廠區(qū)室外中壓電纜敷設(shè)施工方案

1、tdi train - infrastructure electrical system installationmv cable pulling construction plantditdi 聯(lián)合裝置聯(lián)合裝置- -基礎(chǔ)設(shè)施電氣系統(tǒng)安裝基礎(chǔ)設(shè)施電氣系統(tǒng)安裝中壓電纜敷設(shè)施工方案中壓電纜敷設(shè)施工方案 b11/30/2009issued for commentsa11/26/2009issued for commentsrevdatedd/mm/yystatusprepared bychecked byapproved bydocument revisions目目 錄錄content一一. 概況概

2、況 overview.31.1 工程概況工程概況 project overview.31.2 施工范圍施工范圍 scope of work.3二編制依據(jù)二編制依據(jù) compilation basis .4三三 施工工藝流程：施工工藝流程：construction process .4四四. 前期準(zhǔn)備前期準(zhǔn)備 preparation.44.1 技術(shù)準(zhǔn)備技術(shù)準(zhǔn)備 technical preparation.44.2 材料準(zhǔn)備材料準(zhǔn)備 material preparation.54.3 主要機(jī)具準(zhǔn)備主要機(jī)具準(zhǔn)備 main equipment preparation .54.4 作業(yè)環(huán)境準(zhǔn)備作業(yè)環(huán)境準(zhǔn)

3、備 work environment preparation.6五五. 敷設(shè)施工敷設(shè)施工 work of cable pulling.65.1 電纜敷設(shè)施工工序電纜敷設(shè)施工工序 work procedure.65.2 機(jī)具布置機(jī)具布置 layout of tools.65.2.1 電纜的搬運(yùn)及支架架設(shè)電纜的搬運(yùn)及支架架設(shè) cable removal and cable tray.65.2.2 卷揚(yáng)機(jī)與滑輪的布置卷揚(yáng)機(jī)與滑輪的布置 winch and pulley arrangement.65.3 電纜展放電纜展放 lay-off cable.105.4 電纜敷設(shè)、固定電纜敷設(shè)、固定 cable

4、 laying and fixing.12六六. 覆砂蓋磚覆砂蓋磚 spread sand and cover bricks.12七七. 回填土回填土 backfill earth .13八八. 埋標(biāo)樁埋標(biāo)樁 burying stake.13九九. 掛標(biāo)志牌掛標(biāo)志牌 hanging signs.13十十. 質(zhì)量控制質(zhì)量控制 quality control.1310.1 主控項(xiàng)目主控項(xiàng)目 master items.1310.2 一般項(xiàng)目一般項(xiàng)目 general items.14十一十一. 成品保護(hù)成品保護(hù) finished protection .14十二十二. 質(zhì)量記錄質(zhì)量記錄 quality

5、 record.1412.1 質(zhì)量保證資料質(zhì)量保證資料 quality assurance information.1412.2 施工記錄施工記錄 construction of record.15十三十三. 安全生產(chǎn)、文明施工要求和措施安全生產(chǎn)、文明施工要求和措施 safety and civilized construction requests and measures .15一一. 概況概況 overview1.1 工程概況工程概況 project overview項(xiàng)目名稱： tdi 聯(lián)合裝置廠區(qū)中壓電纜敷設(shè)施工。project name: tdi train plant medium

6、 voltage cable pulling work.本工程涉及三個(gè)變電站，分別是現(xiàn)有的 220/35kv a472 變電站、現(xiàn)有的 35/10kv b301s 變電站以及新建的 35/10kv c581 變電站，工作內(nèi)容為三個(gè)變電站之間和從三個(gè)變電站接至 mv 用戶的電力電纜、控制電纜、接地電纜的敷設(shè)。the project involves three substations, namely the existing 220/35kv a472 substation, the existing 35/10kv b301s the 35/10kv c581 substation and a

