【正文】 quality supervision departments accept concealed project, 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，覆蓋寬度應超過電纜兩側(cè) 5cm。 L is cable length (m) 實際施工中，考慮實際情況，μ 取 ，R 1 取 ,R2 取 , R3 取 The actual construction should consider actual circumstances, μ takes , R1 takes , R2 takes , R3 takes 35KV W1=8900kg/m3*300*106m2*1m+=11 / 1410KV W2=8900kg/m3*95*3*106m2*1m+=W3=8900kg/m3*185*3*106m2*1m+= 令 T1=F1=2100N，則 L1=2100/（**）=428mT2=F2=2850N，則 L2=2850/（**）=600mT3=F3=5550N，則 L3=5550/（**）=733mP1=2100/=4200N P2=2850/=2192NP3=5550/=3700N 所以，采用塑料護套直接拉動電纜時，35KV 電纜每次允許拉 428m 電纜，其側(cè)壓力為4200N；10KV 95mm 2 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。Site clean up the roads unimpeded放電纜用的設備安置完畢，且符合安全要求，電纜沿線照明照度滿足施工要求。Construction workers have prehensive understanding antecedents, destination, and laying path of laying cables. 材料準備 Material Preparation1) 所有材料規(guī)格型號及電壓等級應符合設計要求，并有產(chǎn)品合格證。回路采用 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 three 35V outgoings from A472 substation. Of which: The first outgoing is led to B301S Building (35/10kV substation) the original one main transformer, pull the original one main transformer cable out, and connect to the adding 4 main transformer。具體如下：In this pilation 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收規(guī)范 GB501682022 》Electrical installation cable construction and acceptance standards GB501682022 《電氣裝置安裝工程接地裝置施工及驗收規(guī)范 GB501692022 》Electrical installation earthing construction and acceptance standard GB501692022 《建筑電氣工程施工質(zhì)量驗收規(guī)范 GB50303—2022 》Building Electrical Construction Quality Acceptance GB503032022三． 施工工藝流程：Construction Process前期準備→電纜直埋敷設施工→鋪沙蓋磚→回填土→埋標志樁→掛標志牌Preparation→ Cable buried pulling →spread sand and build bricks → backfill→bury sign stake→ hang signs 四. 前期準備 Preparation 技術(shù)準備 Technical Preparation1） 針對本工程特點編審詳細的電纜溝施工作業(yè)指導書，及時組織圖紙會審。Insulation shake watch, measuring tape, hacksaw, cableside 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、手持擴音喇叭。 Use manual or mechanical traction. When using mechanical traction, the maximum mechanical strength 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)10 / 14電纜最大牽引強度（ N/mm2）牽引方式 traction 牽引頭 traction head 鋼絲網(wǎng)套 steel mesh sleeve 受力部位force area銅芯lead core 鋁芯aluminum core鉛套lead sheath鋁套aluminum sheath塑料護套plastic sheath 允許牽引強度allowable traction strength70 40 10 40 7本次采用機械牽引，采用鋼絲網(wǎng)套直接塑料護套方式，按表計算允許最大牽引強度： The mechanical traction uses aluminum and plastic sheath. Calculate allowable maximum traction strength: 35KV 電纜：300mm 2 的單芯電纜，其允許最大牽引強度：35KV cable: 300mm2 single cable, the allowable maximum traction strength:F1=7*300=2100N10KV 電纜：95mm 2 的三芯鎧裝電纜，鉛套，其允許最大牽引強度：10KV cable: 95mm2 threecore armored cable, lead sheath, the allowable maximum traction strength:F2=10*95*3=2850N185mm2 的三芯鎧裝電纜，鉛套，其允許最大牽引強度：185mm2 threecore armored cable, lead sheath, the allowable maximum traction strength:F3=10*185*3=5550N2）牽引力和側(cè)壓力計算：Traction and lateral pressure calculation:側(cè)壓力計算公式為：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)。Three singlecore cables of the same loop should be bundled a triangle type with nylon belts with bundling spacing not more than . The center spacing of different circuits in the same cable trench is 20cm. 12 / 145）冬季敷設電纜，溫度達不到規(guī)范要求時，應將電纜提前加溫。The cable laying must meet the following requirements: Strictly prohibit twist, armored squash, sheath fracture and severe lacerations and other 13 / 14surface defects. Forbid parallel pipeline laying.檢驗方法：觀察檢查和檢查隱蔽工程記錄。 Self and mutual inspection records 2） 電纜工程分項質(zhì)量檢驗評定記錄。 There should be warning signs and maintenance on pedestrian area.5) 現(xiàn)場禁止吸煙，班前班中嚴禁飲酒。Testing method: observe examination and check concealed works records and coordinate diagram.十一. 成品保護 Finished Protection1) 直埋電纜施工不宜過早，一般在其它室外工程基本完工后進行，防止其它地下工程施工時損傷電纜。The signs shall be the same size, have antiseptic properties, and mounted hanging shall be firmly.2) 標志牌上應注明電纜編號、規(guī)格、型號及電壓等級。 Around each crossing pipe arrange workers to watch and sheathe heatshrinkable 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