午啪啪夜福利无码亚洲,亚洲欧美suv精品,欧洲尺码日本尺码专线美国,老狼影院成年女人大片

1、塞拉利昂水泥廠項目樁基施工方案Cement terminal project pile foundation construction program in Sierra Leone一、旋挖成孔灌注樁施工 Rotary drilling hole pile construction1工程量1000M3砼 The project amount 1000M3 concrete2施工技術 Construction Technology本工程項目樁基施工采用旋挖成孔工程鉆機，在施工前須對場地進行清表、清障、平整、壓實，使場地表面耐力不小于100Kpa.施工時設置泥漿池、沉定池、泥漿循環系統和廢漿池，沉2、淀池的容積兩倍于一根樁的體積，儲漿池容積大于16m3,以滿足鉆孔需要.Pile Foundation Construction of the project use a rotary drilling rig,before construction，we need to cleared the table , wrecker , leveling ， compaction venue to make sure the surface endurance is not less than 100Kpa。During construction， we need to set Mud pools ,3、 sedimentation tanks ， mud circulation system and waste slurry pond。To meet drilling demand， Sedimentation tank volume is twice the volume of a pile ， storage slurry pond volume should be greater than 16m33工藝流程 Process 4操作工藝 Operation process（1）測量定位 Measurement Positioning(a）采用全站儀按照圖紙測定位置并做好標色。Use t4、otal station measurement position in accordance with the drawings and make a standard color .（b）利用水準儀測定護筒標高其誤差不大于10MM。Level determination Casings for elevation of the error should not more than 10MM（2）栓樁：樁位位置確定后，用兩根相互垂直的十字線中心相交于樁點,并定出他的控制點，做好標識妥善保護。Bolt piles ：once piles bit position is determined,w5、e use two mutually perpendicular crosshairs center intersect at the pile point， set his control point and marked properly protected.（3）鉆機就位：履帶坐落的位置應平整，坡度不大于3度，避免因場地不平整產生動力損失，傾斜、位移,重心高時還會引起安全事故。Rig in place : Tracked located position should be flat ， the slope is not greater than 3 degrees and avoid 6、venue uneven loss of power , tilt , displacement ， high center of gravity will also cause accidents（4）對準樁位:首先調整旋挖機的桅桿，使之處于垂直狀態，讓鉆頭對準樁點。Alignment Pile ： First adjust the auger mast in a vertical state and the drill bucket should be align with the pile point .（5）埋設護筒:定出十字控制點后，可采用鉆機進行取土,鉆至設計深度進行護筒埋設。Bu7、ry casing：set cross control point the we use the rig dig the hole until the depth we can start to bury the casing.護筒采用厚度6mm的鋼板制作而成，長度在2m左右,護筒的直徑為850mm，為防止鉆進施工中護筒外圈返漿造成塌孔和護筒脫落，護筒底部應坐落在穩定的土層上，并且進入原土0.30。5m。護筒埋設位置應準確其中心點與樁定位點誤差不大于50mm，并應保證護筒的垂度和水平度。The casing was made by 6mm thick steel plate,the lengt8、h should be around 2m and the casing diameter is 850mm。 In order to prevent the outer tube Protection Drilling returned to the pulp caused the hole collapse and retaining barrel off the bottom of the pile casing should be located in the stable on the soil and into the original soil 0。3 0。5m。Casing l9、aying position should be accurate center point，pile anchor point error is not more than 50mm and also should ensure Casing for vertical and horizontal（6）泥漿制作：采用現場所泥漿攪拌機或人工制作，宜先加水并計算體積,在攪拌下加入規定的膨潤土，純堿以溶液的方式在攪拌下緩緩加入，攪拌時間一般不少于3分鐘，必要時還可加入其他外加劑，以增大泥漿比重。另拌制泥漿應根據工藝和穿越土層情況進行配合調整，膨潤土泥漿性能指標制備可按下列參數(砂土層)；粘度19210、5；比重1。18-1。30；含沙率小于6%,膠體率95，PH值7。0-9。0。Mud production：site slurry mixer or artificially produced advised adding water and calculating the volume,after that added with stirring a predetermined bentonite， soda ash solution with stirring was slowly added and the stirring time is generally less than 3 m11、inutes ， if necessary we can also add other admixtures to increase the mud weight. Besides, Mixing mud with the adjustment should be based on the process and through the soil , and the bentonite slurry performance indicators prepared according to the following parameters （ sand layer ） ; viscosity 112、925 ； proportion 1.18 - 1。