文章來源：中國(guo)鐵路工程總公司(si) 發布時間(jian)：2011-02-03
近日，中國鐵路工程總公司所屬中鐵四局承建的國內自來水行業首個全線采用3.6米超大管徑、超千米長距離頂進的上海青草沙原水工程嚴橋支線C6標工程全線順利貫通，為上海市整個原水工程的如期完成開創了先決條件。
上海(hai)青(qing)(qing)草沙(sha)水(shui)源(yuan)(yuan)地原水(shui)工(gong)程(cheng)(cheng)(cheng)(cheng)嚴橋支(zhi)線(xian)(xian)(xian)工(gong)程(cheng)(cheng)(cheng)(cheng)是(shi)上海(hai)“十一(yi)五”重(zhong)點(dian)建設項目，是(shi)上海(hai)世博會的(de)重(zhong)要配套工(gong)程(cheng)(cheng)(cheng)(cheng)之一(yi)，工(gong)程(cheng)(cheng)(cheng)(cheng)位于上海(hai)市浦東新(xin)區。嚴橋支(zhi)線(xian)(xian)(xian)作(zuo)為工(gong)程(cheng)(cheng)(cheng)(cheng)陸(lu)域輸水(shui)管線(xian)(xian)(xian)中(zhong)的(de)重(zhong)要支(zhi)線(xian)(xian)(xian)，其供水(shui)規模(mo)為440萬(wan)m3/日(ri)，管線(xian)(xian)(xian)全線(xian)(xian)(xian)采用頂管施工(gong)。由市政分公司承建的(de)上海(hai)青(qing)(qing)草沙(sha)水(shui)源(yuan)(yuan)地嚴橋支(zhi)線(xian)(xian)(xian)C6標(biao)，具有頂管直徑大、單段頂進(jin)距(ju)離長、近距(ju)離雙排(pai)同時(shi)頂進(jin)的(de)特點(dian)，在國內尚(shang)屬首次。其鋼管直徑DN3600，管線(xian)(xian)(xian)長度2119m×2，工(gong)程(cheng)(cheng)(cheng)(cheng)全線(xian)(xian)(xian)分兩(liang)段，由一(yi)座工(gong)作(zuo)井(jing)和兩(liang)座接(jie)收井(jing)組(zu)成(cheng)，其中(zhong)J26-J25段頂距(ju)為1119米(mi)(mi)，J26-J27段頂距(ju)為1004米(mi)(mi)。