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國內外巖(yan)(yan)溶(rong)(rong)地(di)區(qu)最長隧(sui)道——廣西桂(gui)中治(zhi)旱樂灘水庫引(yin)水灌區(qu)工(gong)(gong)程(cheng)北(bei)干(gan)渠(qu)TBM施工(gong)(gong)隧(sui)洞順(shun)利(li)貫(guan)通(tong)。該隧(sui)道的(de)(de)順(shun)利(li)貫(guan)通(tong)標志著(zhu)開敞式TBM（全斷(duan)面(mian)隧(sui)道掘(jue)進機，Tunnel Boring Machine）技(ji)術在(zai)(zai)復雜地(di)質條件下取(qu)得重(zhong)大突破，在(zai)(zai)國內外首次(ci)成(cheng)功實現了(le)在(zai)(zai)巖(yan)(yan)溶(rong)(rong)地(di)區(qu)獨頭掘(jue)進11.9km的(de)(de)先例，為多項巖(yan)(yan)溶(rong)(rong)區(qu)重(zhong)大課題研(yan)究、同(tong)類(lei)工(gong)(gong)程(cheng)施工(gong)(gong)提(ti)供了(le)可借鑒(jian)的(de)(de)經驗(yan)，也標志著(zhu)TBM技(ji)術在(zai)(zai)廣西首次(ci)成(cheng)功應用，廣西巖(yan)(yan)溶(rong)(rong)地(di)區(qu)勘察設計技(ji)術邁(mai)上新臺階(jie)。

據了解，廣西桂中治(zhi)旱(han)樂灘水庫引(yin)水灌(guan)區(qu)工(gong)(gong)程(cheng)主要(yao)位于廣西來賓市紅水河兩岸，設(she)計引(yin)水灌(guan)溉面積為128.79萬畝(mu)，屬大(da)(da)型灌(guan)區(qu)，由廣西金投集團(tuan)下屬廣西壯族自治(zhi)區(qu)水利電力勘(kan)(kan)(kan)測設(she)計研究(jiu)院有限責任公司(si)勘(kan)(kan)(kan)測設(she)計。在項(xiang)目(mu)施工(gong)(gong)前期(qi)，設(she)計單(dan)位通過(guo)(guo)多種勘(kan)(kan)(kan)探(tan)試驗手段、先進的物探(tan)設(she)備及綜合分(fen)析方法(fa)，查明了工(gong)(gong)程(cheng)區(qu)巖(yan)(yan)溶(rong)發(fa)育(yu)特征(zheng)，將(jiang)隧(sui)洞(dong)(dong)布置在巖(yan)(yan)溶(rong)區(qu)非巖(yan)(yan)溶(rong)化(hua)地帶，避開了強巖(yan)(yan)溶(rong)發(fa)育(yu)區(qu)和地下暗(an)河，成功解決了隧(sui)洞(dong)(dong)埋(mai)深大(da)(da)，地下水位高等存在諸多地質問題及施工(gong)(gong)難題，為隧(sui)洞(dong)(dong)成功貫通奠定了堅(jian)實基礎。工(gong)(gong)程(cheng)實施過(guo)(guo)程(cheng)中，TBM掘進機(ji)快速、安全、環保的優點得到(dao)(dao)充(chong)分(fen)體現，Ⅳ類(lei)圍巖(yan)(yan)每(mei)(mei)月掘進400～450m，Ⅲ類(lei)圍巖(yan)(yan)每(mei)(mei)月掘進600m左右，最(zui)大(da)(da)達到(dao)(dao)720m，掘進方向定位精準(zhun)，符合項(xiang)目(mu)預(yu)期(qi)。

【責任編輯：語謙】