(ling)隧(sui)(sui)洞1#支洞順利接入雞(ji)靈(ling)(ling)隧(sui)(sui)洞主洞，為(wei)主洞掘進打開新的(de)(de)工作面。

雞靈隧(sui)(sui)洞(dong)1#支洞(dong)位(wei)于欽(qin)州市(shi)靈山縣靈城鎮白木村附近，長度約為(wei)735米。隧(sui)(sui)洞(dong)基巖以(yi)(yi)石(shi)炭系(xi)(xi)下(xia)統(tong)砂巖夾頁巖為(wei)主(zhu)，穿越2處地(di)質(zhi)構造破碎(sui)帶(dai)，自進洞(dong)施工(gong)以(yi)(yi)來，項目(mu)建設(she)團隊以(yi)(yi)技術攻關為(wei)導(dao)向，采用(yong)TSP地(di)質(zhi)雷達法對(dui)圍巖進行超(chao)前(qian)地(di)質(zhi)預報，并以(yi)(yi)三方數據(ju)對(dui)監控量測(ce)信息(xi)進行聯合驗證(zheng)，確保施工(gong)過程安全(quan)可控。同時，項目(mu)建設(she)團隊積極(ji)構建“智慧工(gong)地(di)”管理體系(xi)(xi)，配置(zhi)隧(sui)(sui)道視(shi)頻監控系(xi)(xi)統(tong)、人員自動定位(wei)系(xi)(xi)統(tong)、應(ying)急語(yu)音報警系(xi)(xi)統(tong)、LED智能顯(xian)示系(xi)(xi)統(tong)、有毒有害氣體自動監測(ce)系(xi)(xi)統(tong)等信息(xi)化設(she)備設(she)施，有效(xiao)破解隧(sui)(sui)洞(dong)掘進難(nan)題。地(di)質(zhi)條件復雜，施工(gong)難(nan)度大。

作(zuo)為國(guo)家水網(wang)骨干工程，環(huan)北廣西工程正以(yi)每天推進126米的(de)速度，在(zai)喀斯特(te)地(di)貌下(xia)編(bian)織491公里(li)的(de)“地(di)下(xia)銀河”。

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