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自来水给水管网的多环网平差计算方法,目前普扁采用水头平差法。水头平差法又有以安德列耶夫命名的平差法及以洛巴巧夫命名的平差法两种。这两种方法所根据理论均为:在管网定线管网中流量初步分配及管径确定前提下,保证各个环网按客段中水流的流动方向所得到的水头损失总和等于零及管网中各节点流进与流出的流量总和等于零。实践说明,对安德列耶夫法平差计算过程中存在着很大的经验性。洛巴巧夫法对较多环网计算工作量大。
The multi-ring network adjustment method for the tap water supply network is currently used by the Pu-Pan water level adjustment method. The water head adjustment method has two adjustment methods named after Andreev, and the adjustment method named after Lobachov. The two methods are based on the theory that under the premise of initial flow distribution and pipe diameter determination in the pipe network of the pipeline network, the total head loss resulting from the flow direction of the water flow in the passenger compartment is equal to zero and the pipe network is ensured. The sum of the traffic flowing into and out of each node is equal to zero. Practice shows that there is a great deal of experience in the calculation of the Andreyev method. Loba Coffman’s method has a large amount of work on the calculation of the ring network.