憑祥市那標(biāo)水庫除險(xiǎn)加固工程灌漿施工技術(shù)設(shè)計(jì)方案-wenkub
2023-05-10 00:40:40 本頁面
【正文】 鉆進(jìn)，在強(qiáng)風(fēng)化巖及壩體中用合金鉆頭鉆進(jìn)；布孔完成并驗(yàn)收合格后，可進(jìn)行鉆機(jī)安裝就位準(zhǔn)備工作，鉆機(jī)安裝時(shí)主動(dòng)鉆桿調(diào)節(jié)垂直，開孔鉆頭對(duì)準(zhǔn)，孔位偏斜不大于10cm，鉆機(jī)裝安用水平尺校正水平度，有斜度時(shí)用方木墊平，保正垂直開孔鉆進(jìn)。使用的設(shè)備主要包括高噴臺(tái)車、高壓水（漿）泵、成孔鉆機(jī)、泥漿泵、空壓機(jī)、泥漿攪拌機(jī)、噴射管、高壓管等。（5）施工現(xiàn)場(chǎng)設(shè)立配件臨時(shí)倉庫，準(zhǔn)備足夠的壓力表、壓力軟管、供水管，注漿管和必要的閥門等設(shè)備，并有一定備量。帷幕灌漿用的灌漿泵選用北京地質(zhì)機(jī)械廠生產(chǎn)的150型泥漿泵，具有操作方便，壓力穩(wěn)定，很少出故障等優(yōu)點(diǎn)；高壓噴射灌漿選用天津生產(chǎn)的高壓泵，其最大工作壓力達(dá) 45MPa。水泥漿的配制：根據(jù)水灰比，在攪拌桶內(nèi)加入定量的水，然后按水灰比加入相當(dāng)重量的水泥，攪拌均勻即可。（1）水泥：選用當(dāng)?shù)厣a(chǎn)的425普通硅酸鹽水泥。（4）《水工建筑物水泥灌漿施工技術(shù)規(guī)范》SL62—94。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)施工。水庫壩址以上集雨面積15km2，總庫容330萬m3，設(shè)計(jì)灌溉1700畝。關(guān)鍵詞：?。?）型水庫；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。水庫壩址以上集雨面積15km2，總庫容330萬m3，設(shè)計(jì)灌溉1700畝。主壩壩基由石灰?guī)r和頁巖組成，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。 The second tributary。2 庫區(qū)地質(zhì)情況主壩壩基由石灰?guī)r和頁巖組成，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。3 施工依據(jù)施工依據(jù)如下：（1）設(shè)計(jì)灌漿圖。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）水泥細(xì)度通過80um方孔篩的余量不大于5%。（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。 （2）灌漿管使用32的鋼絲膠管，其承受壓力可達(dá)80MPa以上。（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
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