由北(bei)方(fang)重(zhong)工(gong)集團(tuan)有限公(gong)司為(wei)中(zhong)鐵二(er)十局(ju)集團(tuan)制造的(de)兩臺Φ8.83m大型(xing)土(tu)壓平(ping)衡盾構(gou)(gou)機相繼于2016年3月1日和3月10日在珠三角莞蕙城際軌道(dao)交通項(xiang)目6標(biao)段隧(sui)道(dao)施(shi)(shi)工(gong)中(zhong)順利貫通，成為(wei)在該(gai)區域同時(shi)使用北(bei)方(fang)重(zhong)工(gong)的(de)中(zhong)國品(pin)牌、德國品(pin)牌以及美(mei)國品(pin)牌盾構(gou)(gou)機進(jin)行(xing)施(shi)(shi)工(gong)的(de)4個標(biao)段中(zhong)施(shi)(shi)工(gong)速(su)度遙遙領先(xian)(xian)，率先(xian)(xian)實現貫通的(de)標(biao)段。
珠三角莞蕙(hui)城際軌道交通(tong)項目(mu)東莞段(duan)(duan)的(de)(de)地(di)(di)(di)質(zhi)情況(kuang)極(ji)(ji)(ji)為復雜(za)，首先穿(chuan)越(yue)地(di)(di)(di)下水十分(fen)豐富的(de)(de)原老河道，然后(hou)經(jing)(jing)過(guo)全(quan)(quan)斷面軟巖(yan)(yan)，再經(jing)(jing)過(guo)全(quan)(quan)斷面軟、硬(ying)交替(ti)巖(yan)(yan)層，最后(hou)經(jing)(jing)過(guo)全(quan)(quan)斷面硬(ying)巖(yan)(yan)，并且是(shi)施工難度(du)(du)最大(da)(da)的(de)(de)上軟下硬(ying)地(di)(di)(di)層，局(ju)部(bu)地(di)(di)(di)段(duan)(duan)巖(yan)(yan)石(shi)單(dan)軸抗壓強度(du)(du)高達(da)200MPa。6標段(duan)(duan)為東莞市大(da)(da)朗鎮繁華老城區，地(di)(di)(di)面建筑物密集，覆蓋率達(da)90%，管網(wang)交錯復雜(za)，存(cun)在大(da)(da)量土坯磚瓦(wa)房，存(cun)在大(da)(da)量未探明地(di)(di)(di)質(zhi)情況(kuang)地(di)(di)(di)段(duan)(duan)，對地(di)(di)(di)面及建筑物沉降要求極(ji)(ji)(ji)高，掘(jue)進難度(du)(du)極(ji)(ji)(ji)大(da)(da)，對施工安全(quan)(quan)要求極(ji)(ji)(ji)高，對盾(dun)構機的(de)(de)穩(wen)定(ding)性和可(ke)靠(kao)性要求極(ji)(ji)(ji)高。
復雜的地質和施(shi)工(gong)條件(jian)同時(shi)考驗著施(shi)工(gong)技(ji)術和盾(dun)(dun)構機的性能。在(zai)穿(chuan)越建筑物密集區時(shi)要確保盾(dun)(dun)構機勻(yun)速(su)通(tong)過，對地面擾動小到微乎其微，更(geng)不(bu)(bu)能有(you)頻繁和長時(shi)間停機，那(nei)樣將會造(zao)成地表沉降和尾盾(dun)(dun)卡死等不(bu)(bu)利情況。
中(zhong)鐵(tie)二(er)十局憑借豐富的(de)施工(gong)(gong)(gong)管理經驗對(dui)(dui)各個標(biao)段(duan)的(de)施工(gong)(gong)(gong)均做出(chu)了(le)周密(mi)策(ce)(ce)劃和(he)科學安排，對(dui)(dui)各盾(dun)構(gou)機(ji)設(she)備(bei)制(zhi)(zhi)造(zao)廠家及設(she)備(bei)服務均提出(chu)了(le)保障要(yao)求，因為再好的(de)施工(gong)(gong)(gong)技(ji)術(shu)和(he)管理也(ye)需要(yao)盾(dun)構(gou)機(ji)設(she)備(bei)性(xing)(xing)能(neng)質(zhi)量(liang)來支(zhi)撐和(he)保證。