歷(li)時(shi)2142個日夜艱苦鏖戰(zhan)，10月10日15時(shi)58分，滇中(zhong)引水工程上果(guo)園隧洞順利貫通，標志著項(xiang)目整體施工取得突(tu)破性進展。

滇中(zhong)引水(shui)工程(cheng)上果園隧(sui)洞(dong)(dong)(dong)由中(zhong)鐵五局集團有限公(gong)司承(cheng)建(jian)，北(bei)連北(bei)衙隧(sui)洞(dong)(dong)(dong)，南接下河壩隧(sui)洞(dong)(dong)(dong)，全長約5.53公(gong)里(li)，設(she)計流量135立方米/秒(miao)。隧(sui)洞(dong)(dong)(dong)屬(shu)深埋隧(sui)洞(dong)(dong)(dong)，存(cun)在大(da)(da)(da)量軟(ruan)巖大(da)(da)(da)變形和承(cheng)壓(ya)水(shui)等不良地質洞(dong)(dong)(dong)段，下穿大(da)(da)(da)麗鐵路，圍巖情況極其復雜，是本標段的(de)控制性工程(cheng)和關鍵線路之一。自(zi)進(jin)洞(dong)(dong)(dong)施工以(yi)來，項目(mu)部(bu)戰(zhan)勝了施工期間遇到較大(da)(da)(da)規模(mo)的(de)隧(sui)洞(dong)(dong)(dong)塌方6次、軟(ruan)巖大(da)(da)(da)變形14次。

面(mian)對隧洞(dong)(dong)(dong)復(fu)雜的地(di)(di)質(zhi)(zhi)難題，為(wei)保證隧洞(dong)(dong)(dong)安全按(an)期(qi)順利(li)貫通(tong)，項目部采取了一(yi)系(xi)列措施(shi)：強化運用超(chao)前地(di)(di)質(zhi)(zhi)預報技術手段(duan)保安全，通(tong)過(guo)運用瞬變電磁等手段(duan)探(tan)測(ce)，輔以超(chao)前水(shui)平(ping)鉆和加(jia)深炮孔相(xiang)互驗(yan)證，精(jing)準掌握地(di)(di)質(zhi)(zhi)條件變化，為(wei)施(shi)工(gong)(gong)方案制定提供(gong)可靠依據(ju)；根(gen)據(ju)不同地(di)(di)質(zhi)(zhi)洞(dong)(dong)(dong)段(duan)特(te)點，對于軟巖大(da)(da)變形和下穿(chuan)大(da)(da)麗(li)鐵路等特(te)殊洞(dong)(dong)(dong)段(duan)，采用短(duan)進尺、弱爆破、早支護、勤量(liang)測(ce)、緊(jin)封(feng)閉的施(shi)工(gong)(gong)原則，做好超(chao)前地(di)(di)質(zhi)(zhi)預報和安全監測(ce)；深入開(kai)展“三(san)勇”黨建主(zhu)題勞動(dong)競賽促(cu)進度；高(gao)度重視施(shi)工(gong)(gong)生產過(guo)程(cheng)(cheng)中(zhong)(zhong)的環水(shui)保工(gong)(gong)作，使工(gong)(gong)程(cheng)(cheng)榮獲滇中(zhong)(zhong)引(yin)水(shui)工(gong)(gong)程(cheng)(cheng)綠(lv)色典(dian)范樣板工(gong)(gong)程(cheng)(cheng)。

今年以來，滇(dian)中引水(shui)工(gong)(gong)程建設(she)(she)有序推進(jin)(jin)。省滇(dian)中引水(shui)工(gong)(gong)程建設(she)(she)管(guan)理(li)局數(shu)據顯示，截至10月上旬，滇(dian)中引水(shui)工(gong)(gong)程總體進(jin)(jin)展(zhan)順利，一期工(gong)(gong)程完成概(gai)算投資占比90.6%，水(shui)源工(gong)(gong)程全面進(jin)(jin)入設(she)(she)備安裝階段，輸(shu)水(shui)工(gong)(gong)程完成掘進(jin)(jin)93.9%、襯砌84.9%，其中全線(xian)58條(tiao)隧洞已貫通(tong)43條(tiao)。 （記者 胡(hu)曉(xiao)蓉 通(tong)訊員 匡(kuang)東平）