30 ； sandy rate less than 6 , colloidal rate 95, PH value 7。09.0.（7）旋挖鉆鉆進成孔 Rotary Drill drilling hole（a）以鉆具鉆頭自重和液壓缸加壓作為鉆進壓力，每一回次的鉆進量應以深度儀所示值為參考依據，以鉆機說明書鉆速，鉆壓扭矩為指導，進尺適當，不多鉆也不少鉆。鉆多，輔助時間加長。鉆少,回次進尺少，效率降低。We take drill weight and hydraulic cylinder pressure as the drilling pres13、sure , drilling depth meter should be shown the value reference for speed drilling rig manual the WOB torque for guidance , footage appropriate ， not much drill is also a lot of drilling 。 Drill multi Auxiliary longer . Drilling less footage back to the times , reducing efficiency（b）當鉆頭內裝滿土、砂后，將其提升上14、來,注意地下水位變化情況，并灌注泥漿.When the drill is filled with soil and sand , we raise it up and pay attention to the groundwater level changes then perfuse mud（c)旋轉鉆機將鉆頭內的土卸出，用鏟車及時運走,運離不影響施工作業區。Rotary rig to drill within the soil unloaded then transported with a forklift in a timely manner and transported from 15、the impact of the construction work area（d）關閉鉆頭活門，將鉆頭轉回孔口，降下鉆頭繼續鉆進。Close the shutter then reversal of the drill orifice ， lower the drill bit to continued drilling （e)為保證孔壁穩定,應視表土松散層厚度,孔口下入長度適當的護筒，并保持泥漿面高度，隨泥漿損耗及孔深增加，應及時向孔內補充泥漿,以維持孔內壓力平衡。Should be considered to ensure the stability of hole wall the 16、topsoil loose layer thickness orifice into the appropriate length casing Protection , then keep the mud surface height with mud loss and deep hole should be timely supplement to the hole in the mud , in order to maintain the hole pressure balance。（f）提升鉆頭過快，易產生負壓，造成塌孔.一般鉆頭提升速度控制在，裝滿渣土鉆頭提升0。937M/S，空鉆頭17、升降1.210M/S。If we improve drill too fast ， its easy to produce negative pressure, which will result in hole collapse 。Usually when a drill filled with muck,the lifting speed should be controlled within 0。937M/S and for empty drill,the speed should be 1.210M/S（g）在樁端持力層鉆進時右能會由于鉆頭的提升引起持力層的松馳，因此在接近孔底標高時應18、注意減小鉆頭的提升速度.Due to the enhancement of the drill in the pile end bearing stratum drilling may cause relaxation of the bearing layer elevation thus when drilling near the bottom of the hole we should pay attention to reduce the lifting speed of the drill(h）清孔：因旋挖鉆用泥漿循環,在保障泥漿穩定的情況下，(清除孔底沉渣一般用雙層底撈砂鉆頭，在不19、進尺的情況下，回轉鉆頭使沉渣盡可能地進入斗內,反轉,封閉斗門,即可達到目的.因本工程地質24M以下為粘土層，視具體情況，確定清孔方法，確保沉渣厚度符合要求。Cleanup holes :Because rotary drilling use mud circulation ， so under the circumstance of stable mud protection ( when clear the hole bottom sediment generally we do with double bottom bailing bit , in the case of footage 20、， rotary drill bit so that sediment went into the bucket , inverted closed shutter and this can achieve the purpose .Because of the engineering geology 24M below are the clay layer so we should depend on the specific situation then determine hole cleaning methods ， to ensure the sediment thickness r21、equired（i)鋼筋籠制作：鋼筋籠按設計圖紙及相關規定要求制作。鋼筋表面應潔凈，使用前應將表面污垢、漆皮、鱗銹等清除干凈;鋼筋應平直，無局部彎曲、無裂紋、斷傷。鋼筋接頭焊縫均勻、飽滿、光滑；不得有裂紋、塌陷、咬邊、夾渣，鋼筋表面無明顯燒傷等缺陷.每批焊條都應有出廠合格證。