文章來源：中國鐵道建筑總公司 發(fa)布時間：2017-04-15
4月13日上午(wu)9點(dian)半，位(wei)于(yu)北(bei)(bei)京延慶區八達嶺(ling)長城附近的3號施(shi)工(gong)斜井傳(chuan)出一陣爆(bao)破的轟鳴聲，在北(bei)(bei)京首個PPP公路項目興延高(gao)速公路的施(shi)工(gong)現(xian)場，北(bei)(bei)京高(gao)速公路第(di)一長隧(sui)(sui)——石峽隧(sui)(sui)道正(zheng)式進洞施(shi)工(gong)。這也是全線5座(zuo)(zuo)隧(sui)(sui)道中第(di)一座(zuo)(zuo)正(zheng)式施(shi)工(gong)的隧(sui)(sui)道。
北京市交委主任周正宇、延(yan)慶區(qu)區(qu)長(chang)穆鵬、昌平區(qu)區(qu)長(chang)張燕(yan)友，興延(yan)公(gong)司(si)董事長(chang)譚振武、總(zong)經(jing)理郭建(jian)材(cai)，中(zhong)國鐵建(jian)股份(fen)有限公(gong)司(si)總(zong)經(jing)濟師(shi)孫公(gong)新，十(shi)四局集團(tuan)公(gong)司(si)副總(zong)經(jing)理姜(jiang)偉、十(shi)四局二公(gong)司(si)執行董事、總(zong)經(jing)理孫亮，連同駐京各主要媒體近百(bai)人齊聚現(xian)場，共同見證了這一歷史時刻。
在(zai)全長(chang)(chang)42.2公(gong)里的(de)興延高速(su)公(gong)路(lu)中，全長(chang)(chang) 5870米的(de)石(shi)峽隧道是(shi)一(yi)項(xiang)不折不扣(kou)的(de)“卡脖子”工(gong)程，該隧道不僅是(shi)全線第(di)一(yi)長(chang)(chang)隧，同時，也是(shi)北(bei)京市高速(su)公(gong)路(lu)第(di)一(yi)長(chang)(chang)隧。該隧道的(de)施工(gong)進(jin)度，將(jiang)直接決定興延高速(su)公(gong)路(lu)能否按期通車。
作為2019年北(bei)京世園會(hui)和2022年北(bei)京-張家口(kou)冬奧(ao)會(hui)的配(pei)套工程，2018年底實現(xian)“保通”目標不僅是項目取得成功的“底線”，更是一項事(shi)關十四局集(ji)團形象的政治任務(wu)。
據了解，該隧道采用雙向六車道設計(ji)，為大(da)斷(duan)面隧道，施工難度高(gao)(gao)，同時，施工過程(cheng)中(zhong)，還面臨埋深(shen)淺、“巖(yan)爆”隱患多、斜井與正洞高(gao)(gao)差(cha)大(da)、7次下(xia)穿長(chang)城等施工不利因素(su)，安全風險極(ji)大(da)。
按照工(gong)(gong)(gong)(gong)(gong)期計劃，2018年4月底，該隧道(dao)將(jiang)完全(quan)貫通。為加快施工(gong)(gong)(gong)(gong)(gong)進度(du)，經過嚴(yan)密的論證(zheng)，負責隧道(dao)施工(gong)(gong)(gong)(gong)(gong)的十四局集團(tuan)施工(gong)(gong)(gong)(gong)(gong)總承包部決定采用進出口同時掘(jue)進施工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)法，并(bing)在(zai)中段增設3處斜井，全(quan)面開(kai)工(gong)(gong)(gong)(gong)(gong)后，5個施工(gong)(gong)(gong)(gong)(gong)地點將(jiang)同時“開(kai)花(hua)”，齊頭(tou)并(bing)進，此舉將(jiang)有效緩解工(gong)(gong)(gong)(gong)(gong)期壓(ya)力。
隧道率先(xian)開工(gong)(gong)(gong)，為后續施(shi)工(gong)(gong)(gong)快速推(tui)進奠定了良好開局(ju)，隨(sui)著(zhu)夏季施(shi)工(gong)(gong)(gong)黃金季節(jie)的到來(lai)，十四局(ju)集團總承包(bao)部將進一步(bu)優化施(shi)工(gong)(gong)(gong)組織，全(quan)力確保(bao)興延高(gao)速公(gong)路(lu)按期(qi)開通。