7、 new substation. this is the power, control and grounding cable pulling among three substations and for mv users connected to the three substations.1.2 施工范圍施工范圍 scope of work1) a472 建筑（建筑（220/35kv 變電站）出線回路：變電站）出線回路：a472 building(220/35kv substation) outlet circuit由 a472 變電站引出 3 路 35kv 出線。其中：一路引至 b30

8、1s 建筑（35/10kv 變電站）原 1#主變，原 1#主變電纜將抽出，與新增 4#主變連接；另兩路引至 35/10kv c581 變電站 1#主變和 2#主變。回路采用 fs-yjy-26/35kv-1*300mm2單芯電纜，直埋敷設(shè)。去 c581 的兩路 35kv 線路，敷設(shè)時(shí)沿不同路徑，以避免兩回線路同時(shí)受損。pull three 35v outgoings from a472 substation. of which: the first outgoing is led to b301s building (35/10kv substation) the original one #

9、 main transformer, pull the original one # main transformer cable out, and connect to the adding 4 # main transformer; the other two outgoings are led to 35/10kv c581 # 1 and substation 2 # main transformer. use fs-yjy-26/35kv-1 * 300mm2 single-core cables for loop and buried pulling. two 35kv lines

10、 to c581 are laid along different paths to avoid damage of the two loops.2) b301s 建筑（建筑（35/10kv 變電站）出線回路：變電站）出線回路：b301s building (35/10kv substation) outlet circuit:由 b301s 變電站引出 7 路 10kv 出線。全部引至 b399 中心制冷站?；芈凡捎?10kv 截面為95mm2的三芯鎧裝電纜，由 b301s 南面現(xiàn)有的電纜井引出直埋至裝置。pull 7 10kv outgoings from b301s substation

11、 to b399central refrigeration station. loop uses 10kv three-core armored cable with cross-section 95mm2 and pull out from the existing cable well in the south of b301s then buried lay to the device. 3) c581 建筑（建筑（35/10kv 變電站）出線回路：變電站）出線回路：c581 building (35/10kv substation) outlet circuit:由 c581 引出 1

12、0 路 10kv 線路，分別為 a507 的四臺變壓器，b551 的兩臺變壓器，b553tda 裝置氫氣壓縮機(jī) 2 臺，c521 鹽酸裝置氯氣壓縮機(jī) 1 臺，鹽酸壓縮機(jī) 1 臺提供電源。其中，變壓器回路采用 10kv 截面為 185mm2的三芯鎧裝電纜，馬達(dá)回路采用 10kv 截面為 95mm2的三芯鎧裝電纜。以上電纜線路均沿規(guī)劃路徑埋地敷設(shè)。10 10kv lines led from c581 are used to supply power to a507s four transformers, b551 two transformers, b553tda 2 sets of hydro

13、gen compressor unit, c521 hydrochloric acid chlorine gas compressor unit, and hydrochloric acid compressor unit respectively. among them, transformer circuit uses x 3-core armored cable with 10kv cross-section 185mm2, motor circuit uses three-core armored cable with 10kv cross-section 95mm2. all cab

14、le lines will be laid underground along the planning path.4) 接地電纜回路：接地電纜回路：ground cable loop: 從 a472 敷設(shè)一根 95mm2裸銅線去 c581，同時(shí)從 c581 敷設(shè)四根 95mm2裸銅線，分別引至b551、a507、b553 和 c521，作等電位聯(lián)結(jié)。以上電纜線路均沿規(guī)劃路徑埋地敷設(shè)。lay a 95mm2 bare copper wire to c581 from a472. meanwhile lay four bare copper wires to b551, a507, b553 a

15、nd c521 for equipotential bonding. all cable lines will be laid underground along the planning path.overview 5) 控制電纜回路：控制電纜回路： control cable circuit:安裝在 hcl 裝置現(xiàn)場的 3.6mw 馬達(dá)上的電流信號通過一根直埋敷設(shè)的鎧裝控制電纜直接接入10kv 開關(guān)柜。the current signal installed on 3.6mw motor in the hcl devices site passes through a buried arm