The reinforcement cage production : steel cage was designed according to drawings and related regulations requirements. Reinforced surface should be clean before 22、using.We should clean surface dirt ， patent leather ， scaly rust and the reinforcement should be straight with no local bending , no cracks ， off injured. Reinforced joints should be uniform weld ， full， smooth， without cracks ， collapse , undercut ， slag ， steel surface burns and other defects 。 Ea23、ch batch of electrodes should have factory certification鋼筋籠安裝，視設計樁長的配筋長度及配備的工程吊車技術參數的實際情況,進行分段制作,遂段吊放鋼筋籠,各段之間根據主筋直徑按設計要求采用單面電焊連接。雙點起吊,確保鋼筋籠不變形.當鋼筋籠吊放至設計位置后，在孔口固定鋼筋籠上端.Reinforcement cage installation: According to the actual situation of the design length of pile reinforcement length and with enginee24、ring crane technical parameters ， we should produce in segment , then the segment dipping steel cage main reinforcement diameter between paragraphs design requires single-sided welding . Using twopoint lifting to ensure no deformation of the reinforcement cage . When the reinforcement cage was dippi25、ng to the design position，we fixed reinforcement cage in the upper of the orifice。鋼筋籠保護層墊塊采用現場預制砂漿圓塊.The protective layer of the reinforcement cage pads use the site prefabricated mortar round block（j）下鋼筋籠，鋼筋籠場內運輸可采用人工抬運或加托架轉運，不可使鋼筋籠產生永久變形;鋼筋籠采用雙點起吊，對正后緩緩下入，不準強行壓入。Reinforcing Steel Cage: Reinforceme26、nt cage inside can be transported by artificial lift or bracket transport and the cage cannot be made permanent deformation； The reinforcement cage use dual point lifting , slowly down into the positive ， not allowed to press into by forcement.（k）下導管：導管連接要密封、順直，導管下口離孔底約300mm就可,導管平臺應平整，夾板牢固可靠。Lower c27、onduit ： conduit connection must be sealed , straight， catheter down until the under mouth about 300mm from the bottom of the hole( the catheter platform should be smooth and plywood robust）當鋼筋籠吊放定位后，就可在孔口安放導管平臺,吊放導管。導管采用直徑250mm鋼制標準導管，各節導管及其與承料斗間均以絲扣連接。導管在吊放前，在地面連接作水壓試驗,確保無滲漏方可使用。When the reinforcem28、ent cage dipping positioned , the orifice can be placed with catheter platform then we start to dip catheter . The conduit was taken the 250mm diameter steel standards catheter， sections catheter and the Order of the hopper are threaded connection . Catheter before dipping in the ground connection f29、or water pressure test to ensure no leakage before use（l）澆筑砼：Pouring concrete鋼筋籠，導管下放完畢，做隱蔽檢查，必要時進行二次清孔,驗收合格后，澆筑砼。砼采用現場攪拌。After decentralization of the reinforcement cage ， catheters ,we need to do covert checks , and if necessary,we will do a second hole cleaning ， after acceptance ，we can pour con30、crete（ Concrete are mixing on site)預拌砼應具備設計的強度等級,有良好的和易性，塌落度宜180-220mm。Readymixed concrete should have the strength grade design , good workability , and slump should be 180 220mm初次灌注砼量應嚴格按照要求計算首灌砼立方量,以其數量必須滿足充滿孔底，并埋管深度不少于0.8m。Initial perfusion concrete amount calculated in accordance with the requi31、rements should be strictly cubic amount of initial concrete irrigation and the Quantity must fully filled the bottom of the hole meanwhile the buried depth should not less than 0.8m導管埋深，保證2-4m，隨著砼面上升，隨時提撥和拆除導管，以使導管在砼中始終保持2-4m。且在首批砼的初凝時間前完成砼澆灌，如無法保證，可經過試驗給砼添加緩凝劑。為使砼密實,可利用吊機升降系統慢速振插導管。終灌時,按樁頂設計標高正確掌握最32、后灌注的砼量，使實灌砼面高出設計頂面1D以上，以確保清除浮漿后樁頂砼的完整性。