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混凝土排管敷设有哪些要求谁说说？

混凝土排管敷设有哪些要求谁说说？

浏览：30次 | 提问时间： 08-06 11:05

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陌生又熟悉 08-06 11:05

1. 排管可使用陶土管、石棉水泥管或混凝土管等，管子内部必须光滑。　　2. 按需要的孔数将管子排成一定型式，排列管子的接头应错开，并用水泥浇成一整体；确定排管的孔数时，应考虑将来发展的需要，一般为2孔、4孔、6孔、9孔等几种型式。　　3. 排管孔径一般不应小于电缆外径的1.5倍。敷设电力电缆的排管，其孔径不应小于100mm；敷设控制电缆的排管，其孔径不应小于75mm。　　4. 埋入地下的排管顶部至地面的距离不应小于下列数值：在厂房内为200mm；在人行道下为500mm；在一般地区为700mm。　　5. 在直线距离超过100m的地点以及在排管转弯和分支处都应设置排管井坑（入孔），井坑深度不应小于1.8m，井坑直径不应小于0.7m，以便于敷设及检修。　　6. 排管通向井坑应有不小于0.1%的倾斜度，以便管内水流入井坑内。　　7. 在排管内敷设电缆时，可将电缆盘置于井坑口，用于线穿入排管孔眼中的钢丝绳把电缆拉入管孔内。为了防止电缆受损伤，排管口应套以光滑的喇叭口，井坑口应装设滑*，在电缆表面可撒以滑石粉或涂抹黄油，以减少摩擦。　　8. 敷设在排管内的电缆，可采用加强铅包但无铠装的*电缆或塑料护套电缆。希望我的回答能对你有帮助。

稚礼 08-06 11:14

一、满足最佳水力条件 1．给水管道布置应力求短而直。 2．为充分利用室外给水管网中的水压，给水引入管宣布设在用水量最大处或不允许间断供水处。 3．室内给水干管宜靠近用水量最大处或不允许间断供水处。二、满足维修及美观要求 1．管道应尽量沿墙、梁、柱直线敷设。 2．对美观要求较高的建筑物，给水管道可在管槽、管井、管沟及吊顶内暗设。 3．为便于检修，管井应每层设检修门。暗设在顶棚或管槽内的管道，在阀门处应留有检修门。 4．室内管道安装位置应有足够的空间以利拆换附件。

你是我看不懂的風景 08-06 11:23

应符合的规定如下：（1）：管孔数宜案发展预留适当备用。（2）：缆芯工作温度相差较大的电缆，应分别配置于适当间距的不同排管组。（3）：管部顶部土壤覆盖厚度不应小于0.5m（4）：管路应放置于整平夯实土层且有足以保持连续平直的垫块上，纵向排水坡度不应小于0.2%（5）：管路端口应有防止电缆破损的处理。（6）：管路纵向接口处的弯曲度，应符合牵引电缆时不致损伤的要求。

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