文章來源(yuan)：中國(guo)鐵路工程總公司 發(fa)布時間：2010-01-19
1月13日，中國中鐵施工的大麗鐵路重點控制工程——筆架山1#隧道歷經38個月的艱苦奮戰勝利貫通。
大(da)麗鐵路筆(bi)架山1#隧(sui)道(dao)全長(chang)3850米(mi)，位于云南省大(da)理白族自治州境內，是(shi)大(da)理至麗江鐵路全線(xian)重難(nan)(nan)點(dian)控制性工(gong)(gong)(gong)(gong)(gong)程，也是(shi)大(da)麗線(xian)地質最為復雜(za)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)條件最難(nan)(nan)的(de)重難(nan)(nan)點(dian)隧(sui)道(dao)之(zhi)一，地處滇西(xi)高(gao)原地震構(gou)造帶(dai)上，地質復雜(za)多(duo)變，集(ji)斷層破(po)(po)碎帶(dai)、突泥涌(yong)水為一體，隧(sui)道(dao)洞(dong)(dong)身穿(chuan)越區域(yu)性斷裂帶(dai)，地形條件艱(jian)險，洞(dong)(dong)口山勢陡峭(qiao)，施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)場地狹窄。施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)中精心優化進(jin)洞(dong)(dong)及施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)方(fang)案(an)，科(ke)學(xue)組織(zhi)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)，開展科(ke)技(ji)攻關(guan)，先后(hou)攻克了(le)玄武巖(yan)夾(jia)凝灰巖(yan)的(de)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)風(feng)險大(da)的(de)斷層破(po)(po)碎帶(dai)，戰勝了(le)暴雨等(deng)自然災(zai)害給(gei)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)生產帶(dai)來的(de)重重困難(nan)(nan)，破(po)(po)解了(le)在遇突發性涌(yong)水涌(yong)泥、圍巖(yan)偏(pian)壓(ya)引起的(de)變形情況下施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)技(ji)術難(nan)(nan)題。實現了(le)春(chun)節前(qian)隧(sui)道(dao)的(de)精確貫通(tong)。