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各種施工方式措施寶藏(專業(yè)版)

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【正文】 100 八、水下砼灌注 水下砼采用直升導管法灌注,導管內(nèi)孔直徑φ 23cm,導管長度根據(jù)孔深和工藝要求配制, 導管使用前應認真檢查其完好情況,必要時做壓水試驗。確??椎子俜e控制在要求以內(nèi)。 四、泥 漿 根據(jù)地質資料情況分析,本工程可采用原土造漿固壁。 鉆孔灌注樁施工技術措施 一、開工前應具備以下資料: ( 1)、工程地質勘探成果報告; ( 2)、樁基工程的設計圖紙、技術要求; ( 3)、設計部門技術交底會議紀要; ( 4)、建設單位提供的測量基線、水準點、座標資料; ( 5)、經(jīng)建設單位簽署的開工報告; ( 6)、樁基工程施工技術措施、施工進度計劃; ( 7)、混凝土級配試驗報告; ( 8)、質量、安全保證措施。 20 鋼筋籠直徑: 允許偏差177。 砼灌注采用商品砼車載至孔口直接灌注,灌注工藝的關鍵是要保證樁身砼的密實性良好,要求砼不僅要達到設計要求的強度,而且要有良好的和易性和流動性,灌注過程不允許有間斷,嚴格控制導管埋深和拆導管的長度,防止 孔內(nèi)泥漿混入樁身造成膠結不良,蜂窩、甚至斷樁。 ............................................................................................1 ...............................................................................................1 ...........................................................................................1 搗 ...............................................................................................1 ...............................................................................................1 ...............................................................................................2 ...................................................................2 ...........................................................5 ......................................................................................................6 第 5 章 排水工程 ............................................................................ 1 第 6 章 土石方開挖及隧洞施工方案 ............................................. 1 概況 .........................................................................................................1 二道壩及進水口土石方開挖 .................................................................1 隧洞洞挖 .................................................................................................2 總體施工工藝 ..............................................................................2 ...............................................................................2 第 7 章 混凝土工程施工 ................................................................ 4 ..........................................................................................4 .......................................................................................4 模板工程 ......................................................................................4 鋼筋 工程 ......................................................................................5 砼的澆筑 ......................................................................................6 壩體溫控措施 ..............................................................................8 其它混凝土工程 ...................................................................................9 進水口砼 ......................................................................................10 引水隧洞抹底砼和襯砌砼 ..........................................................10 噴砼施工 ......................................................................................10 導流隧洞封堵砼 ..........................................................................11 第 8 章 灌漿工程 .......................................................................... 1 鉆孔 .........................................................................................................1 灌漿孔的鉆孔 ..............................................................................1 檢查孔和排水孔的鉆孔 ..............................................................2 鉆孔沖洗和壓水試驗 .............................................................................2 ...............................................................................................2 壓水試驗 ......................................................................................3 制漿 .........................................................................................................3 ..................................................................................................3 一般要求 ......................................................................................4 灌漿方法 ......................................................................................4 灌漿孔的封孔 ..............................................................................5 地下洞室灌漿 .........................................................................................5 一般要求 ......................................................................................5 回填灌漿 ......................................................................................5 固結灌漿 ......................................................................................6 混凝土拱壩封拱灌漿 .............................................................................7 .......................................................................................7 灌漿系統(tǒng)布置 ..............................................................................7 灌漿 ..............................................................................................8 第 9 章 拋填塊石 ............................................................................ 9 大方腳處拋填塊石 .................................................................................9 ..................................................................................................9 堤腳拋石施工方案 .................................................................................10 擋墻外拋填塊石 .....................................................................................11 拋石筑堤 .................................................................................................11 拋土袋護腳 .............................................................................................12 第 10章 施工質量目標及保證措施 ............................................... 1 ..................................................................................................1 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