【正文】 ..............................................................................................24 第 五節(jié) PCCP管道施工 ................................................................................................24 管材質(zhì)量要求 ................................................................................................25 管施工方法 ...................................................................................................26 第六節(jié) 鋼管施工 ..........................................................................................................29 鋼材質(zhì)量要求 ........................................................................................................29 鋼管施工方法 ........................................................................................................29 施工主要質(zhì)量標(biāo)準(zhǔn)和技術(shù)要求 ...............................................................................30 鋼管安裝 ...............................................................................................................32 管道防腐要求 ........................................................................................................32 溝槽覆土 ...............................................................................................................33 第七節(jié) 倒虹管施工 ......................................................................................................33 工程概述 ..............................................................................................................33 施工工藝 ...............................................................................................................33 施工總則 ..............................................................................................................33 施工要點 ..............................................................................................................34 第八節(jié) 頂管工程 ..........................................................................................................34 工程概述 ..............................................................................................................34 沉井工程概況 ........................................................................................................35 沉井施工 ...............................................................................................................35 洞口壓密注漿施工 ................................................................................................40 頂管施工 ..............................................................................................................40 第九節(jié) 管橋施工 ..........................................................................................................46 工程概述 ..............................................................................................................46 施工流程 ..............................................................................................................46 灌注樁施工 ...........................................................................................................46 支墩施工 ...............................................................................................................48 3 鋼管的拼裝與架設(shè) .................................................................................................49 第十節(jié) 排水閥井、流量儀井、透氣閥井等附屬工程 .....................................................50 排水閥井、流量儀井等附屬工程施工 ...................................................................50 第十一節(jié) 管道試驗及消毒 ............................................................................................51 性能試驗 .............................................................................................................51 管道清洗消毒 .......................................................................................................53 第四章 針對本工程特點的技術(shù)措施 .................................................................................54 第一節(jié) 高壓線段下管道鋪設(shè)措施 .................................................................................54 施工準(zhǔn)備 ..............................................................................................................54 主要技術(shù)措施 .......................................................................................................54 第二節(jié) 地下管線及構(gòu)筑物保護措施 ..............................................................................54 工程概述 ..............................................................................................................54 監(jiān)測方案 ..............................................................................................................54 地下管線及 臨近構(gòu)筑物保護措施 ...........................................................................57 預(yù)計可能發(fā)生情況的對策 ......................................................................................58 第三節(jié) 確保周邊道路及河道暢通措施 ..........................................................................59 工程概述 ..............................................................................................................59 確保市政道路暢通及鐵路線安全的措施 .................................................................59 確保鄉(xiāng)間道路的暢通 .............................................................................................60 確保河道暢通措施 ................................................................................................60 第四節(jié) 針對可能出現(xiàn)流沙的防治措施 ..........................................................................60 工程概述 ...............................................................................................................60 流沙防治措施 .......................................................................................................60 應(yīng)急措施 ..............................................................................................................61 第五章 特殊季節(jié)施工技術(shù)措施 .......................................................................................62 第一節(jié) 雨季、臺風(fēng)汛期施工措施 ................