1、斯里蘭卡阿塔納水廠場平工程錨桿分項工程Sub-Engineering of Anchor for Site LevelingSpecific Method Statement專項施工方案編制：Prepared By:審核：Reviewed By:批準(zhǔn)：Approved By:CMEC公司斯里蘭卡阿塔納水廠項目部 Gampaha,Attanagalla & Minuwangoda Integrated Water Supply Scheme 編制時間:2017年09月09日Preparation Date:September 9th , 2017目 錄 Contents第一節(jié)、編制依據(jù)-

2、01 I. Preparation Basis第2節(jié) 、施工步驟-03 II. Construction Arrangement 一 ）、施工步驟-03 1. Construction Arrangement 二）、勞動力組織安排-03 2Manpower Plan 三）、機(jī)械設(shè)備配置-04 3.Mechanical Equipment Preparation 四）、主要儀器設(shè)備-05 4. Main Instrument and Equipment第三節(jié)、錨桿主要施工方法-06 III Main Construction Method of Anchor 一）、總體方案-06 1. Over

3、all Scheme 二）、施工準(zhǔn)備-08 2. Construction Preparation 三）、錨桿成孔工藝-09 3. Bore-forming Process of Anchor第四節(jié)、施工進(jìn)度計劃-26 IV Construction Progress Schedule附圖一、質(zhì)量保證機(jī)構(gòu)框架圖-32 Attached Figure-1 Frame Chart of Quality Assurance Organization 附圖二、安全保證機(jī)構(gòu)框架圖-33 Attached Figure-2 Frame Chart of Safety Assurance Organizat

4、ion第1節(jié) 、編制依據(jù) I. Preparation Basis1、 阿塔納水廠工程招標(biāo)文件中關(guān)于場地平整的相關(guān)內(nèi)容及相關(guān)技術(shù)條款。 1. The relevant contents and related technical terms about Site Preparation included in the Bidding Document of Gampaha,Attanagalla & Minuwangoda Integrated Water Supply Scheme.2、 阿塔納水廠工程場地平整設(shè)計施圖、圖說（送審版）。 2. Site Preparation Dra

5、wings and Design Description of the Site Preparation of Gampaha,Attanagalla & Minuwangoda Integrated Water Supply Scheme. (Approval Version)3、 阿塔納水廠工程地質(zhì)勘探報告及實(shí)地考察施工現(xiàn)場周邊環(huán)境情況。3. Report of Geological Engineering Exploration for proposed Water Treatment Plant and on-the-spot investigation for the sur

6、rounding environment of said construction site.4、中國現(xiàn)行國家標(biāo)準(zhǔn)、施工技術(shù)規(guī)范、規(guī)程、質(zhì)量檢驗(yàn)評定標(biāo)準(zhǔn)及驗(yàn)收方法、安全檢測標(biāo)準(zhǔn)及技術(shù)規(guī)程、文明施工要求等。4. Current national standards in China, technical specifications, procedures, quality inspection, evaluation standards as well as acceptance methods of construction, safety inspection standards and

7、technical regulations, civilized construction requirements, etc.巖土錨桿與噴射混凝土支護(hù)工程技術(shù)規(guī)范 GB50086-2015Technical Code for Engineering of Ground Anchorages and Shotcrete Support GB50086-2015預(yù)應(yīng)力筋用錨具、夾具和連接器 GBT 14370-2015 Anchor, Grip and Coupler for Prestressed Tendons GBT 14370-2015 施工現(xiàn)場臨時用電安全技術(shù)規(guī)范 JGJ46-2005

8、Technical Code for Safety of Temporary Electrification on Construction Site JGJ46-2005第 1 頁 共 35 頁第2節(jié) 、施工步驟 II. Construction Arrangement1、 施工步驟 1.Construction Arrangement主要施工內(nèi)容有：施工準(zhǔn)備、錨桿孔定位及鉆孔(含不良地質(zhì)段固結(jié)灌漿處理)、錨桿加工編制、清孔下錨、錨固段注漿（含二次劈裂注漿）、錨桿腰梁及錨斜托澆筑、錨桿張拉、補(bǔ)充注漿及封錨等工作。The main construction contents include:

