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4月26日，由蜀(shu)道高速(su)集(ji)團川黔(qian)公司投資建(jian)設的古金(jin)(jin)高速(su)草壩(ba)隧(sui)道右(you)線(xian)(xian)順利貫通，至此(ci)古金(jin)(jin)高速(su)全線(xian)(xian)隧(sui)道開挖進尺突(tu)破33000米(mi)。
草壩隧(sui)道位(wei)于(yu)瀘州(zhou)市古藺縣龍山鎮，隧(sui)址(zhi)區(qu)為(wei)川東南喀斯(si)特地貌區(qu)，隧(sui)道右洞全長1286米(mi)(mi)，V級(ji)圍(wei)巖(yan)長度(du)為(wei)418米(mi)(mi)，占比(bi)為(wei)32.5%。草壩隧(sui)道屬于(yu)單向三車道大跨(kua)徑隧(sui)道，最大斷(duan)面(mian)面(mian)積(ji)209.24㎡，最大跨(kua)度(du)20.67米(mi)(mi)，地質條(tiao)件復雜，巖(yan)溶發育，溶洞泥質填充較多、圍(wei)巖(yan)節理裂隙發育。
草壩隧(sui)(sui)道(dao)(dao)(dao)巖(yan)溶發(fa)育，圍巖(yan)極其破(po)(po)碎(sui)，易發(fa)生涌突水、塌(ta)方(fang)災害，施工(gong)(gong)(gong)難(nan)度(du)大、技術(shu)要求高(gao)、安(an)全(quan)風(feng)險系數高(gao)、施工(gong)(gong)(gong)控(kong)制(zhi)(zhi)難(nan)。面對隧(sui)(sui)道(dao)(dao)(dao)施工(gong)(gong)(gong)過程(cheng)中地(di)質(zhi)(zhi)復雜、制(zhi)(zhi)約因素多等困難(nan)，川(chuan)黔(qian)公司多措并舉，不斷加(jia)大施工(gong)(gong)(gong)過程(cheng)中的(de)管控(kong)力度(du)，嚴控(kong)施工(gong)(gong)(gong)程(cheng)序(xu)、規范施工(gong)(gong)(gong)流程(cheng)，加(jia)強光(guang)面爆破(po)(po)、噴(pen)射混(hun)凝土質(zhi)(zhi)量及各工(gong)(gong)(gong)序(xu)控(kong)制(zhi)(zhi)，同時為確(que)保安(an)全(quan)，堅持“先探后掘”，做(zuo)好超前地(di)質(zhi)(zhi)預報和(he)監控(kong)測量、超前地(di)質(zhi)(zhi)鉆孔和(he)圍巖(yan)判(pan)定識別等工(gong)(gong)(gong)作的(de)準確(que)性，針對部分段(duan)落掌子面圍巖(yan)呈塊礫石堆積體、圍巖(yan)自穩能力差的(de)情況(kuang)，制(zhi)(zhi)定切實(shi)可行的(de)施工(gong)(gong)(gong)方(fang)案(an)，實(shi)現洞身使用管棚支(zhi)護(hu)施工(gong)(gong)(gong)長度(du)220米，為隧(sui)(sui)道(dao)(dao)(dao)支(zhi)護(hu)作業施工(gong)(gong)(gong)提供科學、有效(xiao)的(de)數據及技術(shu)支(zhi)持。同時，積極推(tui)廣新工(gong)(gong)(gong)藝、新工(gong)(gong)(gong)法，引進新設備、先進機械，全(quan)力確(que)保隧(sui)(sui)道(dao)(dao)(dao)施工(gong)(gong)(gong)順利推(tui)進。在(zai)此(ci)基礎上(shang)，公司加(jia)強過程(cheng)監管督導，安(an)排(pai)業主代表(biao)進行跟(gen)班(ban)作業，建立“隱患責任清單(dan)”和(he)“安(an)全(quan)生產重大風(feng)險防(fang)控(kong)清單(dan)”，堅持系統(tong)治理和(he)源頭(tou)防(fang)范，落實(shi)安(an)全(quan)網格員制(zhi)(zhi)度(du)，從(cong)源頭(tou)上(shang)防(fang)范化解重大安(an)全(quan)風(feng)險，確(que)保隧(sui)(sui)道(dao)(dao)(dao)安(an)全(quan)順利貫通。
著手處是(shi)自強不息(xi)，成(cheng)就處是(shi)至誠無(wu)妄。此次草(cao)壩隧道(dao)右洞(dong)順利(li)貫通(tong)不僅鼓舞了(le)全(quan)體(ti)參建人員的士氣，更(geng)為確保(bao)古(gu)金(jin)(jin)高(gao)(gao)速按(an)期順利(li)建成(cheng)奠(dian)定了(le)堅實基礎。全(quan)體(ti)參建人員必將繼續鼓足干勁、攻堅克難(nan)，緊盯重點節點和關鍵任務，優化施(shi)工組(zu)織和管理，持(chi)續加強安全(quan)施(shi)工與品質工程(cheng)建設，穩步推進古(gu)金(jin)(jin)高(gao)(gao)速施(shi)工進度，力爭高(gao)(gao)質量完成(cheng)古(gu)金(jin)(jin)高(gao)(gao)速2023年底(di)建成(cheng)目標任務。 |