16、ored control cable direct access to 10kv switchgear.由變壓器出線柜去 c581 以外的變壓器，采用兩根分別為 10*2.5mm2、4*2.5mm2屏蔽鎧裝控制電纜，由中壓轉(zhuǎn)接柜引出，與中壓電纜同路徑敷設(shè)至相關(guān)變壓器室。其中，10*2.5mm2 電纜直接接至溫控箱，4*2.5mm2 電纜可集中從某間變壓器室引出，沿橋架至相關(guān) pcs 樓 ats 柜。transformer outlet cabinets are connected to other transformers not in c581 by using two 10 * 2.5mm

17、2, 4 * 2.5mm2 shield sheathed control cable respectively. the 10 * 2.5mm2 cable directly is connected to the temperature control box and 4 * 2.5mm2 cable are led out from transformer room, along the bridge to the relevant pcs floor ats cabinet. 二編制依據(jù)二編制依據(jù) compilation basis1）根據(jù)電氣包（中壓部分）招標(biāo)文件及招標(biāo)圖紙編制而成。

18、according to electric package (mv) the tender and tender drawings.2）在充分研究工程的客觀情況和施工特點(diǎn)，結(jié)合我公司類似工程施工經(jīng)驗(yàn)的基礎(chǔ)上編制的。based on full study on construction characteristics and objective situation and combined with similar construction experience.3）在本方案編制過程中，嚴(yán)格執(zhí)行國家現(xiàn)行建筑和安裝工程施工及驗(yàn)收規(guī)范、規(guī)程、標(biāo)準(zhǔn)、設(shè)計(jì)規(guī)范。具體如下：in this compilat

19、ion process, strictly implement current national construction and installation construction, acceptance norms, procedures, standards, and design specifications. as follows:電氣裝置安裝工程電纜線路施工及驗(yàn)收規(guī)范 gb50168-2006 electrical installation cable construction and acceptance standards gb50168-2006 電氣裝置安裝工程接地裝置施工

20、及驗(yàn)收規(guī)范 gb50169-2006 electrical installation earthing construction and acceptance standard gb50169-2006 建筑電氣工程施工質(zhì)量驗(yàn)收規(guī)范 gb503032002 building electrical construction quality acceptance gb50303-2002三三 施工工藝流程：施工工藝流程：construction process前期準(zhǔn)備電纜直埋敷設(shè)施工鋪沙蓋磚回填土埋標(biāo)志樁掛標(biāo)志牌preparation cable buried pulling spread san

21、d and build bricks backfillbury sign stake hang signs 四四. 前期準(zhǔn)備前期準(zhǔn)備 preparation4.1 技術(shù)準(zhǔn)備技術(shù)準(zhǔn)備 technical preparation1） 針對本工程特點(diǎn)編審詳細(xì)的電纜溝施工作業(yè)指導(dǎo)書，及時(shí)組織圖紙會審。compile particular cable trench construction engineering guide book as per project characteristics and organize promptly drawings joint examination.2) 根據(jù)

22、上海市電力建設(shè)工程施工工藝實(shí)施細(xì)則結(jié)合本工程實(shí)際編寫電纜溝施工工藝卡，并組織實(shí)施。compile construction technique cards according to the shanghai municipal electric power construction engineering construction technology implementation details and organize its implementation.3) 施工人員全面了解電纜敷設(shè)來路、終點(diǎn)及敷設(shè)路徑。construction workers have comprehensive u

23、nderstanding antecedents, destination, and laying path of laying cables. 4.2 材料準(zhǔn)備材料準(zhǔn)備 material preparation1) 所有材料規(guī)格型號及電壓等級應(yīng)符合設(shè)計(jì)要求，并有產(chǎn)品合格證。all material specifications, models and voltage level should meet design requirements and have product certificates. 2) 每盤電纜上應(yīng)標(biāo)明電纜規(guī)格、型號、電壓等級、長度及出廠日期。電纜盤應(yīng)完好無損。each

