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8月(yue)19日(ri)上午11時，在(zai)四(si)川大學華西校區下穿人民(min)南(nan)路人行通(tong)道項目施工(gong)現場(chang)，隨(sui)著巨大的矩形盾構式(shi)頂掘機緩緩駛入接收井，由中鐵工(gong)程裝備集團有限公(gong)司(si)研制的世(shi)界**臺砂卵石地層矩形盾構式(shi)頂掘機成功實(shi)現洞通(tong)。

四川大學華西(xi)校區下(xia)穿人(ren)民南路(lu)人(ren)行通(tong)道(dao)項(xiang)目由(you)成都建(jian)(jian)工(gong)(gong)路(lu)橋建(jian)(jian)設有限公司承(cheng)建(jian)(jian)，項(xiang)目全(quan)長(chang)56米，施工(gong)(gong)段位(wei)于地(di)(di)(di)下(xia)約5米處，上跨正在運(yun)營的(de)地(di)(di)(di)鐵1號線(xian)，距地(di)(di)(di)鐵隧道(dao)頂板僅(jin)3.1米；與地(di)(di)(di)面之間還有約15條各類(lei)市政管線(xian)，距**近(jin)的(de)一條管線(xian)僅(jin)0.5米，且地(di)(di)(di)層多粉質粘土、細砂、卵石，施工(gong)(gong)必須在地(di)(di)(di)鐵和眾多市政管線(xian)的(de)夾縫(feng)中(zhong)(zhong)成功實現“三保(bao)”,即:上保(bao)路(lu)面交(jiao)通(tong)不(bu)中(zhong)(zhong)斷，中(zhong)(zhong)保(bao)各類(lei)市政管線(xian)不(bu)滲漏，下(xia)保(bao)地(di)(di)(di)鐵1號線(xian)運(yun)營不(bu)停(ting)止，可謂是迄(qi)今為止四川省乃至全(quan)國市政建(jian)(jian)設史上**復雜的(de)通(tong)道(dao)。

為確(que)保(bao)(bao)(bao)工(gong)(gong)程順利實現洞通，中鐵(tie)工(gong)(gong)程裝備(bei)集團(tuan)在(zai)此臺頂(ding)(ding)(ding)掘機的(de)設(she)(she)計(ji)(ji)研發上充分考慮成(cheng)都(dou)地(di)區地(di)層(ceng)的(de)復(fu)雜(za)性，融合了(le)(le)中鐵(tie)裝備(bei)在(zai)盾構(gou)機設(she)(she)計(ji)(ji)中的(de)成(cheng)熟理念和(he)**經驗。頂(ding)(ding)(ding)掘機主機采(cai)用多刀(dao)盤、開挖(wa)面(mian)(mian)全覆蓋設(she)(she)計(ji)(ji)，所有(you)(you)刀(dao)盤同(tong)平(ping)面(mian)(mian)布置，刀(dao)盤切(qie)削區域不相互交叉，同(tong)時(shi)(shi)(shi)配備(bei)高(gao)效的(de)渣土改良系統，可(ke)確(que)保(bao)(bao)(bao)復(fu)雜(za)地(di)層(ceng)施(shi)(shi)工(gong)(gong)地(di)質結(jie)構(gou)穩定(ding)，有(you)(you)效控制地(di)面(mian)(mian)沉(chen)降(jiang)，24小時(shi)(shi)(shi)內可(ke)向前(qian)掘進3至6米(mi)，與(yu)人工(gong)(gong)開挖(wa)施(shi)(shi)工(gong)(gong)相比縮(suo)短了(le)(le)三分之二工(gong)(gong)期(qi)(qi)，達(da)(da)到高(gao)效、快速、安(an)全的(de)施(shi)(shi)工(gong)(gong)要求(qiu)。該項(xiang)目自6月(yue)18日上午9時(shi)(shi)(shi)開始頂(ding)(ding)(ding)掘以來，期(qi)(qi)間(jian)頂(ding)(ding)(ding)掘機先后(hou)經歷了(le)(le)軟硬不均地(di)層(ceng)，洞穿(chuan)了(le)(le)全斷(duan)面(mian)(mian)大(da)粒(li)徑砂卵石地(di)層(ceng)、上部細沙(sha)下部砂卵石地(di)層(ceng)等復(fu)雜(za)狀況；其中，大(da)粒(li)徑砂卵石地(di)層(ceng)**大(da)粒(li)徑達(da)(da)到了(le)(le)400毫米(mi)，施(shi)(shi)工(gong)(gong)難度大(da)，對(dui)設(she)(she)備(bei)在(zai)施(shi)(shi)工(gong)(gong)過程中對(dui)地(di)層(ceng)擾(rao)動與(yu)沉(chen)降(jiang)要求(qiu)高(gao)。在(zai)施(shi)(shi)工(gong)(gong)過程中，中鐵(tie)工(gong)(gong)程裝備(bei)集團(tuan)有(you)(you)限公司充分發揮自身(shen)技術資源和(he)制造服(fu)務(wu)(wu)優勢，從設(she)(she)備(bei)管理、技術指(zhi)導、人員配備(bei)等方面(mian)(mian)制定(ding)了(le)(le)一整套(tao)施(shi)(shi)工(gong)(gong)保(bao)(bao)(bao)障措(cuo)施(shi)(shi)和(he)應急處置預案，實現了(le)(le)售(shou)后(hou)服(fu)務(wu)(wu)保(bao)(bao)(bao)姆式、全天(tian)候、無間(jian)隙，有(you)(you)力確(que)保(bao)(bao)(bao)項(xiang)目工(gong)(gong)期(qi)(qi)和(he)工(gong)(gong)程質量(liang)。

四川大(da)(da)學(xue)華西(xi)校區下穿(chuan)人民(min)南(nan)路(lu)人行通道項目(mu)的順(shun)利洞(dong)通不(bu)僅有效(xiao)緩解了川大(da)(da)華西(xi)醫學(xue)院附近區域停車難、交通擁堵、市民(min)就醫不(bu)便等(deng)問(wen)題，而且標志著我國(guo)矩(ju)形頂掘機施(shi)工(gong)工(gong)法已達到(dao)世(shi)界**水平，為今(jin)后海(hai)綿城(cheng)市、地下綜合(he)管廊(lang)以及(ji)城(cheng)市軌道交通地下出入口等(deng)工(gong)程建設(she)積累了經驗(yan)，對今(jin)后國(guo)內外城(cheng)市同類工(gong)程建設(she)具有很(hen)強的借鑒(jian)意義。