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目 录一、工程概况2二、施工机械配置2三、用电负荷计算4四、施工现场用电布置52五、安全用电技术措施53六、电气防火措施55七、触电事故应急救援预案55八、给排水施工57九、施工现场临时用电、给排水平面布置图58一、工程概况1. 地理位置拟建中的万科金色半山花园项目位于南京市浦口区沿山大道南侧。整个场地北高南低高差在17米左右。总建筑面积约为15万平方米，包含01#-09#楼（11层）、10#-18#楼（6层）、20#楼样板房（2层）、综合楼（2层）、社区中心（2层）、幼儿园（2/3层）。工程名称：南京万科金色半山花园项目工程地点：本工程位于南京市浦口区沿山大道南侧主要用途：居住、商业、服务业主单位：南京筑浦置业有限公司设计单位：南京长江都市建筑设计股份有限公司监理单位：江苏省华厦工程项目管理有限公司施工单位：江苏省建工集团有限公司2. 埋地电缆电力线路根据“临电规范jgj46-2005”电缆直接埋地敷设的深度不应小于0.5m，井应在电缆紧邻上、下、左、右侧均匀敷设不小于50mm厚的细砂，然后覆盖砖或混凝土板等硬质保护层。3. 施工条件菊园新区b10地块西侧有甲方提供的两台630kva的箱式变压器作为配电室，一个位于一期北侧；另外一个位于二期南侧。箱式变压器底部离地距离约为0.8m，一次侧为10kv电源三相三线制供电，二次侧为三相五线制中性点直接接地，电压为0.4kv，整个工地分示范区、一期、二期进行建设，示范区先于一期、二期施工，一期和二期土方开挖间隔时间仅为90天。总工期为823天。二、施工机械配置本工程按基础、主体、装饰三大部分分析，在主体施工阶段属用电高峰。一期工程施工用电由北侧变压器供电，共计9栋6层和2栋11层；二期工程施工用电由南侧变压器供电，共计7栋11层和2栋2层。根据主体施工阶段来计算现场总用电量，用电高峰阶段施工机械见下表:三、用电负荷计算 1、现场勘探及初步设计: (1)本工程所在施工现场范围内无各种埋地管线。 (2)现场采用380v低压供电，设二配电总箱，内有计量设备，采用tn-s系统供电。(3)根据施工现场用电设备布置情况，采用导线埋地敷设，布置位置及线路走向参见临时配电系统图及现场平面图，采用三级配电，两极防护。 (4)按照jgj46-2005规定制定施工组织设计，接地电阻r4。 2、确定用电负荷: (1)塔式起重机(2台) kx = 0.85,cos = 0.6,tg = 1.333 pjs = kxpe = 0.85111 = 94.35kw qjs = pjstg = 94.351.333 = 125.769kvar (2)碘钨灯(4台) kx = 0.3,cos = 0.7,tg = 1.02 pjs = kxpe = 0.31.2 = 0.36kw qjs = pjstg = 0.361.02 = 0.367kvar (3)高压汞灯(3台) kx = 0.6,cos = 0.7,tg = 1.02 pjs = kxpe = 0.63 = 1.8kw qjs = pjstg = 1.81.02 = 1.836kvar (4)真空吸水泵(4台) kx = 0.75,cos = 0.8,tg = 0.75 pjs = kxpe = 0.7516 = 12kw qjs = pjstg = 120.75 = 9kvar (5)木工圆锯 kx = 0.65,cos = 0.6,tg = 1.333 pjs = kxpe = 0.653 = 1.95kw qjs = pjstg = 1.951.333 = 2.599kvar (6)交流电焊机(3台) kx = 0.5,cos = 0.4,tg = 2.291 pjs = kxpe = 0.570.2 = 35.1kw qjs = pjstg = 35.12.291 = 80.414kvar (7)钢筋弯曲机 kx = 0.65,cos = 0.7,tg = 1.02 pjs = kxpe = 0.653 = 1.95kw qjs = pjstg = 1.951.02 = 1.989kvar (8)钢筋切断机 kx = 0.65,cos = 0.7,tg = 1.02 pjs = kxpe = 0.657 = 4.55kw qjs = pjstg = 4.551.02 = 4.641kvar (9)插入式振动器(10台) kx = 0.3,cos = 0.7,tg = 1.02 pjs = kxpe = 0.311 = 3.3kw qjs = pjstg = 3.31.02 = 3.366kvar (10)载货电梯 kx = 0.85,cos = 0.6,tg = 1.333 pjs = kxpe = 0.857.5 = 6.375kw qjs = pjstg = 6.3751.333 = 8.498kvar (11)建筑施工外用电梯(2台) kx = 0.85,cos = 0.6,tg = 1.333 pjs = kxpe = 0.8522 = 18.7kw qjs = pjstg = 18.71.333 = 24.927kvar (12)塔式起重机(2台) kx = 0.85,cos = 0.6,tg = 1.333 pjs = kxpe = 0.85111 = 94.35kw qjs = pjstg = 94.351.333 = 125.769kvar (13)高压汞灯(3台) kx = 0.6,cos = 0.7,tg = 1.02 pjs = kxpe = 0.63 = 1.8kw qjs = pjstg = 1.81.02 = 1.836kvar (14)真空吸水泵(4台) kx = 0.75,cos = 0.8,tg = 0.75 pjs = kxpe = 0.7516 = 12kw qjs = pjstg = 120.75 = 9kvar (15)100m高扬程水泵(2台) kx = 0.75,cos = 0.8,tg = 0.75 pjs = kxpe = 0.7540 = 30kw qjs = pjstg = 300.75 = 22.5kvar (16)木工圆锯 kx = 0.65,cos = 0.6,tg = 1.333 pjs = kxpe = 0.653 = 1.95kw qjs = pjstg = 1.951.333 = 2.599kvar (17)交流电焊机(3台) kx = 0.5,cos = 0.4,tg = 2.291 pjs = kxpe = 0.570.2 = 35.1kw qjs = pjstg = 35.12.291 = 80.414kvar (18)钢筋切断机 kx = 0.65,cos = 0.7,tg = 1.02 pjs = kxpe = 0.655.5 = 3.575kw qjs = pjstg = 3.5751.02 = 3.647kvar (19)钢筋切断机 kx = 0.65,cos = 0.7,tg = 1.02 pjs = kxpe = 0.657 = 4.55kw qjs = pjstg = 4.551.02 = 4.641kvar (20)钢筋调直机 kx = 0.65,cos = 0.7,tg = 1.02 pjs = kxpe = 0.654 = 2.6kw qjs = pjstg = 2.61.02 = 2.652kvar (21)灰浆搅拌机(3台) kx = 0.5,cos = 0.55,tg = 1.518 pjs = kxpe = 0.56.6 = 3.3kw qjs = pjstg = 3.31.518 = 5.009kvar (22)载货电梯(6台) kx = 0.85,cos = 0.6,tg = 1.333 pjs = kxpe = 0.8545 = 38.25kw qjs = pjstg = 38.251.333 = 50.987kvar (23)插入式振动器(10台) kx = 0.3,cos = 0.7,tg = 1.02 pjs = kxpe = 0.311 = 3.3kw qjs = pjstg = 3.31.02 = 3.366kvar (24)碘钨灯(5台) kx = 0.3,cos = 0.7,tg = 1.02 pjs = kxpe = 0.31.5 = 0.45kw qjs = pjstg = 0.451.02 = 0.459kvar (25)甲方、总包办公室用电 kx = 0.6,cos = 0.7,tg = 1.02 pjs = kxpe = 0.680 = 48kw qjs = pjstg = 481.02 = 48.96kvar (26)碘钨灯(5台) kx = 0.3,cos = 0.7,tg = 1.02 pjs = kxpe = 0.31.5 = 0.45kw qjs = pjstg = 0.451.02 = 0.459kvar (27)高压汞灯(4台) kx = 0.6,cos = 0.7,tg = 1.02 pjs = kxpe = 0.64 = 2.4kw qjs = pjstg = 2.41.02 = 2.448kvar (28)真空吸水泵(3台) kx = 0.75,cos = 0.8,tg = 0.75 pjs = kxpe = 0.7512 = 9kw qjs = pjstg = 90.75 = 6.75kvar (29)木工圆锯 kx = 0.65,cos = 0.6,tg = 1.333 pjs = kxpe = 0.653 = 1.95kw qjs = pjstg = 1.951.333 = 2.599kvar (30)插入式振动器(8台) kx = 0.3,cos = 0.7,tg = 1.02 pjs = kxpe = 0.38.8 = 2.64kw qjs = pjstg = 2.641.02 = 2.693kvar (31)交流电焊机(3台) kx = 0.5,cos = 0.4,tg = 2.291 pjs = kxpe = 0.570.2 = 35.1kw qjs = pjstg = 35.12.291 = 80.414kvar (32)钢筋弯曲机 kx = 0.65,cos = 0.7,tg = 1.02 pjs = kxpe = 0.653 = 1.95kw qjs = pjstg = 1.951.02 = 1.989kvar (33)钢筋切断机 kx = 0.65,cos = 0.7,tg = 1.02 pjs = kxpe = 0.657 = 4.55kw qjs = pjstg = 4.551.02 = 4.641kvar (34)钢筋调直机 kx = 0.65,cos = 0.7,tg = 1.02 pjs = kxpe = 0.654 = 2.6kw qjs = pjstg = 2.61.02 = 2.652kvar (35)建筑施工外用电梯(5台) kx = 0.85,cos = 0.6,tg = 1.333 pjs = kxpe = 0.8555 = 46.75kw qjs = pjstg = 46.751.333 = 62.318kvar (36)塔式起重机(2台) kx = 0.85,cos = 0.6,tg = 1.333 pjs = kxpe = 0.85111 = 94.35kw qjs = pjstg = 94.351.333 = 125.769kvar (37)碘钨灯(4台) kx = 0.3,cos = 0.7,tg = 1.02 pjs = kxpe = 0.31.2 = 0.36kw qjs = pjstg = 0.361.02 = 0.367kvar (38)高压汞灯(3台) kx = 0.6,cos = 0.7,tg = 1.02 pjs = kxpe = 0.63 = 1.8kw qjs = pjstg = 1.81.02 = 1.836kvar (39)木工圆锯 kx = 0.65,cos = 0.6,tg = 1.333 pjs = kxpe = 0.653 = 1.95kw qjs = pjstg = 1.951.333 = 2.599kvar (40)交流电焊机(2台) kx = 0.5,cos = 0.4,tg = 2.291 pjs = kxpe = 0.518 = 9kw qjs = pjstg = 92.291 = 20.619kvar (41)钢筋弯曲机 kx = 0.65,cos = 0.7,tg = 1.02 pjs = kxpe = 0.653 = 1.95kw qjs = pjstg = 1.951.02 = 1.989kvar (42)钢筋切断机 kx = 0.65,cos = 0.7,tg = 1.02 pjs = kxpe = 0.657 = 4.55kw qjs = pjstg = 4.551.02 = 4.641kvar (43)灰浆搅拌机(3台) kx = 0.5,cos = 0.55,tg = 1.518 pjs = kxpe = 0.59 = 4.5kw qjs = pjstg = 4.51.518 = 6.831kvar (44)插入式振动器(5台) kx = 0.3,cos = 0.7,tg = 1.02 pjs = kxpe = 0.35.5 = 1.65kw qjs = pjstg = 1.651.02 = 1.683kvar (45)建筑施工外用电梯(2台) kx = 0.85,cos = 0.6,tg = 1.333 pjs = kxpe = 0.8522 = 18.7kw qjs = pjstg = 18.71.333 = 24.927kvar (46)塔式起重机(2台) kx = 0.85,cos = 0.6,tg = 1.333 pjs = kxpe = 0.85111 = 94.35kw qjs = pjstg = 94.351.333 = 125.769kvar (47)载货电梯 kx = 0.85,cos = 0.6,tg = 1.333 pjs = kxpe = 0.857.5 = 6.375kw qjs = pjstg = 6.3751.333 = 8.498kvar (48)职工生活区 kx = 0.8,cos = 0.7,tg = 1.02 pjs = kxpe = 0.850 = 40kw qjs = pjstg = 401.02 = 40.8kvar (49)总负荷计算 总的有功功率 pjs = kxpjs = 0.9846.585 = 761.927kw 总的无功功率 qjs = kxqjs = 0.91158.536 = 1042.682kvar 总的视在功率 sjs = (pjs2 + qjs2)1/2 = (761.9272+1042.6822)1/2 = 1291.402kva 总电流计算 ijs = sjs / (1.732 ue) = 1291.402 / (1.732 0.38) = 1962.14a 3、干线进线截面及进线开关 在选择前应对照平面图和系统图先由用电设备至开关箱计算，再由开关箱至分配箱计算，选择导线及开关设备。分配箱至开关箱，开关箱至用电设备的导线敷设采用铜橡皮绝缘导线空气明敷，室外架空铜导线按机械强度的最小截面为10mm2，由于这部分距离较短，因此不考虑电压降，只按安全载流量选择导线截面。 (1)1号干线上导线截面及分配箱、开关箱内电气设备选择 1)塔式起重机(2台)开关箱至塔式起重机(2台)导线截面及开关箱内电气设备选择（开关箱以下机械启动后需要系数取1）: a)计算电流 kx = 1,cos = 0.6 ijs = kxpe/(1.732uecos) = 155.5/(1.732 0.380.6) = 140.543a b)选择导线 选择bx-470 ，空气明敷时其安全载流量为285a，室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。 c)选择电气设备 由于开关控制2台机械，开关的电流为ir=140.5432(台数)= 281.086 a。 选择开关箱内开关为dz10-600/3，其脱扣器整定电流值为ir = 600a。 2)碘钨灯(4台)开关箱至碘钨灯(4台)导线截面及开关箱内电气设备选择（开关箱以下机械启动后需要系数取1）: a)计算电流 kx = 1,cos = 0.7 ijs = kxpe/(uecos) = 10.3/(0.220.7) = 1.948a b)选择导线 选择bx-410 ，空气明敷时其安全载流量为85a，室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。 c)选择电气设备 由于开关控制4台机械，开关的电流为ir=1.9484(台数)= 7.792 a。 选择开关箱内开关为dz5-20/3，其脱扣器整定电流值为ir = 20a。 3)高压汞灯(3台)开关箱至高压汞灯(3台)导线截面及开关箱内电气设备选择（开关箱以下机械启动后需要系数取1）: a)计算电流 kx = 1,cos = 0.7 ijs = kxpe/(uecos) = 11/(0.220.7) = 6.494a b)选择导线 选择bx-410 ，空气明敷时其安全载流量为85a，室外架空铜芯导线按机械强度的最小截面为10mm2，满足要求。 c)选择电气设备 由于开关控制3台机械，开关的电流为ir=6.4