9、construction preparation,anchor hole positioning and drilling (including consolidation grouting treatment for poor geological section ),anchor processing preparation, hole cleaning and anchoring, grouting for anchorage section (including secondary splitting grouting),concrete pouring for intermediat

10、e beam of anchor and anchor inclined supporting, anchor tension, supplementary grouting and anchor seal work, etc.2、 勞動力組織安排2.Manpower Plan（1）根據(jù)工程的特點(diǎn)及施工組織設(shè)計的要求配備勞動定員及設(shè)置施工組織機(jī)構(gòu),主要勞動力組織見下表：（1）As per this project characteristic and requirement of construction organization design to arrange workers and s

11、et up construction organization.Main manpower as follows:序號S/N工種Position人數(shù)Qty主要工作內(nèi)容Main Work Content1施工員Engineer5負(fù)責(zé)測量放線、施工指導(dǎo)及質(zhì)量控制Measure and setting out,construction guidance and quality control2鉆機(jī)司機(jī)Drilling rig driver2錨固鉆機(jī)操作Operate anchorage drilling rig3砂漿攪拌工Mortar mix worker2攪拌桶操作Mix bucket opera

12、tion4錨索工Anchor cable worker4負(fù)責(zé)錨索安裝Anchor cable installation5綜合輔助工Comprehensive assistant worker8負(fù)責(zé)輔助作業(yè)Normal work6電工Electrician2負(fù)責(zé)施工中涉電作業(yè)Electricity operation7鋼筋工Steel bar worker8負(fù)責(zé)鋼筋制作、綁扎、安裝作業(yè)Steel bar fabrication,binding and installation8模板工Form worker13負(fù)責(zé)模板制作、安裝、加固作業(yè)Formwork fabrication, installa

13、tion and strengthening（2） 錨桿施工組織機(jī)構(gòu)： (2)Construction organization of anchor:現(xiàn)場技術(shù)負(fù)責(zé)人：劉濤；生產(chǎn)負(fù)責(zé)人：胡延輝；Site technical in charge: Liu Tao Site engineer: Hu Yanhui 專職質(zhì)量檢查：李慶東；Special quality inspector: Li Qingdong 3、主要機(jī)械設(shè)備 3.Main Mechanical Equipment預(yù)應(yīng)力錨桿施工進(jìn)場的主要機(jī)械設(shè)備如表1所示The main mechanical equipment prepared

14、 for prestressed anchor construction are shown in figure-1 below.表1 錨桿施工配備機(jī)械設(shè)備表 Figure-1 Mechanical Equipment List for Anchor Construction機(jī)械名稱Equipment Name規(guī)格型號Specification and Model數(shù)量Qty備注Note錨固鉆機(jī)Anchorage drilling rig優(yōu)博林868型Youbolin （Type 868） 2臺2 nos.注漿設(shè)備Grouting equipment BLW-130型攪漿桶Mortar mixi

15、ng bucket with type BLW-1302套2 sets含不良地質(zhì)段處理Including the treatment for poor geological section空 壓 機(jī)Air compressor12m3柴油12m³Diesel1套1 set備用Standby發(fā)電機(jī)Generator250KW2套2 sets備用Standby泥漿泵Mud pumpBW1501套1 set雙作用空心千斤頂Double acting hollow jackRRH-6065套5 sets混凝土施工設(shè)備Concrete construction equipment3套3 set

16、s材料運(yùn)輸車Transport vehicle for material 5T2輛2 nos.其他設(shè)備Other equipment據(jù)需要配置Prepared as per needs錨桿輔助施工Aided anchor construction木工圓盤鋸Woodworking circular saw380V、7.5KW1臺1 set模板制作Formwork fabrication鋼筋斷鋼機(jī)Steel bar cutting machine380V、3.8KW1臺1 set鋼筋加工Steel bar process鋼筋切割機(jī)Steel bar cutter380V、2.5KW1臺1 set鋼

17、筋加工Steel bar process鋼筋彎箍機(jī)Steel bar bender380V、3.8KW1臺1 set鋼筋加工Steel bar process電焊機(jī)Electric welding machine380V、3.8KW1臺1 set鋼筋加工Steel bar process木工手提圓盤鋸Woodworking portable circular saw220V.1.5KW8臺8nos.模板加工Formwork process4、主要儀器設(shè)備4. Main Instruments and Equipment預(yù)應(yīng)力錨桿施工配備的主要儀器如表2所示Instruments List fo

