文(wen)章(zhang)來源：中國鐵路工程總公司(si) 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(tie)隧(sui)道集(ji)團承擔的(de)北京(jing)鐵(tie)路地(di)(di)下(xia)(xia)直徑(jing)線(xian)盾構(gou)(gou)管段施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)任務，是目(mu)前(qian)國內第一條城市地(di)(di)下(xia)(xia)全(quan)(quan)電氣化(hua)(hua)鐵(tie)路隧(sui)道工(gong)(gong)(gong)(gong)程，其施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)難度和安全(quan)(quan)風險被(bei)北京(jing)市政府(fu)和鐵(tie)道部列為(wei)(wei)北京(jing)“風險最(zui)高、難度最(zui)大(da)的(de)在建地(di)(di)下(xia)(xia)工(gong)(gong)(gong)(gong)程”。中鐵(tie)隧(sui)道集(ji)團參建人員從進(jin)點施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)以來，嚴格按照“高標準、講科(ke)(ke)學(xue)、不懈怠”標準化(hua)(hua)作業要求，精心組織，科(ke)(ke)學(xue)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)，頑強拼搏，先后克服了施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)地(di)(di)面荷(he)載復雜，施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)均為(wei)(wei)砂卵石地(di)(di)質、下(xia)(xia)穿護城河、天寧寺橋(qiao)、西(xi)便門(men)橋(qiao)等施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)困難，在確保安全(quan)(quan)質量的(de)前(qian)提下(xia)(xia)創造了國內最(zui)大(da)直徑(jing)盾構(gou)(gou)地(di)(di)下(xia)(xia)獨頭掘(jue)進(jin)205.25米(mi)的(de)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)新紀錄，為(wei)(wei)安全(quan)(quan)、優質、快(kuai)速(su)建成北京(jing)鐵(tie)路地(di)(di)下(xia)(xia)直徑(jing)線(xian)5175米(mi)盾構(gou)(gou)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)任務提供了可靠(kao)的(de)技術(shu)參數(shu)和寶貴的(de)施(shi)(shi)(shi)工(gong)(gong)(gong)(gong)經驗。