文章來源：中國(guo)鐵路工程總公司(si) 發布時間：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(shang)海青草(cao)沙(sha)水(shui)(shui)源地原水(shui)(shui)工(gong)(gong)程嚴橋支(zhi)(zhi)線工(gong)(gong)程是上(shang)海“十一(yi)五”重(zhong)點建設項目，是上(shang)海世博會的(de)(de)重(zhong)要(yao)配套工(gong)(gong)程之(zhi)一(yi)，工(gong)(gong)程位于上(shang)海市浦東新區。嚴橋支(zhi)(zhi)線作為(wei)(wei)工(gong)(gong)程陸域輸水(shui)(shui)管(guan)(guan)(guan)(guan)線中的(de)(de)重(zhong)要(yao)支(zhi)(zhi)線，其供水(shui)(shui)規模(mo)為(wei)(wei)440萬m3/日，管(guan)(guan)(guan)(guan)線全線采用頂(ding)管(guan)(guan)(guan)(guan)施工(gong)(gong)。由市政分公司(si)承(cheng)建的(de)(de)上(shang)海青草(cao)沙(sha)水(shui)(shui)源地嚴橋支(zhi)(zhi)線C6標，具有頂(ding)管(guan)(guan)(guan)(guan)直徑大、單段頂(ding)進距離長、近距離雙排同時頂(ding)進的(de)(de)特(te)點，在國內尚屬首次。其鋼管(guan)(guan)(guan)(guan)直徑DN3600，管(guan)(guan)(guan)(guan)線長度2119m×2，工(gong)(gong)程全線分兩段，由一(yi)座工(gong)(gong)作井和兩座接(jie)收井組成，其中J26-J25段頂(ding)距為(wei)(wei)1119米，J26-J27段頂(ding)距為(wei)(wei)1004米。