【正文】 ... 1 水文 ............................................................................................. 2 工程建設(shè)內(nèi)容 ............................................................................. 3 工程規(guī)劃 ..................................................................................... 4 工 程管理設(shè)計(jì) .............................................................................. 4 施工組織設(shè)計(jì) .............................................................................. 5 環(huán)境影響分析 .............................................................................. 6 工程投資估算 .............................................................................. 6 經(jīng)濟(jì)評(píng)價(jià) ..................................................................................... 7 結(jié)論 ........................................................................................... 8 2．水文 .................................................................................................. 8 流域概況 ..................................................................................... 8 氣象 ............................................................................................. 9 設(shè)計(jì)洪峰流量的計(jì)算 ................................................................ 10 成果合理性分析 ....................................................................... 16 工程地質(zhì) ........................................................................................ 17 地形地貌 ................................................................................... 17 地層巖性 ................................................................................... 17 水文地質(zhì) ................................................................................... 18 區(qū)域地質(zhì)構(gòu)造 ............................................................................ 18 2 天然建筑材料 ............................................................................ 18 工程 任務(wù)和規(guī)模 ........................................................................... 19 社會(huì)經(jīng)濟(jì)概況和工程建設(shè)的必要性 ......................................... 19 河道整治指導(dǎo)思想和規(guī)劃原則 ................................................ 20 河道治理的目標(biāo) ........................................................................ 20 5 工程設(shè)計(jì) ........................................................................................... 21 設(shè)計(jì)依據(jù) ................................................................................... 21 工程規(guī)劃 ................................................................................... 22 河道整治規(guī)劃設(shè)計(jì) .................................................................... 22 河堤工程設(shè)計(jì) ............................................................................ 24 清淤疏浚工程設(shè)計(jì) .................................................................... 32 堤頂防洪道路設(shè)計(jì) .................................................................... 33 安全防護(hù)欄設(shè)計(jì) ...................................................................... 33 ........................................................................................... 37 交通與通訊設(shè)施 ........................................................................ 38 防汛搶險(xiǎn)設(shè)施 ............................................................................ 38 7．施工組織設(shè)計(jì) ............................................................................... 38 施工條件 ................................................................................... 38 建筑材料 ................................................................................... 38 施工導(dǎo)流 ................................................................................... 39 主體工程施工 ............................................................................ 39 施工交通運(yùn)輸 ............................................................................ 41 3 施工總體布置 ............................................................................ 41 施工進(jìn)度計(jì)劃 ............................................................................ 42 環(huán)境影響評(píng)價(jià) ............................................................................... 42 環(huán)境影響評(píng)價(jià)的目的與依據(jù) .................................................... 42 環(huán)境影響分析 ............................................................................ 43 環(huán)境保護(hù)措施 ............................................................................ 44 結(jié)論 ........................................................................................... 46 投資估算及資金籌措 ................................................................... 46 編制說(shuō)明 ................................................................................. 46 投資估算結(jié)果 .......................................................................... 49 資金籌措 ................................................................................. 49 10．工程經(jīng)濟(jì)評(píng)價(jià) ............................................................................. 50 概述 ......................................................................................... 50 評(píng)價(jià)依據(jù) ................................................................................. 50 國(guó)民經(jīng)濟(jì)評(píng)價(jià) .......................................................................... 50 國(guó)民經(jīng)濟(jì)評(píng)價(jià)指標(biāo) .................................................................. 52 1結(jié)論與建議 .................................................................................. 56 綜合評(píng)價(jià) .................................................................................. 56 結(jié)論 ......................................................................................... 57 建議 ......................................................................................... 58 附： **縣北川河（ XX 段 ）河道治理工程平面布置圖 **縣北川河（ XX 段 ）河道治理工程橫斷面圖 4 **縣北川河（ XX 段 ）河道治理工程縱斷圖 **縣北川河（ XX 段 ）河道治理工程防洪堤標(biāo)準(zhǔn)斷面圖。 1 綜合說(shuō)明 項(xiàng)目區(qū)概況 **縣位于山西省西部， XX 山中段西翼，地理位置介于東經(jīng)111o239。30″ ,北緯 37o3639。27″之間。 地貌東北部屬土石山區(qū)，西南部為黃土丘陵溝壑區(qū)。天然草灌叢生，植被覆蓋完好，共有天然林 萬(wàn)畝，其中喬木林 萬(wàn)畝 ,灌木林 萬(wàn)畝，天然草地 萬(wàn)畝，林草覆蓋率為 %。該區(qū)梁峁眾多，谷深坡陡，溝坡植被很少，土壤貧瘠，