文(wen)章來(lai)源：中國(guo)鐵路工程總公司(si) 發(fa)布時間(jian)：2009-12-12
12月7日，中(zhong)鐵七局廣梧高(gao)速公路河口至雙(shuang)(shuang)鳳段第八合(he)同段五指山(shan)雙(shuang)(shuang)孔(kong)隧道繼左線(xian)貫通(tong)(tong)一個(ge)月后，右線(xian)順(shun)利貫通(tong)(tong)。五指山(shan)隧道位于廣東省云浮市西部山(shan)區，進、出口分別設在云安縣的高(gao)村鎮(zhen)(zhen)和郁南縣的東壩鎮(zhen)(zhen)，雙(shuang)(shuang)洞四車道，左右線(xian)隧道分離布(bu)設，左線(xian)長1233米(mi)，右線(xian)1249米(mi)，分布(bu)在直線(xian)、緩和曲(qu)線(xian)、圓(yuan)曲(qu)線(xian)上，洞身相繼通(tong)(tong)過Ⅱ、Ⅲ、Ⅳ、Ⅴ級圍巖，隧道自然條件差，技(ji)術含量和施(shi)工(gong)(gong)難度高(gao)。施(shi)工(gong)(gong)中(zhong)，中(zhong)鐵七局科學管理，精心施(shi)工(gong)(gong)，嚴(yan)把每個(ge)工(gong)(gong)作環節(jie)，注(zhu)重科技(ji)創新，優(you)化施(shi)工(gong)(gong)技(ji)術方案，通(tong)(tong)過TSB地(di)質(zhi)雷達超前(qian)預報和光(guang)面(mian)爆破隧道開(kai)挖技(ji)術等科技(ji)攻關，攻克(ke)了不良地(di)質(zhi)等難題(ti)，安全平穩地(di)實(shi)現了雙(shuang)(shuang)線(xian)貫通(tong)(tong)。