文章來源：中國鐵路工程總公司 發布時間：2010-12-18
11月25日，由中國鐵路工程總公司所屬中鐵隧道集團承建的北京鐵路地下直徑線二標5175米盾構施工管段，通過參建人員的精心組織、科學施工，創造了國內城市繁華地段最大直徑盾構地下獨頭掘進205.25米的施工新紀錄。
中鐵隧道集團(tuan)(tuan)承擔的(de)(de)北(bei)(bei)京(jing)鐵路地(di)(di)(di)下(xia)(xia)直徑線盾構管段施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)任務，是目前國(guo)內(nei)(nei)第一條城市地(di)(di)(di)下(xia)(xia)全(quan)(quan)電氣化鐵路隧道工(gong)(gong)(gong)(gong)(gong)程，其施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)難度(du)和安(an)全(quan)(quan)風險(xian)被(bei)北(bei)(bei)京(jing)市政府和鐵道部(bu)列為北(bei)(bei)京(jing)“風險(xian)最(zui)高、難度(du)最(zui)大(da)的(de)(de)在建(jian)地(di)(di)(di)下(xia)(xia)工(gong)(gong)(gong)(gong)(gong)程”。中鐵隧道集團(tuan)(tuan)參(can)建(jian)人員從進點施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)以來，嚴格按(an)照“高標(biao)準(zhun)、講科學、不懈怠”標(biao)準(zhun)化作業要求，精心組織，科學施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)，頑強拼搏，先(xian)后克服(fu)了施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)地(di)(di)(di)面荷載復(fu)雜，施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)均為砂卵石(shi)地(di)(di)(di)質(zhi)(zhi)、下(xia)(xia)穿護城河、天寧寺(si)橋、西便門橋等施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)困難，在確保安(an)全(quan)(quan)質(zhi)(zhi)量(liang)的(de)(de)前提下(xia)(xia)創造了國(guo)內(nei)(nei)最(zui)大(da)直徑盾構地(di)(di)(di)下(xia)(xia)獨頭掘進205.25米(mi)的(de)(de)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)新紀錄，為安(an)全(quan)(quan)、優質(zhi)(zhi)、快速建(jian)成(cheng)北(bei)(bei)京(jing)鐵路地(di)(di)(di)下(xia)(xia)直徑線5175米(mi)盾構施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)任務提供了可靠的(de)(de)技術參(can)數(shu)和寶貴的(de)(de)施(shi)(shi)(shi)(shi)工(gong)(gong)(gong)(gong)(gong)經驗。