24、 cable should be marked on specification, model, voltage level, length and manufacture date. cable tray should be in a good condition. 3) 電纜外觀完好無損，鎧裝無銹蝕、無機(jī)械損傷，光澤明亮無皺折和扭曲現(xiàn)象。電纜外皮及絕緣展無老化及裂紋。 the cable exterior condition is intact .the armor has no rust and no mechanical damage. it is shiny and bright w

25、ithout wrinkles and distortions. cable jacket and insulation show no aging and cracks.4) 電纜敷設(shè)前進(jìn)行絕緣搖測或耐壓試驗(yàn)。測量絕緣用兆歐表的額定電壓，采用如下等級：before laying carry out insulation rolling test or voltage withstand test. use megger rated voltage to measure insulation. take the following level:10kv 和 35kv 電纜：用 2500v 兆歐

26、表。10kv and 35kv cable: the 2500v megger.電纜測試完畢，應(yīng)立即用橡塑材料封頭。 when cable testing is completed, cover it with rubber materials immediately. 5) 按設(shè)計(jì)和實(shí)際路徑計(jì)算每根電纜的長度，合理安排每盤電纜，無電纜接頭。calculate each cable length according to design and actual path. arrange each cable reasonably without cable joints. 6) 電纜保護(hù)套管已經(jīng)

27、預(yù)埋好，故只需要清理管內(nèi)殘?jiān)⒆骱霉芸诒Ｗo(hù)。cable protection sleeve has been embedded. clean pipe residue and protect nozzles.7) 其它附屬材料：電纜標(biāo)示樁、電纜標(biāo)志牌、油漆、汽油、封鉛、硬脂酸、白布帶、橡皮包布、黑包布等均應(yīng)符合要求。other subsidiary material: cable marking piles, cable signs, paint, gasoline, sealed lead, stearic acid, white belt, rubber cloth, black clo

28、th etc. should meet the requirements. 4.3 主要機(jī)具準(zhǔn)備主要機(jī)具準(zhǔn)備 main equipment preparation卷揚(yáng)機(jī)、敷設(shè)電纜用支架及軸、電纜滾輪、轉(zhuǎn)向?qū)л?、吊鏈、滑輪、鋼絲繩、大麻繩、千斤頂。 winches, bracket and shaft for cable laying, cable roller, transfer guide wheel, hanging chain, pulleys, wire rope, large hemp rope, jacks. 絕緣搖表、皮尺、鋼鋸、電纜端接線工具、手錘、扳手、電氣焊工具、電工工具、

29、彎管機(jī)、砂輪機(jī)、電纜走向牌打印機(jī)、電纜號牌機(jī)、噴燈。insulation shake watch, measuring tape, hacksaw, cable-side wiring tools, hand hammers, wrenches, electric welding tools, electrical tools, bending machine, grinding wheel machine, printer, cable plate machine, blowtorch. 無線電對講機(jī)、手持?jǐn)U音喇叭。walkie-talkies, hand-held loud-speaker

30、szc 型兆歐表（檢測絕緣電阻用） 、高壓試驗(yàn)設(shè)備（交流耐壓及泄漏試驗(yàn)用）zc-type megger (insulation resistance test), and high-voltage test equipment (ac withstand voltage and leakage test) 4.4 作業(yè)環(huán)境準(zhǔn)備作業(yè)環(huán)境準(zhǔn)備 work environment preparation廠區(qū)電纜溝的開挖及過路管的預(yù)埋工作已經(jīng)完成，電纜溝內(nèi)無積水，其深度應(yīng)滿足規(guī)范要求，底砂鋪好，溝內(nèi)無雜物。trench excavation and crossing cable tubes embedd

