文(wen)章來源(yuan)：中國鐵路工程總公司 發(fa)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。
上海(hai)(hai)青草(cao)(cao)沙水(shui)源地原水(shui)工(gong)(gong)程嚴(yan)橋支(zhi)(zhi)線(xian)(xian)工(gong)(gong)程是上海(hai)(hai)“十一(yi)(yi)五”重(zhong)點建設項目，是上海(hai)(hai)世(shi)博會(hui)的重(zhong)要(yao)配(pei)套工(gong)(gong)程之一(yi)(yi)，工(gong)(gong)程位(wei)于上海(hai)(hai)市浦(pu)東新(xin)區。嚴(yan)橋支(zhi)(zhi)線(xian)(xian)作為(wei)工(gong)(gong)程陸域(yu)輸水(shui)管線(xian)(xian)中的重(zhong)要(yao)支(zhi)(zhi)線(xian)(xian)，其供水(shui)規模為(wei)440萬m3/日，管線(xian)(xian)全線(xian)(xian)采(cai)用(yong)頂(ding)管施工(gong)(gong)。由市政分公司承建的上海(hai)(hai)青草(cao)(cao)沙水(shui)源地嚴(yan)橋支(zhi)(zhi)線(xian)(xian)C6標，具有頂(ding)管直徑大、單段頂(ding)進距(ju)(ju)離長、近距(ju)(ju)離雙(shuang)排同(tong)時頂(ding)進的特點，在國內(nei)尚屬首(shou)次。其鋼(gang)管直徑DN3600，管線(xian)(xian)長度2119m×2，工(gong)(gong)程全線(xian)(xian)分兩段，由一(yi)(yi)座(zuo)工(gong)(gong)作井和兩座(zuo)接(jie)收井組成，其中J26-J25段頂(ding)距(ju)(ju)為(wei)1119米，J26-J27段頂(ding)距(ju)(ju)為(wei)1004米。