文章來源：中國鐵路工(gong)程總(zong)公司 發(fa)布時間(jian)：2010-05-27
5月20日，中(zhong)國鐵路(lu)工(gong)(gong)程總公(gong)司中(zhong)鐵隧(sui)(sui)道(dao)施(shi)工(gong)(gong)的(de)(de)永武高速公(gong)路(lu)A8標控(kong)制性(xing)工(gong)(gong)程橫山隧(sui)(sui)道(dao)右(you)線勝(sheng)利(li)貫通。橫山隧(sui)(sui)道(dao)全(quan)長2940米，地(di)質(zhi)(zhi)條件差，以Ⅳ、Ⅴ級(ji)圍巖(yan)為主，圍巖(yan)節理裂隙發育，穩定性(xing)差，隧(sui)(sui)道(dao)穿過7條斷(duan)層(ceng)(ceng)，施(shi)工(gong)(gong)難(nan)度(du)極大。施(shi)工(gong)(gong)中(zhong)遭遇了千(qian)枚(mei)巖(yan)、千(qian)枚(mei)狀粉砂巖(yan)、印支期(qi)侵入花崗巖(yan)、斷(duan)層(ceng)(ceng)等多種(zhong)不(bu)良(liang)地(di)質(zhi)(zhi)，是永武高速公(gong)路(lu)地(di)質(zhi)(zhi)條件最復雜、施(shi)工(gong)(gong)風險(xian)(xian)最高的(de)(de)隧(sui)(sui)道(dao)之(zhi)一。自開工(gong)(gong)以來，中(zhong)鐵隧(sui)(sui)道(dao)精心(xin)策劃、科學組織，規范施(shi)工(gong)(gong)，有效控(kong)制作業循環時間，超(chao)前預測地(di)質(zhi)(zhi)情況，參建(jian)員工(gong)(gong)齊(qi)心(xin)協力，采用短進尺(chi)、弱爆破，穩扎(zha)穩打的(de)(de)方(fang)式，不(bu)畏艱險(xian)(xian)、奮(fen)力拼搏，多次戰(zhan)勝(sheng)涌(yong)水，順利(li)通過7條斷(duan)層(ceng)(ceng)，取得了在極其(qi)復雜的(de)(de)地(di)質(zhi)(zhi)條件下，隧(sui)(sui)道(dao)開挖無坍塌、無安全(quan)事故的(de)(de)好成績。