18、r anchor construction are shown in figure-2 below表2 主要測量、試驗(yàn)、質(zhì)檢、監(jiān)測儀器設(shè)備表Main Instruments for Measurement, Test, Quality Inspection and Monitoring List序號NO.設(shè)備名稱Instrument Name廠牌及規(guī)格型號Brand, Specification and Model數(shù)量Qty備注Note1全站儀Total StationSET230RK、NTS302R+1錨孔定位Anchor hole positioning2水準(zhǔn)儀Water LevelC32

19、II、DSZ21350m鋼尺Steel Tape(50m)34磨光機(jī)Polishing Machine25試樣切割機(jī)Sample Cutting Machine16砂漿稠度儀Mortar Consistometer17電動重型擊實(shí)儀Electric Heavy Compaction Apparatus電 動electric type18其它儀器Other Instrument根據(jù)需要配置Prepared as per needs第三節(jié) 錨桿主要施工方法 III. Main Construction Method of Anchor （1） 、總體方案 1.Overall Scheme錨桿施工與

20、邊坡開挖施工同步進(jìn)行，上層邊坡支護(hù)施工完成，開挖至預(yù)應(yīng)力錨桿施工位置后，及時組織進(jìn)行腰梁及預(yù)應(yīng)力錨桿施工，完成邊坡防護(hù)，減少邊坡暴露時間。The anchor construction shall be performed simultaneously with the slope excavation. After the completion of supporting construction of upper slope, excavating to the construction location of prestressed anchor, then carrying out t

21、he construction of intermediate beam and prestressed anchor and finishing supporting work for slope in order to reduce exposure time of slope. 1) 、準(zhǔn)備工作：機(jī)具配備質(zhì)量和數(shù)量，人員配置數(shù)量和結(jié)構(gòu)等必須與預(yù)應(yīng)力錨桿施工相適應(yīng)，滿足施工需要；完成原材料進(jìn)場及試驗(yàn)檢測；完成施工技術(shù)方案、開工報告等技術(shù)資料的編寫、上報和審批，技術(shù)交底資料的下發(fā)學(xué)習(xí)，原材料送檢、報批手續(xù)及資料收集。 1).Preparation Work: The quality and

22、quantity of equipment preparation together with the quantity and structure of human resource arrangement must be compatible with the construction of prestressed anchor to meet the construction needs; Completing the approach and test of raw materials ;Completing the preparation, submitting and approv

23、al of related technical documents including construction program and construction starting report, etc; Issuing technical information to staff for study; Conducting raw materials inspection, approval procedures and data collection.2) 、錨桿施工順序：錨桿施工按從上到下（可根據(jù)現(xiàn)場情況適當(dāng)調(diào)整）分序加密的原則進(jìn)行施工。錨桿施工平面布置詳見附圖（一）（以從上至下為例）

24、所示，然后及時進(jìn)行后續(xù)各工序的施工。 2).Construction Sequence of Anchor: The anchor construction shall be conducted from the top to the bottom(some proper adjustment can be made according to the actual situation) under the principle of sequence and denseness. Grout leaking between anchor holes shall be avoided in ord

25、er to prevent the serious impact on construction effect. See Attachment 1 for detailed Plan of Anchor Arrangement(take the construction order from the top to the bottom as example). The following various construction work shall be carried out timely.（2） 、施工準(zhǔn)備2. Construction Preparation2.1、錨桿的簡述2.1 B

26、rief Introduction of Anchor2.1.1、錨桿長度：15.020.0m，錨桿錨固長度58m,以進(jìn)入原混凝土基礎(chǔ)頂向下不少于1.0m控制。2.1.1. Length of anchor: its length shall be 15.020.0m and the anchorage length shall be 58m.The depth that the anchor hacked into the original concrete foundation shall be not less than 1m. 2.1.2、錨桿入射角度：25度2.1.2 Injecti

