【正文】 .......................................................................................... 6 2 施工導(dǎo)流設(shè)計(jì) ........................................................................................................................... 9 導(dǎo)流方式選擇和導(dǎo)流時(shí)段劃分 .......................................................................................... 9 導(dǎo)流方式選擇 ............................................................................................................... 9 導(dǎo)流時(shí)段的劃分 ......................................................................................................... 10 導(dǎo)流設(shè)計(jì)標(biāo)準(zhǔn)和導(dǎo)流設(shè)計(jì)流量 ........................................................................................ 10 導(dǎo)流 設(shè)計(jì)標(biāo)準(zhǔn) ............................................................................................................. 10 導(dǎo)流設(shè)計(jì)流量 ............................................................................................................. 12 導(dǎo)流方案的擬定 ................................................................................................................ 12 圍堰堰頂高程的確定 ........................................................................................................ 13 .................................................................................................. 14 二期圍堰高程的確定 .................................................................................................. 17 3 導(dǎo)流建筑物設(shè)計(jì) ....................................................................................................................... 19 導(dǎo)流底孔設(shè)計(jì) .................................................................................................................... 19 圍堰結(jié)構(gòu)設(shè)計(jì) .................................................................................................................... 19 一期圍堰結(jié)構(gòu)設(shè)計(jì) ..................................................................................................... 19 二期圍堰結(jié)構(gòu)設(shè)計(jì) ..................................................................................................... 20 4 截流設(shè)計(jì) ................................................................................................................................... 21 截流方案選擇 .................................................................................................................... 21 截流方案的比較 ......................................................................................................... 21 截流方式的選擇 ......................................................................................................... 21 龍口位置的選擇 ......................................................................................................... 22 截流日期和截流 設(shè)計(jì)流量 ................................................................................................ 22 截流水力計(jì)算 ..................................................................................................................... 23 流水力計(jì)算的原理 ...................................................................................................... 23 戧堤高程確定 .............................................................................................................. 24 立堵截流材料的確定 ................................................................................................. 25 5 基坑排水 ................................................................................................................................... 27 一期排水量的估算 ............................................................................................................. 27 初期排水 ...................................................................................................................... 27 經(jīng)常性排水 ................................................................................................................. 28 二期排水量的估算 ............................................................................................................. 31 ...................................................................................................................... 31 經(jīng)常性排水 ................................................................................................................. 31 排水設(shè)備的選擇 ................................................................................................................ 32 初期排 水設(shè)備的選擇 .................................................................................................. 32 經(jīng)常性排水設(shè)備的選擇 ............................................................................................. 32 6 圍堰施工 ................................................................................................................................... 34 一期圍堰的施工 ................................................................................................................. 34 圍堰工程量 ............................................................................................................... 34 圍堰填料的選擇 ......................................................................................................... 34 圍堰工期 ...................................................................................................................... 34 二期圍堰的施工 ................................................................................................................. 35 圍堰工程量 ............................................................................................................... 35 圍堰填料的選擇 ......................................................................................................... 35 圍堰穩(wěn)定分析 .................................................................................................................... 35 上游圍堰的基本設(shè)計(jì) .................................................................................................. 36 穩(wěn)定分析資料 ............................................................................................................. 36 滲流分析 .............