【正文】 .........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 ....................................................................................................................................................... 56 土料 .................................................................................................................57 砂礫料 .............................................................................................................58 石料 .................................................................................................................62 結(jié)語(yǔ) ......................................................................................................................................................................... 64 4 工程任務(wù)與規(guī)模 ............................................................................................................................................................ 64 工程現(xiàn)狀及存在的問(wèn)題 ...................................................................................................................................... 66 工程現(xiàn)狀 ...................