文(wen)章來源：中國鐵路(lu)工程總公司 發(fa)布時間：2009-12-12
12月7日，中(zhong)鐵七局廣梧高(gao)(gao)速公(gong)路河(he)口至雙鳳段(duan)第八合同段(duan)五指(zhi)山(shan)雙孔隧(sui)道(dao)(dao)(dao)(dao)繼左(zuo)線(xian)(xian)(xian)貫(guan)通一個(ge)月后，右線(xian)(xian)(xian)順利貫(guan)通。五指(zhi)山(shan)隧(sui)道(dao)(dao)(dao)(dao)位于廣東省云浮市西部(bu)山(shan)區，進、出口分別(bie)設(she)(she)在云安(an)縣(xian)的高(gao)(gao)村鎮和(he)(he)郁(yu)南縣(xian)的東壩鎮，雙洞(dong)四(si)車道(dao)(dao)(dao)(dao)，左(zuo)右線(xian)(xian)(xian)隧(sui)道(dao)(dao)(dao)(dao)分離布(bu)設(she)(she)，左(zuo)線(xian)(xian)(xian)長1233米(mi)，右線(xian)(xian)(xian)1249米(mi)，分布(bu)在直線(xian)(xian)(xian)、緩和(he)(he)曲線(xian)(xian)(xian)、圓曲線(xian)(xian)(xian)上，洞(dong)身(shen)相繼通過Ⅱ、Ⅲ、Ⅳ、Ⅴ級(ji)圍巖(yan)，隧(sui)道(dao)(dao)(dao)(dao)自然條件差(cha)，技術含(han)量和(he)(he)施(shi)工(gong)難度高(gao)(gao)。施(shi)工(gong)中(zhong)，中(zhong)鐵七局科學管理，精心施(shi)工(gong)，嚴把每(mei)個(ge)工(gong)作環節(jie)，注重科技創新，優化(hua)施(shi)工(gong)技術方案，通過TSB地(di)(di)質(zhi)雷達超(chao)前預報和(he)(he)光面爆破隧(sui)道(dao)(dao)(dao)(dao)開挖技術等科技攻(gong)關，攻(gong)克了(le)(le)不良地(di)(di)質(zhi)等難題，安(an)全平穩(wen)地(di)(di)實現(xian)了(le)(le)雙線(xian)(xian)(xian)貫(guan)通。