文章來(lai)源：中國鐵路工程總公司 發布時間(jian)：2015-04-22
4月18日(ri)，中(zhong)鐵二局參建(jian)的國內最(zui)長海底公(gong)路隧(sui)道(dao)——青島(dao)膠州(zhou)灣(wan)海底隧(sui)道(dao)正式竣工(gong)(gong)運營(ying)。青島(dao)膠州(zhou)灣(wan)隧(sui)道(dao)全(quan)長7800米，長度為中(zhong)國第一(yi)、世界(jie)第三(san)，是我國斷面最(zui)大、埋深最(zui)淺、施(shi)(shi)工(gong)(gong)難度最(zui)大的城(cheng)市隧(sui)道(dao)。中(zhong)鐵二局在(zai)施(shi)(shi)工(gong)(gong)中(zhong)成功突破(po)了覆蓋層薄、海底隧(sui)道(dao)超前(qian)精準預報、微(wei)震爆破(po)控制(zhi)、不同(tong)地質(zhi)條件超前(qian)注漿、匝道(dao)和(he)主隧(sui)道(dao)匯合段大斷面施(shi)(shi)工(gong)(gong)等技(ji)(ji)術難題，取得各類(lei)技(ji)(ji)術創新、工(gong)(gong)藝改(gai)進10余項，為參建(jian)同(tong)類(lei)工(gong)(gong)程積(ji)累了寶貴的技(ji)(ji)術經(jing)驗。該隧(sui)道(dao)的總體施(shi)(shi)工(gong)(gong)技(ji)(ji)術要求(qiu)目前(qian)已經(jing)處(chu)于國際(ji)領先水平。