鑒于該(gai)(gai)施工(gong)(gong)(gong)區域特殊的(de)施工(gong)(gong)(gong)難度(du)，中(zhong)鐵(tie)二(er)十局在施工(gong)(gong)(gong)剛開始的(de)階段(duan)，對(dui)(dui)北(bei)(bei)方(fang)(fang)重(zhong)(zhong)工(gong)(gong)(gong)既有信(xin)心(xin)又有擔心(xin)。有信(xin)心(xin)的(de)是(shi)(shi)因為北(bei)(bei)方(fang)(fang)重(zhong)(zhong)工(gong)(gong)(gong)以往的(de)業績證明能(neng)夠(gou)擔當起此難點工(gong)(gong)(gong)程的(de)重(zhong)(zhong)任(ren)，有擔心(xin)是(shi)(shi)因為面對(dui)(dui)“中(zhong)國制(zhi)(zhi)造(zao)”習(xi)慣性(xing)(xing)產生的(de)想(xiang)法，特別(bie)是(shi)(shi)該(gai)(gai)項目是(shi)(shi)“中(zhong)國制(zhi)(zhi)造(zao)”與(yu)“歐美(mei)制(zhi)(zhi)造(zao)”在同臺(tai)競技(ji)。但(dan)隨著工(gong)(gong)(gong)程的(de)推進(jin)、隧道(dao)的(de)掘進(jin)，二(er)十局對(dui)(dui)北(bei)(bei)方(fang)(fang)重(zhong)(zhong)工(gong)(gong)(gong)越(yue)來越(yue)有信(xin)心(xin)，對(dui)(dui)北(bei)(bei)方(fang)(fang)重(zhong)(zhong)工(gong)(gong)(gong)的(de)“中(zhong)國造(zao)”盾(dun)構(gou)機(ji)越(yue)來越(yue)有信(xin)心(xin)。北(bei)(bei)方(fang)(fang)重(zhong)(zhong)工(gong)(gong)(gong)現(xian)場服務團隊(dui)與(yu)二(er)十局項目團隊(dui)密(mi)切(qie)配(pei)合，超(chao)前策(ce)(ce)劃制(zhi)(zhi)定(ding)施工(gong)(gong)(gong)方(fang)(fang)案和(he)問題(ti)預案，使得(de)設(she)備(bei)與(yu)施工(gong)(gong)(gong)實現(xian)了(le)完(wan)美(mei)結合。同時(shi)，更為關(guan)鍵的(de)是(shi)(shi)盾(dun)構(gou)機(ji)設(she)備(bei)可(ke)靠穩定(ding)的(de)表現(xian)使得(de)6標(biao)段(duan)率先完(wan)成掘進(jin)任(ren)務，創造(zao)了(le)東莞段(duan)月掘進(jin)131環(209.6m)的(de)月記錄，整(zheng)個工(gong)(gong)(gong)期領先國外設(she)備(bei)約1年。
北方重(zhong)(zhong)工(gong)盾(dun)構機在(zai)廣東東莞(guan)項目施工(gong)中(zhong)的(de)表(biao)(biao)現(xian)，再一次體現(xian)了“中(zhong)國制(zhi)造(zao)(zao)”的(de)水(shui)平，證明著我國在(zai)重(zhong)(zhong)大裝(zhuang)備(bei)、高端成套技術領域已經躋(ji)身(shen)于(yu)(yu)世(shi)界(jie)先進(jin)(jin)行列，在(zai)一些方面(mian)已處于(yu)(yu)世(shi)界(jie)領先水(shui)平。北方重(zhong)(zhong)工(gong)的(de)盾(dun)構機和隧(sui)道掘進(jin)(jin)裝(zhuang)備(bei)將繼續(xu)義無反顧，代表(biao)(biao)我國裝(zhuang)備(bei)制(zhi)造(zao)(zao)業不(bu)斷沖擊世(shi)界(jie)先進(jin)(jin)，在(zai)全球市場的(de)搏擊中(zhong)勇往直前!