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倒虹吸管设计方案谁有？

倒虹吸管设计方案谁有？

浏览：53次 | 提问时间： 07-29 05:49

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5个答案

怪咖达人 07-29 05:50

当渠道与道路或河沟高程接近，处于平面交叉时，需要修一建筑物，使水从路面或河沟下穿过，此建筑物通常叫做倒虹吸。倒虹吸主要有竖井式。这种形式施工简便而且便于清除泥沙。倒虹吸有箱形和圆形两种。描述的是渠水通过倒虹吸的水流现象，当渠水从一端流入向下弯曲的倒虹吸时，必先灌满倒虹吸(从整个渠道水流来看，这时呈现出“留退”的状况)，尔后才能“后推前”地从另一端流出，水流通过建筑物，必将产生一个能量上的损失，因此，一定要使倒虹吸的进出口水面高程有一个必要的差值，使出口高程低于进口高程才行，出口低于进口(“地下”)，则水流将平顺地通过，否则，渠水就会因倒虹吸出口端过高(“地高”)，受倒虹吸控制而流不过去。

心陷深海 07-29 05:58

当渠道与道路或河沟高程接近，处于平面交叉时，需要修一建筑物，使水从路面或河沟下穿过，此建筑物通常叫做倒虹吸。倒虹吸主要有竖井式。这种形式施工简便而且便于清除泥沙。倒虹吸有箱形和圆形两种。物理上水往高处走的现象是一种水利工程的技巧

看你病要你命 07-29 06:06

倒虹吸管设计方案：进口渐变段长度L进

ぃ时光不懂我的痛 07-29 06:15

1.84m，出口渐变段长度L出

遇深海 07-29 06:23

2.76m，进口沉砂池长度1.86m，池内水深0.965m，出口消力池长1.84m，消力池后的护底长度为5m.倒虹吸管施工。采用预应力砼管，每段管节的重量大，这使得运输及安装难度都较大。具体施工方法可参照《农村水电站》所推荐的方法或用当地使用的其他方法进行。用*将管节运至倒虹吸管附近公路边，然后用临时架设的轻轨在木架上置预制管，木架在轻轨上用滚木移动，逐段移动轻轨，将倒虹管运到安装现场。该倒虹管采用柔性接头。安装时，用肥皂水作润滑剂，先将橡胶圈套入管尾端，然后用绞车把另一水管大头压进去。安装方法。将管吊上木垫架，管口端设置1m长的横木条各一根，然后用Φ10起重钢丝绳与木架、水管连接。经检查合格后，开动2.8kW电动机吊动5吨绞车。在水管旁有四人护送，并不断*换木架底部滚木。木架到达座垫后即可进行水管安装，安装用人字架或龙门架吊起水管(5吨手动葫芦起吊)缓慢放在座垫上，并用绞车将大头压进去。水管弯头连接方法。弯头采用薄钢板焊成，钢管做成承插式，与水管管口尺寸一样，用橡胶圈压紧。钢管在镇墩弯曲处仅作为内模，故外边应加受力钢筋并浇筑

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