【正文】 ....................................................................................................................................................11 氣象、水文特征 .........................................................................................................................................11 流域特征值 ................................................................................................................................................. 12 年降雨量 ..................................................................................................................................................... 12 設(shè)計(jì)洪水 ..................................................................................................................................................... 13 計(jì)算依據(jù) ........................................................................................................ 13 設(shè)計(jì)暴雨計(jì)算 ................................................................................................ 13 洪水總量 ........................................................................................................ 20 洪峰流量 ........................................................................................................ 21 設(shè)計(jì)雨型及洪水過(guò)程線 ................................................................................ 24 洪水調(diào)節(jié)和防洪特征水位 ........................................................................................................................ 25 防洪標(biāo)準(zhǔn)的確定 ............................................................................................ 25 調(diào)洪演算的條件 ............................................................................................ 26 塔崗水庫(kù)水位、面積、庫(kù)容關(guān)系 ................................................................ 26 溢洪道水位流量關(guān)系 .................................................................................... 26 iii 塔崗 水庫(kù)調(diào)洪演算 ........................................................................................ 27 塔崗水庫(kù)調(diào)洪演算成果 ................................................................................ 28 河道泥沙 ..................................................................................................................................................... 38 施工期洪水導(dǎo)流計(jì)算 ................................................................................................................................ 38 3 工程地質(zhì) ............................................................................................................................................................... 41 區(qū)域工程地質(zhì)條件及評(píng)價(jià) ........................................................................................................................ 41 地形地貌 ........................................................................................................ 41 地層巖性 ........................................................................................................ 41 片麻巖（ Z） .................................................................................................. 41 上更新統(tǒng)（ alplQ3）： .................................................................................... 42 全新統(tǒng)（ alQ 4） ............................................................................................. 42 地質(zhì)構(gòu)造與地震 ............................................................................................ 42 地質(zhì)構(gòu)造 ......................................................................................................... 42 地震 ................................................................................................................. 43 水文地質(zhì)條件 ................................................................................................ 43 地下水類(lèi)型 ..................................................................................................... 44 各土層及卵石層的滲透性 ............................................................................. 44 水化學(xué)特征 ..................................................................................................... 44 河道工程地質(zhì)條件及評(píng)價(jià) ........................................................................................................................ 47 地質(zhì) 結(jié)構(gòu) ........................................................................................................ 47 右岸 ................................................................................................................. 47 河床 ................................................................................................................. 47 左岸 ................................................................................................................. 47 土體的物理力學(xué)性質(zhì) .................................................................................... 47 主要工程地質(zhì)問(wèn)題及評(píng)價(jià) ........................................................................................................................ 53 基坑臨時(shí)邊坡穩(wěn)定問(wèn)題 ................................................................................ 53 施工排水問(wèn)題 ................................................................................................ 53 黃土狀土的濕陷問(wèn)題 .................................................................................... 53 建筑物工程地質(zhì)條件及評(píng)價(jià) ................................................................................................................... 53 口頭排水溝渡槽 ............................................................................................ 53 江山橋 ............................................................................................................ 53 薛灣村橋 ........................................................................................................ 54 iv 秦窯村橋 ........................................................................................................ 55 三皇莊橋 ........................................................................................................ 56 天然建筑材料 ...................