【正文】 .....................................................................................58 大壩監(jiān)測精度分析 ........................................................................................58 監(jiān)測儀器的可靠性 ........................................................................58 儀器可靠性檢查 ............................................................................62 監(jiān)測儀器精度分析 ........................................................................................64 壩基儀器 .......................................................................................64 電纜影響 .......................................................................................66 溫度計監(jiān)測不確定度 ....................................................................................66 溫度計監(jiān)測不確定度分析 .............................................................665 大壩外部變形監(jiān)測施工質(zhì)量控制 .................................................69 專一級變形監(jiān)測控制網(wǎng)實(shí)施 ........................................................................69 監(jiān)測網(wǎng)的目的和意義 .....................................................................69 監(jiān)測網(wǎng)實(shí)施技術(shù)保障 .....................................................................69 變形監(jiān)測網(wǎng)的布置 ........................................................................70 監(jiān)測網(wǎng)的精度要求 ........................................................................71 平面位移監(jiān)測網(wǎng)圖形選擇與實(shí)施 ...................................................71 垂直位移監(jiān)測網(wǎng)圖形選擇與實(shí)施技術(shù)要求 ....................................75 分步實(shí)施及與施工測量控制網(wǎng)的銜接 ...........................................77 數(shù)據(jù)檢驗(yàn)及平差計算 .....................................................................78 變形分析 .......................................................................................79 資料整理 .......................................................................................80 庫盤變形監(jiān)測 ................................................................................................80 監(jiān)測目的和范圍 ............................................................................80 執(zhí)行規(guī)范 .......................................................................................80 精度要求 .......................................................................................80 實(shí)施方案的技術(shù)要求 .....................................................................81 壩區(qū)水庫淤積監(jiān)測方案 ................................................................................82 測量范圍 .......................................................................................82 測量斷面布置及工程量 .................................................................82 坐標(biāo)高程系統(tǒng) ...............................................................................83 執(zhí)行規(guī)范和參考文件 .....................................................................83 作業(yè)方式 .......................................................................................83 測量方案實(shí)施 ...............................................................................83 剖面及地形資料處理 .....................................................................84 資料整理 .......................................................................................85 大壩表面變形監(jiān)測 ........................................................................................85 執(zhí)行規(guī)范 .......................................................................................85 壩體表面變形監(jiān)測點(diǎn)布置 .............................................................85 壩后橋監(jiān)測點(diǎn)觀測方案 .................................................................86 壩后橋監(jiān)測點(diǎn)觀測技術(shù)要求 ..........................................................86 壩體水準(zhǔn)點(diǎn)觀測方案及技術(shù)要求 ...................................................86 數(shù)據(jù)處理及變形分析 .....................................................................87 監(jiān)測資料建庫與整理 .....................................................................88 大壩表面變形監(jiān)測精度與控制 ....................................................................88 誤差產(chǎn)生原因分析 ........................................................................88 觀測誤差控制 ...............................................................................88 監(jiān)測點(diǎn)精度分析 ............................................................................896 大壩監(jiān)測工程實(shí)施情況 .................................................................90 各部位已實(shí)施監(jiān)測儀器布置及統(tǒng)計 ............................................................90 壩基 ..............................................................................................90 誘導(dǎo)縫監(jiān)測儀器布置 .....................................................................91 壩體橫縫監(jiān)測儀器布置 .................................................................91 壩體應(yīng)力應(yīng)變及溫度監(jiān)測布置 ......................................................91 繞壩滲流布置 ...............................................................................91 壩址錨索布置 ...............................................................................91 壩體及抗力體變形監(jiān)測布置 ..........................................................91 水墊塘、二道壩監(jiān)測布置 .............................................................91 外部變形監(jiān)測布置 ........................................................................91 4山梁測斜監(jiān)測布置 ....................................................................92 環(huán)境量監(jiān)測布置 ............................................................................92 1100 M高程以下已完成工程量匯總 ............................................................93 監(jiān)測工程實(shí)施質(zhì)量 ........................................................................................95 正倒垂鉆孔施工質(zhì)量 .....................................................................95 單元工程質(zhì)量驗(yàn)收 ........................................................................95 儀器運(yùn)行狀況及完好率統(tǒng)計 ..........................................................95 下閘蓄水前剩余工程量及實(shí)施計劃 ............................................................95大壩監(jiān)測設(shè)施施工自檢及監(jiān)測成果分析報告“昆科瑞”大壩安全監(jiān)測項目部 1前言小灣水電站位于云南省南澗縣與鳳慶縣交界的瀾滄江中游河段，在干流河段與支流黑惠江交匯處下游 處，系瀾滄江中下游河段規(guī)劃八個梯級中的第二級。小灣水電站工程屬大（1）型一等工程，永久性主要水工建筑物為一級建筑物。工程以發(fā)電為主兼有防洪、灌溉、養(yǎng)殖和旅游等綜合利用效益，水庫具有不完全多年調(diào)節(jié)能力，系瀾滄江中下游河段的“龍頭水庫”。小灣水電站樞紐工程由混凝土雙曲拱壩、壩后水墊塘及二道壩、左岸泄洪