27、on Degree:25 degree2.1.3、錨桿直徑：150mm2.1.3 Diameter of anchor:150mm2.1.4、錨桿：采用鋼絞線¢s17.8-1860 執(zhí)行標(biāo)準(zhǔn)GB/T 5224-2014，錨桿規(guī)格采用絞線3¢s17.8-1860、絞線2¢s17.8-1860；沿錨桿長度每隔2000mm，采用48*3.5mm鋼管制作定位隔離支架；2.1.4 Anchor: The steel strand with the specification and model of ¢s17.8-1860 shall be selected in

28、 line with the operative norm of GB/T 5224-2014.The specification of anchor has two types including 3¢s17.8-1860 and 2¢s17.8-1860. The steel pipe with 48*3.5mm shall be used to make positioning isolation stent along the length of anchor every2000mm.2.1.5、錨具：錨具（M17-2,2孔）設(shè)計值340KN，與鋼絞線2¢

29、s17.8-1860配套，錨具（M17-3,3孔）設(shè)計值380KN，與鋼絞線3¢s17.8-1860配套， 執(zhí)行規(guī)范GB50086-2015。2.1.5 Anchorage: The designed strength of M17-2 anchorage with 2 holes shall be equal or more than 340KN which match with that steel strand with 2¢s17.8-1860; The designed strength of M17-3 anchorage with 3 holes shall

30、be equal or more than 380KN which match with that steel strand with 3¢s17.8-1860. Two types anchorages shall conform to the operative norm of GB50086-2015.2.1.6、錨板：錨板尺寸300*300*25(mm)，錨板中間圓孔尺寸根據(jù)錨具圓孔確定（錨具3孔），墊板的圓孔外徑等于錨具圓孔外邊距；錨板尺寸300*300*25(mm)，錨板中間圓孔尺寸根據(jù)錨具圓孔確定（錨具2孔），墊板的圓孔外徑等于錨具圓孔外邊距。執(zhí)行規(guī)范GB50086-2

31、0152.1.6 Anchor plate: The size of anchor plate shall be 300*300*25(mm). The size of round hole located at the center of anchor plate shall be determined according to the round hole of anchorage(with 3 holes). The external diameter of round hole for inserted plate shall be equal to dimension of the

32、margin of anchorage. The size of anchor plate shall be 300*300*25(mm). The size of round hole located at the center of anchor plate shall be determined according to the round hole of anchorage(with 2 holes). The external diameter of round hole for inserted plate shall be equal to dimension of the ma

33、rgin of anchorage. The standard of GB50086-2015 shall be complied with. 2.1.7、錨桿抗拔：待腰梁施工完畢立即進(jìn)行養(yǎng)護(hù)，且腰梁、錨桿混凝土強(qiáng)度達(dá)到80%后才能進(jìn)行錨桿抗拔實(shí)驗(yàn)檢測；2.1.7 Tensile testing of anchor: The curing work shall be carried out at once after the completion of intermediate beam construction and the tensile testing of anchor c

34、ould be conducted after the concrete strength of intermediate beam as well as anchor up to 80%.錨桿檢測實(shí)驗(yàn)按下列規(guī)范進(jìn)行：The anchor test shall be performed conforming to the following standards:（3） 、錨桿成孔工藝3. Bore-forming Process of Anchor錨桿施工工藝流程圖：Anchoring Construction Process Flow Chart3.1、技術(shù)參數(shù)：3.1 Technical

35、Parameters:在土方開挖或回填施工的同時，留設(shè)錨桿工作面（錨位以下500mm）。預(yù)應(yīng)力錨桿采用風(fēng)動潛孔錘施工工藝，錨桿長度1520m,錨桿錨固長度約5-8m。Reserve anchor working area(500mm below anchoring point) while excavating or backfilling of earthwork. Air-driven down-hole hammer construction technology shall be adopted for prestressed anchor whose length is 15-20m

36、 and anchorage length is about 5-8m.3.2、風(fēng)動潛孔錘施工方法 3.2. Air-driven Down-hole Hammer Construction Method 3.2.1、根據(jù)設(shè)計圖紙要求，測量人員測定錨桿孔的孔位，打入標(biāo)樁，注明錨孔編號（詳見附圖一、二、三）。鉆機(jī)安裝好后，進(jìn)行全面質(zhì)量檢查，檢查鉆機(jī)方位、傾角、水平度和開孔鉆頭落點(diǎn)差。檢查合格后再進(jìn)行施工。3.2.1 According to requirement of drawing, surveyors measure and determine the location of anchor

