免费菠萝视频app下载

國(guo)內(nei)外巖(yan)溶(rong)地(di)(di)(di)區(qu)最長隧道(dao)——廣(guang)西桂中治旱樂灘水(shui)庫(ku)引(yin)水(shui)灌區(qu)工(gong)(gong)(gong)程北(bei)干渠TBM施工(gong)(gong)(gong)隧洞順利貫通(tong)。該隧道(dao)的(de)順利貫通(tong)標志著開敞(chang)式TBM（全斷面隧道(dao)掘進機，Tunnel Boring Machine）技術在(zai)復雜地(di)(di)(di)質條(tiao)件下取得(de)重(zhong)大突破(po)，在(zai)國(guo)內(nei)外首次成(cheng)功實現(xian)了在(zai)巖(yan)溶(rong)地(di)(di)(di)區(qu)獨頭(tou)掘進11.9km的(de)先(xian)例，為多項巖(yan)溶(rong)區(qu)重(zhong)大課題研究(jiu)、同(tong)類(lei)工(gong)(gong)(gong)程施工(gong)(gong)(gong)提(ti)供了可借鑒的(de)經(jing)驗，也標志著TBM技術在(zai)廣(guang)西首次成(cheng)功應用，廣(guang)西巖(yan)溶(rong)地(di)(di)(di)區(qu)勘察設計技術邁上新臺階。

據(ju)了(le)(le)解，廣(guang)西桂(gui)中(zhong)治旱樂灘水庫引(yin)(yin)水灌區(qu)工(gong)程(cheng)主要位(wei)于廣(guang)西來(lai)賓市紅(hong)水河兩(liang)岸，設(she)計引(yin)(yin)水灌溉面積為128.79萬畝，屬大型灌區(qu)，由廣(guang)西金投(tou)集(ji)團(tuan)下屬廣(guang)西壯族自(zi)治區(qu)水利電力(li)勘測(ce)設(she)計研究院有限(xian)責任公司(si)勘測(ce)設(she)計。在項目施工(gong)前(qian)期，設(she)計單位(wei)通(tong)過多(duo)(duo)種勘探試驗手段、先進(jin)的物探設(she)備及(ji)綜合分析方法，查明了(le)(le)工(gong)程(cheng)區(qu)巖(yan)(yan)溶(rong)發育(yu)特征，將隧洞(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(le)(le)強巖(yan)(yan)溶(rong)發育(yu)區(qu)和(he)地下暗河，成功解決了(le)(le)隧洞(dong)(dong)埋(mai)深大，地下水位(wei)高等存在諸多(duo)(duo)地質問題(ti)及(ji)施工(gong)難(nan)題(ti)，為隧洞(dong)(dong)成功貫通(tong)奠(dian)定(ding)了(le)(le)堅實(shi)基礎。工(gong)程(cheng)實(shi)施過程(cheng)中(zhong)，TBM掘進(jin)機快速、安全、環保的優(you)點(dian)得(de)到(dao)充分體(ti)現，Ⅳ類圍(wei)巖(yan)(yan)每(mei)月(yue)掘進(jin)400～450m，Ⅲ類圍(wei)巖(yan)(yan)每(mei)月(yue)掘進(jin)600m左右，最大達到(dao)720m，掘進(jin)方向定(ding)位(wei)精準，符合項目預期。

【責任編輯：語謙】