在水下砼灌注時,要勤測砼塌落度，按要求做好試塊，作為質量控制及質量評定的依據。Bury conduit in deep and make sure 24m，with the rising concrete surface，set aside at any time and removal of the catheter to make sure the catheter always keep in concrete 2- 4m 。Besides，we need to finish perfusing the con33、crete Before the initial setting time of the first concrete and if this can not be guaranteed , we can add retarder to the concrete through test . Crane lifting system can be used to make concrete dense slow vibration catheterization 。we can use Crane lifting system the slow vibration inserted cathe34、ter to make sure concrete compaction. Design elevation of the top of the pile when the final irrigation ， proper understanding of the last perfusion concrete amount , the real irrigation concrete surface above the the design top surface 1D to ensure the integrity of the top of the pile of concrete t35、o remove laitance . Perfusion of the underwater concrete to ground measured concrete slump , required to do the test block , as the basis for quality control and quality assessment.砼灌注過程中,為防止鋼筋籠上浮,應采取如下措施，在孔口固定鋼筋籠上端；灌注時間盡量縮短，防止砼進入鋼筋籠時流動性變差，當孔內砼進入鋼筋籠1-2小時,應適當提升導管，減少導管埋深，增大鋼筋籠在下層砼中的埋置深度。During Concret36、e casting process ， in order to prevent steel cage floating we should take the following measures , fixing the upper end of the orifice reinforced cage ； making perfusion time as short as possible to prevent concrete to enter rebar cage which can cause flow variation , when the hole in the concrete 37、into the rebar cage 12 hours ， we should be appropriate to enhance the catheters to reduce catheter burial depth and increasing the embedment depth of the reinforcement cage in the lower concrete灌注結束時，控制樁頂標高,砼面應超過設計標高1D以上，保障樁頭質量。When perfusion was over ， we must control the elevation of the top of t38、he pile ， the concrete surface should be more than the design elevation 1D to protect the pile head quality 鉆機移位:成孔施工完畢且驗收合格后，移至下一樁位。另外當樁距（中心距）小于5m時，后一根樁鉆孔必須在前一根樁砼灌注完成后24小時才能開鉆.The rig shift ： move to the next one bit after the construction is completed into the hole and acceptance . In addition ， w39、hen the pile spacing （ center distance ） is less than 5m , the next pile drilling must be the first 24 hours after a pile of concrete perfusion completed（m)雨季施工 Rainy season construction 露天使用的電氣設備，天關箱的防雨措施應可靠，放置較高位置，電焊機等導電設備應加保護罩。旋挖機雨期施工應有防雷接地并定期檢查。Open use of electrical equipment ， switch boxes , w40、aterresistant measures should be reliable ， placed a higher position。Welding machines and other conductive equipment should be added to the protective cover . Rotary Drilling Rig working during rain period should be lightning protection，grounding and check regularly電氣設備的接地保護就牢固可靠，漏電保護裝置動作靈敏,操作人員應使用絕41、緣工具。檢查有無地基塌陷情況，在旋挖鉆機行走時,務必避開塌陷地段，桅桿還應適當向后傾斜一個安全角度。Ground protection of electrical equipment on a solid ， reliable , sensitive action leakage protection device ， the operator should use insulated tools and check for foundation collapse during rotary drilling rig walking then be sure to avoid the coll42、apse of the lot , the mast also should be appropriate backward tilt a safety point of view鉆機上下托板時，應有防滑措施，避免側滑引起的安全事故。