文章來源(yuan)：中國鐵路工程總公司(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(shang)(shang)海(hai)(hai)青(qing)草(cao)(cao)沙水源地原水工(gong)(gong)(gong)程(cheng)嚴(yan)(yan)橋(qiao)支線(xian)(xian)(xian)工(gong)(gong)(gong)程(cheng)是上(shang)(shang)海(hai)(hai)“十一五(wu)”重點(dian)建設項目(mu)，是上(shang)(shang)海(hai)(hai)世博會的(de)重要配套工(gong)(gong)(gong)程(cheng)之一，工(gong)(gong)(gong)程(cheng)位于(yu)上(shang)(shang)海(hai)(hai)市浦東新區。嚴(yan)(yan)橋(qiao)支線(xian)(xian)(xian)作為工(gong)(gong)(gong)程(cheng)陸域輸水管(guan)線(xian)(xian)(xian)中的(de)重要支線(xian)(xian)(xian)，其(qi)供水規模為440萬m3/日，管(guan)線(xian)(xian)(xian)全線(xian)(xian)(xian)采用頂管(guan)施工(gong)(gong)(gong)。由市政分(fen)公(gong)司承建的(de)上(shang)(shang)海(hai)(hai)青(qing)草(cao)(cao)沙水源地嚴(yan)(yan)橋(qiao)支線(xian)(xian)(xian)C6標，具有頂管(guan)直徑(jing)大、單段(duan)(duan)頂進距離長、近距離雙排同(tong)時頂進的(de)特點(dian)，在國內尚屬首(shou)次。其(qi)鋼(gang)管(guan)直徑(jing)DN3600，管(guan)線(xian)(xian)(xian)長度(du)2119m×2，工(gong)(gong)(gong)程(cheng)全線(xian)(xian)(xian)分(fen)兩段(duan)(duan)，由一座工(gong)(gong)(gong)作井(jing)和兩座接收井(jing)組成，其(qi)中J26-J25段(duan)(duan)頂距為1119米(mi)，J26-J27段(duan)(duan)頂距為1004米(mi)。