31、ed have been completed. trench has no water and depth should meet the specifications. spread bottom sand and be debris-free.場地清理干凈、道路暢通。site clean up the roads unimpeded放電纜用的設(shè)備安置完畢，且符合安全要求，電纜沿線照明照度滿足施工要求。cable laying equipment has placed, and meets safety requirements. cable lighting illumination al

32、ong the route meets the construction requirements.五五. 敷設(shè)施工敷設(shè)施工 work of cable pulling5.1 電纜敷設(shè)施工工序電纜敷設(shè)施工工序 work procedure機(jī)具布置電纜展放電纜敷設(shè)、固定 equipment layout lay off cablelay cable and fix5.2 機(jī)具布置機(jī)具布置 layout of tools5.2.1 電纜的搬運(yùn)及支架架設(shè)電纜的搬運(yùn)及支架架設(shè) cable removal and cable tray 1) 電纜搬運(yùn)須用卡車或吊車運(yùn)輸。滾動時(shí)應(yīng)按電纜軸上箭頭指示方向滾動

33、。如無箭頭時(shí)，可按電纜纏繞方向滾動，切不可反纏繞方向滾運(yùn)，以免電纜松弛。use truck or crane to transport cables. roll cable-axis according to direction indicated by arrow sign on it. in long-distance transportation, use truck or crane to transport heavy cable trays. if without the arrow sign, roll it according to its wrapping direction

34、.2） 電纜支架的架設(shè)地點(diǎn)應(yīng)選好，以敷設(shè)方便為準(zhǔn)，一般應(yīng)在電纜起止點(diǎn)附近為宜。架設(shè)時(shí)，應(yīng)注意電纜軸的轉(zhuǎn)動方向，電纜引出端應(yīng)在電纜軸的上方。電纜放線架應(yīng)放置穩(wěn)妥，鋼軸的強(qiáng)度和長度應(yīng)與電纜盤重量和寬度相配合。敷設(shè)電纜的機(jī)具應(yīng)檢查并調(diào)試正常，電纜盤應(yīng)有可靠的制動措施。select a proper set-up place as per convenient to pave. generally place it near the start or end point of cable. be aware of rolling direction of cable axle, and keep pa

35、y-off-rack steady. cable rack should be placed securely, and the steel shaft intensity and length should match the cable tray weight and width. check and debug the cable laying and have reliable brake devices5.2.2 卷揚(yáng)機(jī)與滑輪的布置卷揚(yáng)機(jī)與滑輪的布置 winch and pulley arrangement在線路的另一端布置好卷揚(yáng)機(jī)，并準(zhǔn)備好滑輪，約 1.52m 布置一個(gè)平面滑輪，每

36、個(gè)轉(zhuǎn)角布置一個(gè)轉(zhuǎn)角滑輪，并每隔 2030m 安排一個(gè)工人看護(hù)。卷揚(yáng)機(jī)用地錨固定，轉(zhuǎn)角滑輪用鋼管固定，平面滑輪無需固定。arrange a winch and pulleys at the end of the line. arrange one planar pulley every 1.52m, a quarter block at each corner and a watch- out worker every20 30m .windlass is fixed with ground anchor corner and pulley with steel pipes; flat pull

37、eys do not need fixing.電纜架與卷揚(yáng)機(jī)布置見下圖： cable rack and winch arrangement see below: 35kv：10kv：5.3 電纜展放電纜展放 lay-off cable1) 電纜展放可用人力拉引或機(jī)械牽引。當(dāng)采用機(jī)械牽引時(shí)，用機(jī)械的最大牽引強(qiáng)度宜滿足下表的規(guī)定，其速度不宜超過 15m/min，且應(yīng)在牽引頭或鋼絲網(wǎng)套與牽引鋼纜之間裝設(shè)防捻器。 use manual or mechanical traction. when using mechanical traction, the maximum mechanical stren