Rig up and down the pallet should be nonslip measures to prevent security incidents caused by the sliding水管、導管、泥漿管不用時,應清理干凈，整好平放。When water pipes, ducts ， mud tubes are not used， we s43、hould clean up the put them flat 施工現場辦公區、生活區所用電器裝置應安全、可靠.在雷電頻落區域，應加裝防雷接地設施.Construction site office area, living area with electrical installations should be safe and reliable . Installation of lightning protection and grounding facilities in the lightning frequency off the area are very important 二44、 砼配比設計要求 Concrete mix design requirements1 原材料及配合比 Raw materials and mixture ratio（1）水泥應符合相關要求，采用免檢水泥并經過測試，嚴禁使用快硬型水泥，水泥必須有出廠合格證，如果水泥出場日期超過三個月對水泥質量有懷疑時應視不同情況進行復檢，復檢合格后方可使用。水泥在運輸及堆放過程中應有防雨防潮措施,不同品種、標號、生產廠家的水泥嚴禁使用在同一根樁砼中并分別堆放.Cement should comply with the relevant requirements , inspectionfree cement 45、and tested , prohibited the use of rapid hardening cement ， the cement must have factory certification ， cement exit date is more than three months then a suspect should be retested depending on the quality of the cement , complex inspection qualified before use . Cement transport and stacking proce46、ss should be rain and moisture measures ， different varieties ， label ， cement manufacturers cannot use with a pile of concrete and stacked separately (2)石子的質量應符合相關要求，每批石料進場應有質保單。碎石的粒徑采用5-40mm，5mm篩余量應為90%100%，40mm篩余量大于5%。石料堆場應選干凈處,嚴禁混入沙土雜質。The quality of the stones should comply with the relevant re47、quirements of each batch the stone approach should warranty single 。 Gravel particle size should be 5 40mm the 5mm sieve margin should be 90 100 and the 40mm sieve margin should be greater than 5 % . Clean stone yard to be elected at non mixed sand impurities.（3）沙的質量應符合相關要求,選用級配合理、質地堅硬、顆粒干凈的中粗砂,砂進場每48、批要有合格證,砂的模數控制在2。33.0之間，在儲運堆放過程中防止混入雜物。Sand quality should comply with the relevant requirements ， selection of gradation， hard texture and clean particles of grit。 sand approach each batch should have a certificate , the modulus of the sand control in is between 2。33.0 , stacked in the storage and t49、ransportation process to prevent mixed with debris2混凝土攪拌 Concrete mixing施工現場設砼攪拌站,由JS750型攪拌機、沙石堆場和水泥庫組成。砼攪拌時應嚴格按配合比稱重砂、石、外加劑。砼原材料投量允許偏差:水泥為2;砂石土為3%；水、外加劑為2%。原材料投料時應依次加入石、砂、水泥和外加劑，砼的攪拌時間不少于90S.砼攪拌過程中及時測試坍落度和制作試塊,拌好的砼應及時澆筑，若出現離析現象應重新攪拌，砼坍落度控制在1822CM.Construction site set concrete mixing station , by t50、he JS750 -type mixer， sand yard and cement silo . Concrete mixing should be strict with the ratio of the weighing sand , stone , admixtures 。 Allowable deviation of concrete and amount of raw materials ： cement 2 % ； the gravel soil 3 ; water ， admixtures of 2 % 。 Raw material feeding should then ad51、ded to the stone , sand , cement and admixtures , concrete mixing time should not less than 90S 。 Test the Slump and production test block during concrete mixing process in a timely manner ， the concrete should be marinated pouring segregation phenomenon should be re-mixed concrete slump control 18-52、 22CM3 砼澆筑 Concrete pouring按相關要求制作試塊，試塊為150150150MM,每根工程樁做一組試塊，清水養護28D后,送交測試,試塊脫模后及時放進現場砌置的水池內養護。Test block, according to the relevant requirements of the production test block should be 150 150 150MM， each pile do a group of test block and clean water after 28 days of curing , sent to test into the53、 scene in a timely manner after ejection of the test block puzzle set within the conservation pool三、 工程質量標準及質量保證措施 Engineering quality standards and quality assurance measures本工程施工及驗收要求遵循相關的標準規定。