文章來(lai)源：中國(guo)鐵路工程(cheng)總公司 發布時間：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)(da)麗鐵路(lu)筆架山1#隧道(dao)全長(chang)3850米，位于云南省大(da)(da)理白族自(zi)治州(zhou)境(jing)內，是(shi)大(da)(da)理至麗江鐵路(lu)全線(xian)重(zhong)難(nan)(nan)點(dian)控制性(xing)工(gong)(gong)(gong)(gong)程，也是(shi)大(da)(da)麗線(xian)地(di)(di)質最為(wei)復雜施(shi)(shi)工(gong)(gong)(gong)(gong)條(tiao)件(jian)最難(nan)(nan)的(de)重(zhong)難(nan)(nan)點(dian)隧道(dao)之一(yi)，地(di)(di)處滇西高原地(di)(di)震構造帶上，地(di)(di)質復雜多變，集斷(duan)層破碎(sui)帶、突泥涌水(shui)為(wei)一(yi)體，隧道(dao)洞(dong)(dong)身(shen)穿越區域性(xing)斷(duan)裂帶，地(di)(di)形條(tiao)件(jian)艱險，洞(dong)(dong)口山勢陡峭，施(shi)(shi)工(gong)(gong)(gong)(gong)場地(di)(di)狹窄。施(shi)(shi)工(gong)(gong)(gong)(gong)中精心優化進洞(dong)(dong)及施(shi)(shi)工(gong)(gong)(gong)(gong)方案，科學組織施(shi)(shi)工(gong)(gong)(gong)(gong)，開(kai)展科技攻(gong)(gong)關，先后攻(gong)(gong)克了玄武(wu)巖夾凝灰巖的(de)施(shi)(shi)工(gong)(gong)(gong)(gong)風險大(da)(da)的(de)斷(duan)層破碎(sui)帶，戰勝了暴雨等自(zi)然災害給施(shi)(shi)工(gong)(gong)(gong)(gong)生產帶來的(de)重(zhong)重(zhong)困難(nan)(nan)，破解了在遇突發(fa)性(xing)涌水(shui)涌泥、圍巖偏(pian)壓引起的(de)變形情況下施(shi)(shi)工(gong)(gong)(gong)(gong)技術難(nan)(nan)題(ti)。實現(xian)了春節前隧道(dao)的(de)精確貫通。