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排水管道的起始管段经常堵塞,因此人们对小流量污水管道淤积的原因进行了研究。谢果林以列宁格勒排水管网的不计算管段为例,证明了当其它条件相同时,只有增加自流管道的充满度,才能保证提高污水水流的输送能力。对这个问题进一步的研究,不但验证了谢果林的结论,而且还定出了排水管道起始管段的设计规定: V_(cp) h/d~(1/2)≥0.6 (1)式中V_(cp)——水流的平均流速,米/秒;h/d——管道充满度(应不小于0.3)。条件式(1)是“建筑物内部给水排水设计规范”“CH-30-76”对排水管道起
The initial pipe section of the drainage pipe is often blocked, so people have studied the causes of the siltation of the small-flow sewage pipe. Xie Guolin, taking the unaccounted pipe section of the Leningrad drainage network as an example, proved that when the other conditions are the same, only by increasing the fullness of the free-flowing pipe can the transport capacity of the sewage flow be guaranteed. Further research on this issue not only validated Xie Guolin’s conclusion, but also laid down the design rules for the starting section of the drainage pipeline: V_(cp) h/d~(1/2)≥0.6 (1) where V_ (cp)—The average flow rate of the water flow, m/s; h/d—the fullness of the pipe (should not be less than 0.3). The conditional formula (1) is the “Code for the Design of Internal Water Supply and Drainage of Buildings” “CH-30-76” from the Drainage Pipeline