38、gth should meet the requirements in table, its speed should not exceed 15m/min, and should install fortified twister between traction head or steel mesh sleeve and pulling steel cable. cable maximum traction strength (n/mm2)電纜最大牽引強(qiáng)度（n/mm2）牽引方式 traction牽引頭 traction head鋼絲網(wǎng)套 steel mesh sleeve 受力部位forc

39、e area銅芯lead core 鋁芯aluminum core鉛套lead sheath鋁套aluminum sheath塑料護(hù)套plastic sheath 允許牽引強(qiáng)度allowable traction strength704010407本次采用機(jī)械牽引，采用鋼絲網(wǎng)套直接塑料護(hù)套方式，按表計(jì)算允許最大牽引強(qiáng)度： the mechanical traction uses aluminum and plastic sheath. calculate allowable maximum traction strength: 35kv 電纜：300mm2的單芯電纜，其允許最大牽引強(qiáng)度：35k

40、v cable: 300mm2 single cable, the allowable maximum traction strength:f1=7*300=2100n10kv 電纜：95mm2的三芯鎧裝電纜，鉛套，其允許最大牽引強(qiáng)度：10kv cable: 95mm2 three-core armored cable, lead sheath, the allowable maximum traction strength:f2=10*95*3=2850n185mm2的三芯鎧裝電纜，鉛套，其允許最大牽引強(qiáng)度：185mm2 three-core armored cable, lead shea

41、th, the allowable maximum traction strength:f3=10*185*3=5550n2）牽引力和側(cè)壓力計(jì)算：traction and lateral pressure calculation:側(cè)壓力計(jì)算公式為：the calculating formula lateral pressure: p=t/r 式中：p 為側(cè)壓力（n/m） ；t 為牽引力（n） ；r 為彎曲半徑（m）where: p for lateral pressure (n / m); t for traction (n); r for the bend radius (m)水平直線牽引時(shí)

42、：horizontal straight line traction t=9.8wl式中： 為摩擦系數(shù)，在滾輪上牽引時(shí)取 0.10.2；where: is friction coefficient, wheel traction is 0.1 0.2 w 為電纜每米重量（kg/m） ；l 為電纜長度（m）w is cable per meter weight (kg / m); l is cable length (m) 實(shí)際施工中，考慮實(shí)際情況， 取 0.12，r1取 0.5m ,r2取 1.3m, r3取 1.5m the actual construction should consid

43、er actual circumstances, takes 0.12, r1 takes 0.5m, r2 takes 1.3m, r3 takes 1.5m 35kv w1=8900kg/m3*300*10-6m2*1m+1.5kg=4.17kg10kv w2=8900kg/m3*95*3*10-6m2*1m+1.5kg=4.04kgw3=8900kg/m3*185*3*10-6m2*1m+1.5kg=6.44kg 令 t1=f1=2100n，則 l1=2100/（9.8*0.12*4.17）=428mt2=f2=2850n，則 l2=2850/（9.8*0.12*4.04）=600mt3

44、=f3=5550n，則 l3=5550/（9.8*0.12*6.44）=733mp1=2100/0.5=4200n p2=2850/1.3=2192np3=5550/1.5=3700n 所以，采用塑料護(hù)套直接拉動電纜時(shí)，35kv 電纜每次允許拉 428m 電纜，其側(cè)壓力為4200n；10kv 95mm2的電纜每次允許拉 600m，其側(cè)壓力為 2192n；10kv 185mm2的電纜每次允許拉 733m，其側(cè)壓力為 3700n。therefore, pull the cable with plastic sheath. each time the allowable length of 35kv

45、 cable is 428m and its lateral pressure is 4200n; 10kv 95mm2 cable is 600m and 2192n and 10kv 185mm2 cable is 733m and 3700n.3）電纜展放時(shí)，電纜應(yīng)從盤的上端引出，不應(yīng)使電纜在地面摩擦拖拉。電纜上不得有鎧裝壓扁、電纜絞擰、護(hù)層折裂等未消除的機(jī)械損傷。pull cable from the upper plate to avoid friction on the ground. armored cable may not be crushed. do not have ca