37、age hole, hammered it into the relevant pile and indicate serial number of the anchor hole(see Attachment 1,2,3). After completing the drill machine installation, overall quality inspection shall be performed for position, inclination and levelness of the drill and placement difference of opening bi

38、t. Construction shall be continued after the inspection is passed.3.2.2、錨孔采用風(fēng)動潛孔錘鉆孔施工，能有效地避免沖刷坡體，施工速度快。錨桿孔施工選用優(yōu)博林868型錨固鉆機(jī)，錨孔直徑約150mm，設(shè)計錨孔深度為5-8m，與水平夾角25度成孔。3.2.2 Adopt air-driven down-hole hammer for anchor hole construction to effectively avoid the erosion of the slope. Fasten the construction spee

39、d. Adopt type 868 Youbolin anchorage drilling rig for anchor hole construction. The diameter of the anchor hole is about 150mm, the designed depth of the anchor hole is 5-8m, 25 degree bore-forming with horizontal angle.3.2.3、錨孔鉆孔技術(shù)參數(shù)根據(jù)所鉆部位孔內(nèi)地層情況確定。3.2.3 The technical parameter of anchor hole is bas

40、ed on the geological condition of the drilled location.3.2.4、鉆壓：鉆孔過程中，鉆壓保持平穩(wěn)，不得隨意增減壓力。 3.2.4 Drilling pressure: keep stable pressure during drilling and dont change the pressure randomly.3.2.5、轉(zhuǎn)數(shù)：正常鉆孔中，保持中等轉(zhuǎn)數(shù)。松散土層及破碎巖石中采用低轉(zhuǎn)數(shù)，完整基巖中鉆孔中適當(dāng)提高轉(zhuǎn)數(shù)。3.2.5 Revolving speed: keep medium speed in normal drilling

41、proceed. Keep low speed for the loose soil and broken rock. Appropriately improve the speed for unbroken bedrock.3.2.6、鉆孔過程中，隨時保證孔內(nèi)排渣暢通，及時排出孔內(nèi)巖渣。3.2.6 During the drilling proceed, remove the residue timely and keep the inside hole smooth.3.3、主要施工方法：3.3 Main Construction Methods 3.3.1、坡面修整3.3.1 Clean

42、 Surface of Slope錨桿施工前，首先用人工及時按照從上而下分層修坡。開挖至灌注樁樁身邊緣時，每層開挖高度為錨桿上下橫梁間距大小，嚴(yán)格控制超挖，直至開挖至下級平臺，然后再開挖腰梁基礎(chǔ)并施作錨桿。完成每層坡面開挖后，若為土質(zhì)坡，及時用彩條布覆蓋，防止雨水沖刷邊坡。Before anchor construction, arrange manpower to modify the slope surface timely from top to bottom layer by layer. When excavated to edge of the filling pile body,

43、 excavation height of each layer is equal to the spacing between intermediate beams. Over excavation is strictly controlled. Intermediate beam foundation can be excavated until excavating to the next terrace, and carry out the anchor working. After each slope excavation completed, if occurred soil s

44、lope, it shall be covered by tarpaulin to avoid erosion by rain.3.3.2、施作錨孔3.3.2 Anchor Hole Drilling錨孔在腰梁基礎(chǔ)開挖完成，并經(jīng)坡面地質(zhì)條件確定能滿足錨桿施工要求后進(jìn)行。Anchor hole shall be drilled after completing foundation excavation of intermediate beam and ensuring that geological condition of slope can meet the requirement of

45、anchor construction.3.3.3、錨孔測放3.3.3 Anchor Hole Measure and Setting out根據(jù)實(shí)際坡面，先按設(shè)計布置要求，將錨孔位置準(zhǔn)確測放在坡面上，并用紅油漆在現(xiàn)場施工部位標(biāo)明錨桿開孔位置（詳見附圖一）。如遇坡面不平順或特殊困難場地時，須經(jīng)設(shè)計單位認(rèn)可，在確保坡體穩(wěn)定和結(jié)構(gòu)安全的前提下，適當(dāng)調(diào)整錨孔定位。對測放并驗(yàn)收合格的錨孔位置進(jìn)行編號，并用油漆標(biāo)示在現(xiàn)場坡面上，該編號作為錨桿制作編號的依據(jù)。Based on existing slope surface, position of anchor hole shall be measured

