不同排水模数计算方法在锦西灌区适用性分析

Suitability Analysis for Different Drainage Modulus Calculation Method in Jinxi Irrigation Area

排水模数作为工程排水标准的重要参数,对排水工程的安全运行具有重要意义,如何准确的计算排水模数则至关重要。目前,关于排水模数的计算方法有很多种,如何正确的计算排水模数对于排水工程有具有重要意义。文章以黑龙江锦溪灌区为研究对象,基于不同的排水标准,利用经验公式法和平均排除法分别计算了其排水模数,并对其结果进行对比分析。结果表明:排水模数值以3d为阈值,当设计排水天数为3d时,两种方法计算结果相等;当设计排水天数>3d时,用经验公式法求得的排水模数较大;当排水天数<3d时,用平均排除法求得的排水模数较大。在工程设计过程中,出于安全考虑,应取两者的较大值。

As an important parameter of project drainage standard,the drainage modulus is of great significance for safe operation of drainage projects,and correct calculation for drainage modulus is vital important. At present,there are many calculation methods about drainage modulus,so how to calculate correctly the drainage modulus is very meaningful for the drainage project. Taking the Jinxi irrigation area of Heilongjiang Province as the researched object,based on different drainage standard,this paper applied experience formula method and average exclusive method to calculate separately its drainage modulus and compare and analyze the results. The results show that the drainage modulus take three days as the threshold value,the calculation results of two methods are equal when the drainage modulus designed was three days; the drainage modulus obtained through experience formula method is more when more than three days; the drainage modulus obtained through average exclusive method is more when less than three days. For safety,the maximum value of both should be used during the process of project design.