The construction and acceptance requirements follow standard regulations 。（一）工程質量標準 Engineering quality s54、tandards1原材料和砼強度保證符合設計要求和相關的規定。Raw materials and concrete strength to ensure compliance with design requirements and other relevant provisions .2成孔深度符合設計要求，孔底沉渣厚度小于10CM。Drilling depth can meet the design requirements 。， sediment thickness of the bottom of the hole is less than 10CM3實際澆注量不小于計算體積。The 55、actual pouring amount is not less than the calculated volume .4澆筑后的樁頂標高及浮漿的處理符合設計要求和施工相關規定。The elevation of the top of the pile after pouring and floating pulp processing to meet the design requirements and construction of the relevant provisions （二）允許偏差項目 Tolerance variation project1成樁后的樁孔中心位置偏差,中間56、樁小于1/4D；邊樁不小于1/6D。Deviation into a pile after pile hole center position ， the middle of the pile is less than 1/4D； side pile is not less than 1/6D2鋼筋籠的制作：Reinforcement cage production :（鋼筋保護層：50mm);Reinforced protective layer ： 50mm主筋間距偏差：10mm；Main reinforcement spacing deviation ： 10mm;箍筋間距偏差：20mm57、；Stirrup spacing deviation : 20mm；鋼筋籠直徑偏差：10mm;Reinforcement cage diameter deviation : 10mm;鋼筋籠總長度偏差：100mm；The total length of the reinforcement cage deviation : 100mm;鋼筋搭接長度：10d；Reinforced Lap length ： 10d;焊縫寬度：0。7d；Weld width : 0。7d；焊接厚度：0.3d。Welding thickness : 0.3d。3.樁垂直度小于1%。Pile vertical degre58、e is less than 1%。4.砼施工 Concrete Construction 砼強度等級大于設計砼強度等級；Concrete strength rating is higher than the design concrete strength rating ； 砼坍落度18-22cm 1822cm concrete slump 主筋保護層厚度75mm；main reinforcement protection layer thickness 75mm；所使用的材料必須具有質量保證書和檢測試驗合格報告；The material used must have a quality a59、ssurance books and testing compliance report ；成樁砼質量連續完整，無斷樁、縮徑、夾泥現象，澆筑砼密實度要好,樁頭砼無疏松現象.The quality of the concrete piling is continuous complete , no broken pile necking silted phenomenon , pouring concrete density is better , trailer coupling concrete without loose（三）質量保證措施 Quality assurance measure60、s1。管理措施 Management measures(1)公司的工程技術部直接對該項目的工程質量進行監督和控制，直接掌握質量動態,指導全面質量管理工作，展開嚴格崗位責任制，對各工序、工種實行檢查監督管理，行使質量否決權.Companys engineering department directly supervise and control the quality of the project and to gain direct control over the quality of dynamic guidance of total quality management , expan61、d the strict system of personal responsibility to implement the inspection and supervision of the management of various processes , type of work ， the exercise of the quality of the veto（2）對主要工序設置管理點，嚴格按工序質量控制體系和工序控制點要求進行運轉.Setting management points to major process and we should be in strict accord62、ance with the requirements of the process quality control system and process control point operation（3)實行三級質量驗收制度；每道工序組100自檢;質量100%檢驗；工地技術負責30抽查。The implementation of the three - tier system of quality inspection ; each process group 100% self-test ; quality 100 inspection ； site technology is respo63、nsible for 30 of spot checks（4)認真填寫施工日記。Fill in construction Diary 。2技術措施Technical measures（1）樁軸線及樁位放樣，定位后要進行復測，定位精度誤差不超過5mm。