46、 and set out exactly and marked by red paint at the construction point according to designed arrangement(see Attachment 1 for details). If uneven slope surface or special geological condition occurred, adjust position of anchor appropriately on premise of getting approval from design unit and ensuri

47、ng stability of the slope and safety of the structure. Position of anchor holes which have been measured, set out and verified shall be numbered and marked on the slope surface with paint. The serial number shall be regarded as anchorage making evidence . 3.3.4、鉆孔設(shè)備3.3.4 Drilling Equipment 為提高鉆孔效率和保

48、證鉆孔質(zhì)量，鉆孔機(jī)具采用優(yōu)博林868型錨固鉆機(jī)，潛孔沖擊成孔。In order to improve drilling efficiency and guarantee drilling quality, type 868 Youbolin anchorage drilling rig shall be adopted to drill.3.3.5鉆機(jī)就位3.3.5 Position of Drilling Machine根據(jù)坡面準(zhǔn)確測放錨桿孔位，準(zhǔn)確安裝固定鉆機(jī)，并嚴(yán)格認(rèn)真進(jìn)行機(jī)位調(diào)整，確保錨孔開鉆就位縱橫誤差、高程誤差、鉆孔傾角和方向、方位符合中國規(guī)范標(biāo)準(zhǔn)。Exactly measure

49、and set out the anchorage position according to slope, accurately fix drilling machine and strictly adjust the machines position to ensure the deviation in vertical and horizontal direction and elevation conform to Chinese standard. Ensure the drilling angle and direction in accordance with Chinese

50、standard.、鉆孔方式 Drilling Methods錨孔鉆孔采用干鉆，以確保錨固工程施工不至于惡化邊坡巖土工程地質(zhì)條件和保證孔壁的粘結(jié)性能，難以鉆孔時方可采用水鉆。Adopt dry drilling method to ensure that anchorage construction will not deteriorate the geological condition of the slope and guarantee the adhesive property of the hole wall. Water drilling method shall be adopt

51、ed only when it is hard to drill. 、鉆孔工藝 Drilling Process 錨桿鉆孔施工要加強(qiáng)鉆機(jī)的導(dǎo)向作用，及時檢測孔斜誤差，合理采用糾偏措施，確保錨桿鉆孔滿足設(shè)計及規(guī)范要求。鉆孔過程中對每個孔的地層變化，鉆孔狀態(tài)(鉆壓、鉆速)、地下水及一些特殊情況作好現(xiàn)場施工記錄。如遇地質(zhì)情況與地勘報告不符出現(xiàn)不良鉆孔現(xiàn)象時，須立即停鉆，及時進(jìn)行孔道固壁灌漿處理(灌漿壓力0.10.2MPa)，待水泥砂漿初凝后，重新掃孔鉆孔。Strengthen guide role of drilling machine during the anchor hole drilling

52、, check deviation error of hole timely and adopt reasonable corrective measure to ensure anchor hole meeting design requirements and specification. The stratum change, drilling status(drilling pressure and speed), ground water and some special circumstances during the drilling work shall be recorded

53、 in site. If geological conditions are not matched with geological report which causing undesirable drilling , stop the drilling immediately. Grouting for braced hole wall(grouting pressure as 0.10.2MPa) shall be carried out timely. After initial setting of cement mortar, clean the hole and restart

54、the drilling work. a、 滲水及塌孔的處理a. Treatment of Water Seepage and Hole Collapsing孔內(nèi)有滲水時，在鉆孔過程中或鉆孔結(jié)束后吹孔時，從孔中吹出的都是一些小石粒和團(tuán)粒而無粉塵，巖粉多貼附于孔壁。當(dāng)錨孔深度已滿足要求，則以高壓風(fēng)吹凈，直至吹出清水。During drilling or blowing hole after drilling, gravel and aggregate without dust are blew out from holes if water seepage occurred in hole ,and rock powder generally is attached to hole wall. When the depth of anchor hole has met the requirements, blow