46、ble twisted, retaining layer fracture and other not eliminated mechanical damage. 4）人員合理配備。每隔 2030m 有一個(gè)人來注意電纜拉動情況；在每過路管前后應(yīng)安排人員看護(hù)，同一過路管中第二根電纜開始穿管時(shí)，鋼絲繩與電纜連接處套上熱縮管；電纜轉(zhuǎn)角處有人看護(hù)，跟隨電纜頭行走人員通過對講機(jī)來指揮操作卷揚(yáng)機(jī)工作人員。reasonably arrange personnel. at intervals of 20 30m have persons to note cable pulling; around each c

47、rossing pipe arrange workers to watch and sheathe heat-shrinkable tube at the joint between the steel line and cable when the second cable threads in the same crossing tube. watch the cable corner, and worker along the head part of cable uses interphone to command the pulley operators.5） 每根電纜敷設(shè)好后，在電

48、纜兩端做好臨時(shí)標(biāo)示，以分清電纜回路及黃、綠、紅三相。make temporary signs at both ends of cables. identify cable loop and yellow, green, red phases.5.4 電纜敷設(shè)、固定電纜敷設(shè)、固定 cable laying and fixing 1）電纜彎曲半徑應(yīng)符合規(guī)范要求，在溝內(nèi)敷設(shè)應(yīng)有適當(dāng)?shù)纳咝螐潱娎|的兩端、中間接頭、穿管處、垂直位差處均應(yīng)留有適當(dāng)?shù)挠嘧儭able bend radius should meet specifications, and pull cable in the trench s

49、hould have appropriate snake-like bend. leave appropriate laying surplus at ends, middle joints, threading, vertical potentiometer etc.2）電纜之間，電纜與其它管道、道路、建筑物等之間平行和交叉時(shí)的最小凈距，應(yīng)滿足規(guī)范的要求。the minimum parallel and cross spacing between cables or between cables and other pipeline ,roads, buildings, etc. shoul

50、d meet the specification requirements. 3）電纜與現(xiàn)有電纜交叉時(shí)，滿足規(guī)范要求，保持足夠間距。crossovering the existing cables to meet the regulatory requirements and maintain adequate spacing.4）同一回路的三根單芯電纜用尼龍?jiān)鷰纷中屠υ?，捆扎間距不大于 1.5m。同一電纜溝內(nèi)敷設(shè)的不同回路的電纜中心間距為 20cm。three single-core cables of the same loop should be bundled a triangle

51、type with nylon belts with bundling spacing not more than 1.5m. the center spacing of different circuits in the same cable trench is 20cm. 5）冬季敷設(shè)電纜，溫度達(dá)不到規(guī)范要求時(shí)，應(yīng)將電纜提前加溫。in winter, when the temperature can not meet regulatory requirements, the cable should be heated in advance.6）電纜敷設(shè)應(yīng)設(shè)置聯(lián)絡(luò)指揮系統(tǒng)，宜以無線電對講機(jī)

52、聯(lián)絡(luò)，手持?jǐn)U音喇叭指揮。the cable laying should set command contact system, contact with radio walkie-talkie and hand-held loud-speakers.六六. 覆砂蓋磚覆砂蓋磚 spread sand and cover bricks1) 電纜敷設(shè)完畢，應(yīng)請建設(shè)單位、監(jiān)理及質(zhì)量監(jiān)督部門作隱蔽工程驗(yàn)收，作好記錄、簽字。ask construction unit, supervision and quality supervision departments accept concealed proj

53、ect, make records and do the signature. 2) 電纜上面與電纜下面一樣，覆蓋 10cm 砂土或軟土，然后用磚或電纜蓋板將電纜蓋好，覆蓋寬度應(yīng)超過電纜兩側(cè) 5cm。spread 10cm sand or soft soil above or below cable and cover with bricks or boards with width more than 5cm of both sides. 七七. 回填土回填土 backfill earth1) 直埋電纜回填土前，應(yīng)經(jīng)隱蔽工程驗(yàn)收合格。prior to buried cable backfil

