文章來源：中國鐵(tie)路工程總公(gong)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(tie)(tie)(tie)(tie)隧道集團承擔的(de)(de)北(bei)京(jing)鐵(tie)(tie)(tie)(tie)路(lu)地(di)(di)下(xia)(xia)(xia)直徑(jing)線(xian)盾(dun)構(gou)管段施(shi)工(gong)(gong)(gong)(gong)任(ren)務，是目前(qian)國(guo)內第一條城市(shi)地(di)(di)下(xia)(xia)(xia)全(quan)(quan)電氣化鐵(tie)(tie)(tie)(tie)路(lu)隧道工(gong)(gong)(gong)(gong)程，其施(shi)工(gong)(gong)(gong)(gong)難(nan)度和(he)安(an)全(quan)(quan)風險(xian)被北(bei)京(jing)市(shi)政府和(he)鐵(tie)(tie)(tie)(tie)道部列為北(bei)京(jing)“風險(xian)最高(gao)(gao)、難(nan)度最大的(de)(de)在(zai)建地(di)(di)下(xia)(xia)(xia)工(gong)(gong)(gong)(gong)程”。中鐵(tie)(tie)(tie)(tie)隧道集團參(can)建人員從進(jin)點施(shi)工(gong)(gong)(gong)(gong)以來，嚴格按照(zhao)“高(gao)(gao)標(biao)準(zhun)(zhun)、講(jiang)科學(xue)、不懈怠”標(biao)準(zhun)(zhun)化作(zuo)業要(yao)求(qiu)，精心組織，科學(xue)施(shi)工(gong)(gong)(gong)(gong)，頑(wan)強拼搏(bo)，先(xian)后克服了施(shi)工(gong)(gong)(gong)(gong)地(di)(di)面荷載(zai)復(fu)雜，施(shi)工(gong)(gong)(gong)(gong)均(jun)為砂卵石地(di)(di)質、下(xia)(xia)(xia)穿護城河、天寧寺(si)橋(qiao)、西便門橋(qiao)等施(shi)工(gong)(gong)(gong)(gong)困難(nan)，在(zai)確保安(an)全(quan)(quan)質量的(de)(de)前(qian)提下(xia)(xia)(xia)創造了國(guo)內最大直徑(jing)盾(dun)構(gou)地(di)(di)下(xia)(xia)(xia)獨頭掘(jue)進(jin)205.25米(mi)的(de)(de)施(shi)工(gong)(gong)(gong)(gong)新紀錄(lu)，為安(an)全(quan)(quan)、優質、快速建成北(bei)京(jing)鐵(tie)(tie)(tie)(tie)路(lu)地(di)(di)下(xia)(xia)(xia)直徑(jing)線(xian)5175米(mi)盾(dun)構(gou)施(shi)工(gong)(gong)(gong)(gong)任(ren)務提供了可靠的(de)(de)技(ji)術參(can)數(shu)和(he)寶貴的(de)(de)施(shi)工(gong)(gong)(gong)(gong)經驗(yan)。