1、污水提升泵站壓密注漿施工方案一、前言 Preface污水提升泵站壓密注漿主要針對其基坑底板下部的約1.8m 厚的粉土，因其底板呈階梯部， 部份土體滑動，造成部份底板與其下部粉土的分離，而形成空洞，目前通過現(xiàn)場勘察，因破壞處為 1631.8m。因而要求采用注漿方式進行土體加固。This plan is mainly aimed at about 1.8mTHK powder soil in the bottom slab of foundation pit. As the bottom slab is in a step and part of the soil is slided, some

2、slabs are separated from the powder soil. So the hollows turn up. After the site investigation, as the broken area is 16*3*1.8m, method of grouting should be adopted for the soil strengthening.二、壓密注漿方法Methodology for Compaction and Grouting該工程基坑底板現(xiàn)已澆注成功， 依據現(xiàn)場的破壞程度及以往的施工經驗，先通過人工方式在底板開孔，然后依據水灰比0.50.6

3、的方案進行攪拌水泥漿，再將攪拌均勻的水泥漿用機械方式輸入孔洞中，已達到加固地基土為目的。 The bottom slab in foundation pit has been successfully placed. According to the damage degree and our construction experience, firstly we will make hole by manpower, secondly mix cement mortar in a water cement ratio of 0.50.6. Then cement mortar will be

4、 conveyed into holes by machine to meet the requirement.三、施工淮備 Construction Preparation1、設置制漿站、加漿站盡量減少移動次數(shù)。Establish the mortarprocess station and adding station to minimize the times of removal.2、 設備調試，檢查設備運行的情況。 Equipment commissioning. And check the running status for equipments.3、備料、搭建水泥存放點。 Mat

5、erial preparation. And build thestorage for cement.四、施工計劃 Construction Plan1、施工設備：水泥漿壓力泵一臺； 泥漿攪拌桶一臺； 儲漿桶一只；注漿桿一根；注漿管 50m。 Construction Equipments: One cement mortar pressure pump. One bucket for cement mortar mixing. One bucket for storage. One pole for mortar filling and 50m conduit.2、人員組織：施工現(xiàn)場在施工項

6、目經理部的領導下，另配壓密注漿現(xiàn)場施工負責人 1 人，熟練壓密注漿工 6 人。Staff Organization: All site staff shall be guided by P.M., with one site construction supervisor and 6 competent and experienced workers for compaction and grouting.五、施工技術要求Construction Technical Requirements1、技術要求： Technical Requirements因施工地塊現(xiàn)已澆注混凝土底板，固采用風鎬進行

7、人工開孔，孔距為 2.0m1.5m，呈梅花形布孔，這樣有利于漿液充填。 As the site has been placed with concrete, holes will be made by manpower with air pick. These holes will be in a plum blossom shape, with clearance of 2.0m1.5m to facilitate the full filling.壓漿設備采用 200 型高壓泵注漿，機械動力采用自備柴油機動力，此泵最大壓力可達到8MPa。200 type HP pump and self

8、owned dieselgenerator will be used. The maximum pressure of pump is 8MPa.注漿時應采取跳越注漿， 這樣可使?jié){液充填密實。 It will be groutedin skip to meet the density requirement.2、工藝流程： Workmanship Flow Chart人工依尺寸成孔攪拌水泥漿液小壓力注漿待初凝后再度注漿封孔。 Manual Holes Making As SizedCement Mortar MixingGrouting withLPSecondGrouting (After

9、it is generally consolidated. )Seal Holes3、注漿技術要求： Technical Requirements for Grouting1)水泥漿液配制水灰比0.50.6；初次注漿時壓力控制在0.20.3 之間；待 12 小時后，再次注漿，二次注漿壓力不得超過0.5MPa。以防止壓力過大，造成基坑底板的破壞，注漿時可依據現(xiàn)場施工情況下調整注漿壓力。 The water cement ratio is 0.50.6. In theinitial grouting, the pressure should be controlled within0.20.3.

10、Itwill be secondly grouted after 12h. The second time pressure cannotexceed 0.5MPa to avoid the damage for bottom slab. The pressure can be adjusted according to the actual condition.漿液配制采用 425#普通硅酸鹽水泥， 水灰比 0.50.6，注漿量以漿滿出底板為止。 425# Portland cement will be used for mixing, with the water cement ratio

11、 of 0.50.6. The area must be filled till the mortar exceeds the bottom slab.3) 注漿管采用高壓注漿管，接頭處應保證可承受1.0MPa 的壓力。HP grouting conduit shall be used. Pressure in the end should bear1.0MPa.4) 二次注漿后，應及時進行有效封孔，并且在泥漿攪拌時應進行充分攪拌，攪拌時間不小于五分鐘。 After the second grouting, holes should be blocked in a timely manner.

12、 And cement mortar must be completely mixed, no less than 5 minutes.5) 注漿過程中應時刻觀察現(xiàn)場情況，以便控制注漿量與注漿壓力，以免對基礎底板造成不必要的破壞。 In the period of grouting, take care of the site condition for the quantity and pressure control.六、質量保證措施Quality Assurance Measures1、建立以項目負責為主的質量管理體系，嚴格落實各工序質量責作任制。 Establish the quali

13、ty management system and carry out theresponsibility system for each procedure.2、認真觀察現(xiàn)場施工情況，并做好現(xiàn)場施工記錄。Carefullyinvestigate the construction condition and make records.3、堅決執(zhí)行質量否決權制度， 不合格的分項工作堅決返工，加強分項工序的檢查。Strictly insist on the quality veto system. Theunacceptable work must be properly done again. S

14、trengthen the checkfor sub-items.4、工程全部結束后，提交施工資料。Construction documents willbe submitted on completion.七、安全措施 Safety Measures1、 以項目負責人為首，各施工人員堅決執(zhí)行現(xiàn)場施工管理人的管理，遵守廠規(guī)及各項制度。Headed by Project Responsible, all site staffwill be stick to the company regulation and all safety systems.2、 各工序、工種嚴格按相應的安全規(guī)定作業(yè)，嚴禁

15、“三違施工”。Allcrafts and procedures should strictlyfollowsafety rules. “ThreeDisobeyed Constructions”are forbidden.-編制施工組 bai 織設計方案主要注du 意以下幾點（1）工程概況及特點分析分析和概 zhi 要說明本 dao 工程性質、規(guī)模、建設地點、承建方式、建筑與結構特點、分期分批交付使用的期限，建設單位的要求和可提供的條件；本地區(qū)氣候、地形、地質、水文和交通運輸情況；施工力量、施工條件、資源供應情況等。并找出本工程的主要施工特點（難點）。2）施工方案選擇依據工程概況及特點分析，結合可供投入的各項資源情況，全面部署施工任務，確定施工總順序和流向；選擇主要工種工程的施工方法和施工機械；確定各部分項工程的施工順序；并對擬建工程可供選用的幾種施工方案進行定性、定量的分析，以選出最佳施工方案。3）編制施工進度計劃施工進度計劃是施工方案在時間上的體現(xiàn)和安排。編制施工進度計劃應采用先進的計劃理論和方法（如流水施工、橫道圖、垂直圖、網絡圖等）合理確定施工順序和各工序的作業(yè)時間，使工期、成本和資源的利用達到