54、l shall be accepted.2) 回填土應(yīng)及時(shí)并分層夯實(shí)。the backfill should be timely layered and compacted. 八八. 埋標(biāo)樁埋標(biāo)樁 burying stake電纜在拐彎、接頭、交叉，進(jìn)出建筑物等地段應(yīng)設(shè)明顯的方位標(biāo)樁。電纜直線段每隔 50-100m處應(yīng)加設(shè)間距適當(dāng)?shù)穆窂綐?biāo)樁。標(biāo)樁應(yīng)牢固，標(biāo)志應(yīng)清晰，標(biāo)樁露出地面以 15cm 為宜。set clear direction stake on cable turning, joints, cross, access to buildings and other sites. set a

55、ppropriate path stake at intervals of 50-100m. stake should be fixed with 15cm above the ground and signs should be clear.九九. 掛標(biāo)志牌掛標(biāo)志牌 hanging signs1) 標(biāo)志牌規(guī)格應(yīng)一致，并有防腐性能，掛裝應(yīng)牢固。the signs shall be the same size, have antiseptic properties, and mounted hanging shall be firmly.2) 標(biāo)志牌上應(yīng)注明電纜編號、規(guī)格、型號及電壓等級。the

56、 signs should indicate cable numbers, specifications, models and voltage level. 3) 直埋電纜進(jìn)出建筑物及電纜終端頭應(yīng)掛標(biāo)志牌。buried cable access to buildings and cable termination heads should hang signs.4)電纜標(biāo)志牌同時(shí)應(yīng)遵循業(yè)主標(biāo)準(zhǔn)。cable signs follow owner standard.十十. 質(zhì)量控制質(zhì)量控制 quality control10.1 主控項(xiàng)目主控項(xiàng)目 master items1) 電纜的耐壓試驗(yàn)結(jié)果

57、，泄漏電流和絕緣電阻必須符合施工規(guī)范規(guī)定。the cable voltage test results, leakage current and insulation resistance must comply with the provisions of the construction specifications. 檢驗(yàn)方法：檢查試驗(yàn)記錄。test method: check test records.2)電纜敷設(shè)必須符合以下規(guī)定：電纜嚴(yán)禁有絞擰、鎧裝壓扁、護(hù)層斷裂和表面嚴(yán)重劃傷等缺損，直埋敷設(shè)時(shí)，嚴(yán)禁在管道上面或下面平行敷設(shè)。the cable laying must meet th

58、e following requirements: strictly prohibit twist, armored squash, sheath fracture and severe lacerations and other surface defects. forbid parallel pipeline laying.檢驗(yàn)方法：觀察檢查和檢查隱蔽工程記錄。testing method: observe examination and check concealed work records10.2 一般項(xiàng)目一般項(xiàng)目 general items 1) 坐標(biāo)和標(biāo)高正確，排列整齊，標(biāo)志樁和

59、標(biāo)志牌設(shè)置準(zhǔn)確；防燃、隔熱和防腐要求的電纜保護(hù)措施完整。coordinate and elevation should be correct and arrange neatly. set up sign stake and signboard accurately; take protection flame proof, heat insulation and corrosion matures.2) 電纜的埋置深度應(yīng)符合下列要求：電纜表面距地面的距離不應(yīng)小于 0.8m，且電纜應(yīng)埋在凍土層以下。在電纜引入建筑物、與地下建筑物交叉及繞過地下建筑物處等受條件限制時(shí)，可淺埋，但應(yīng)采取保護(hù)措施。t

60、he depth of buried cables should meet the following requirements: the distance from cable surface to ground should be not less than 0.8m, and the cables should be buried below the permafrost. bury shallowly if being restricted by the condition to pass the building and bypass and crossover undergroun