憑祥市那標(biāo)水庫(kù)除險(xiǎn)加固工程灌漿施工技術(shù)設(shè)計(jì)方案(存儲(chǔ)版)
【正文】 把質(zhì)量檢查驗(yàn)收關(guān)。旋噴墻最厚，定噴最薄。高壓噴射灌漿施工參數(shù)很多，主要的參數(shù)有漿密度、水壓力、提升速度、轉(zhuǎn)速或擺速、擺角。結(jié)合現(xiàn)場(chǎng)施工中情況解讀規(guī)范中高噴注漿部分噴射前應(yīng)進(jìn)行的準(zhǔn)備工作。高噴灌漿操作工藝是影響固結(jié)體防滲墻的主要因素之一，施工中要注意幾個(gè)操作要點(diǎn)：（1）噴射灌漿前要檢查高壓設(shè)備和管路系統(tǒng)。高速攪拌機(jī)：水泥漿制作 確保噴嘴方向準(zhǔn)確，是確保高噴墻體的搭接質(zhì)量，一般要求在地面上連接的校正。（1）制作過(guò)程一般由水泥聯(lián)合制機(jī)拌制。高壓噴射流的能量和切割能力（破壞力）與高壓水的流量、噴嘴出口面積、噴嘴入口壓力、水（漿）的密度等有關(guān)。漿液凝固后，便在土中形成一個(gè)固結(jié)體。漿液輸出及使用前過(guò)篩，自制備至用完不大于4h，不使用已以結(jié)塊的水泥。加強(qiáng)對(duì)質(zhì)量的事前、事中控制，以及對(duì)工作質(zhì)量、工序質(zhì)量和中間產(chǎn)品質(zhì)量的檢查。壓水試驗(yàn)在裂隙沖洗后或結(jié)合裂隙沖洗進(jìn)行,壓力為灌漿壓力的80%,壓水20min，每5min測(cè)讀一次壓水流量，取最后的流量值作為計(jì)算流量，其成果以透水率表示。（2）當(dāng)噴頭下至設(shè)計(jì)深度，先按規(guī)定參數(shù)進(jìn)行原位噴射，待漿液返出孔口情況正常后方開(kāi)始提升噴射。（4）鉆進(jìn)中經(jīng)常檢查主動(dòng)鉆桿、鉆桿的方向有無(wú)變化，發(fā)現(xiàn)問(wèn)題及時(shí)糾正。鉆孔的孔位、孔深、孔徑、孔序和孔斜等按施工圖紙要求執(zhí)行。（6）灌漿灌漿膠塞由河北橡膠廠生產(chǎn)，該廠生產(chǎn)的膠塞具有良好的膨脹性和耐壓性能，在最大灌漿壓力下能可靠地封閉灌漿孔段，并易于安裝和拆除。（2）采用專用高速機(jī)械制漿機(jī)制漿，攪拌均勻并測(cè)定液體密度，水泥漿拌時(shí)間不少于30s，漿液自制好至用完時(shí)間小于4h。4 施工措施 由于現(xiàn)場(chǎng)施工場(chǎng)地比較小，在總體施工布置上，施工人員住宿、生活和灌漿材料、制漿站均布置在壩體右肩。2 庫(kù)區(qū)地質(zhì)情況主壩壩基由石灰?guī)r和頁(yè)巖組成，巖石多呈中化風(fēng)狀，裂隙較發(fā)育，多以壓扭性為主，裂隙間連通性較好，但仍出現(xiàn)壩基滲漏現(xiàn)象。主壩壩基由石灰?guī)r和頁(yè)巖組成，巖石多呈中化風(fēng)狀，裂隙較發(fā)育，多以壓扭性為主，裂隙間連通性較好，但仍出現(xiàn)壩基滲漏現(xiàn)象。關(guān)鍵詞：?。?）型水庫(kù)；二級(jí)支流；灌漿設(shè)計(jì)；左江High pressure jet grouting in Pingxiang city the standard reservoir reinforcement engineeringStudent:WEI Fazhan Teacher:Abstract: The Nabiao reservoir is the second tributary of Zuojiang river, which located in West of Nabiao village, Xiashi munity, Xiashi Town,City of Pingxiang. It is 4km from the seat of town government and 15Km from the city center! It is a small multipurpose reservoir with the main objective of irrigation as well as food control and farming. The rainwater collection area of 15 square kilometers,the largest storage capacity of million cubic meters and the designing irrigation area of 1, 700 mu.Main dam foundation posed of limestone and shale,the rock shaped as weathering,has a lot of of fracture，mainly in pressive tectonic regime, the fussured connection is good, but the seepage on dam foundation still happened. In consideration of the above situation, the departments concerned decided to make high pressure jet grouting and curtain grouting to the dam body and dam foundation respectively. The design of Grouting will be made by Guangxi Technical College of water Resources and Electric Engineering. Our pany won the bid and will responsible for the construction.Key words: Small ( 1) reservoir。灌漿設(shè)計(jì)由廣西水利電力技術(shù)職業(yè)學(xué)院承擔(dān)，我單位中標(biāo)并負(fù)責(zé)施
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