埋設護筒時由測量人員到場,用儀器校正中心后方能固定護筒，保證護筒的垂直度.Loft pile axis and piles bit , to retest after positioning ， the positioning accuracy error of should not more than 5 mm 。 when bury the c64、asings,the surveyor should at the scene， we should fix the casings with the center of instrument calibration, to ensure the verticality of the casings （2）鉆機定位,旋挖鉆機桅桿必須垂直,不合要求隨時糾正.Rig positioning , rotary drilling rig mast must be vertical，if not,we should correct at any time。（3)孔底沉渣檢測小于30cmThe hole 65、bottom sediment detect is less than 30cm（4）確保鋼筋籠的垂直度Ensure the verticality of the reinforcement cage（5）砼攪拌時砂石料經過磅稱稱重，誤差不超過3,嚴格控制水灰比。根據現場砂石料的含水率情況調整加水量。每根樁做1-2次坍落度試驗。Aggregate concrete mixing after weighing scales， weighing error should less than 3% , and we should be strict control of the watercemen66、t ratio . Adjust the amount of water according to the site aggregate moisture content and each pile we should have 12 slump test （6）根據地層特點及時調整泥漿性能，防止鉆孔擴徑、縮徑和坍塌，控制好砂層土的泥漿相對密度，確保孔壁穩定。Timely adjustment mud performance according to the formation characteristics in order to prevent drilling flaring , nec67、king and collapse , and good control of the sand layer soil slurry relative density to ensure the stability of the hole wall四、 施工總體計劃 Construction master plan（一）施工總體計劃 Construction master plan本工程施工合同約定： 180 天。根據工期要求。樁基設計及場地等條件,計劃進旋挖鉆機一臺及其配套設備.The construction contract ： 180 days. According to the sc68、hedule requirements . Pile foundation design and site conditions , we plan to purchase a rotary drilling rig and its ancillary equipment 施工中采用隔樁跳打（保證相鄰樁距大于4倍樁徑），鉆孔、砼澆筑分開作業的方式進行施工。同時根據生產進程及時優化，提高施工效率.We take the skip drilling during construction （ to ensure adjacent pile spacing is greater than four 69、times the pile diameter ） , drilling，concrete pouring operations separately for construction 。 Simultaneously we optimized according to the production process in a timely manner to improve the efficiency of construction （二)施工進度計劃 Construction schedule根據以往施工經驗及網絡優化成果，施工750工程樁用時情況分析如下:According to the70、 construction experience and network optimization based on past achievement ，Constructiing the 750 project pile time use,refer to the following analysis:鉆機移位、就位及開鉆準備；The rig shift , in place and prepare drilling 鉆進成孔;Drilling into a hole吊放鋼筋籠、導管；Dipping reinforcement cage and catheter ；水下砼澆筑；Underwa71、ter concrete pouring根據以上分析,一臺旋挖轉機每天（8h）可成孔 2 個，砼澆筑成樁 2 個。 Based on the above analysis , a rotary rig work every day (8h) can dig 2 holes and two concrete pouring into piles八 主要設備，工具配置 Major equipment ， configuration tools根據土層特點，樁徑以及樁長情況,選用8R-30旋挖轉機，制漿設備，泥漿泵。Based on soil characteristics , pile diame72、ter and pile length ,we choose 8R30 rotary drilling rig ， pulping equipment , mud pump主要設備工具表如下Main equipment tools table as following 序號serial number 名稱Name 型號Model 數量Quantity 價值（萬元)Value 備注Note 1旋挖鉆機 Rotary drilling rig 12泥漿泵 Mud pump 23制漿機 Pulper 14砼攪拌機 Concrete mixer 15液壓汽車吊Hydraulic truck crane26翻斗車 Dumpers 57電焊機 Welding machine 38挖掘機 Excavator 19裝載機Loaders 110排污泵Sewage pump211泥漿比重計Mud hydrometer212水準儀Level113全站儀 Total station 114鉆斗Drilling bucket115導管 Catheter/ conduit 116導管操作平臺117上料斗 Hopper118發電機組 Generator sets 219清水泵Clean Water Pump220砼試模等 Concrete tryout12