基于MIKE 11模型的引江济淮工程涡河段动态水环境容量研究

发布时间：2018-07-07 16:00

  本文选题：MIKE + 模型　； 参考：《自然资源学报》2017年08期

【摘要】：为探索分析水体环境容量的动态特性,论文以引江济淮工程涡河段为例,首次提出MIKE 11模型结合稀释流量比m值法计算河流水环境容量。计算结果表明:1)基于MIKE 11模型的m值法计算环境容量来分析河流水体环境容量的动态特性是可行的,它综合了环境管理中的总量控制和质量控制思想。2)通过对参数的合理取值,可建立客观反映模拟河段水动力、水质时空演变规律的模型;MIKE 11模型综合考虑河床糙度、纵向扩散系数、综合衰减系数、地表储水层最大含水量、土壤或根区储水层最大含水量等因素,水深的绝对误差(Re)、确定性系数(R2)和Nash-Suttcliffe系数Ens分别为3.30%、0.990和0.984;流量的Re、R2和Ens分别为9.8%、0.969和0.997;义门大桥断面COD模拟误差为13.7%,氨氮模拟误差为14.7%。3)基于MIKE 11模型的m值法计算谯城区COD的月均环境容量为-220.48 g/s、氨氮的月均环境容量为-10.97 g/s;涡阳县COD的月均环境容量为-17.05 g/s、氨氮的月均环境容量为2.56 g/s;蒙城县COD的月均环境容量为30.58 g/s、氨氮的月均环境容量为4.47 g/s;怀远县COD的月均环境容量为176.59 g/s、氨氮的月均环境容量为10.67 g/s;与传统的一维模型计算值相比,计算精度更高。结论认为,此方法可为MIKE 11模型的应用拓宽新思路,为引江济淮工程中河流水体的动态水环境容量计算提供依据,为污染物在横断面均匀混合的非感潮河流水体的环境容量计算和流域水污染治理提供一种新的技术方法。
[Abstract]:In order to explore and analyze the dynamic characteristics of water environmental capacity, taking the vortex river section of Jiangjiang-Jiji-Huaihe River Project as an example, the Mike 11 model and the dilution flow ratio m method are proposed for the first time to calculate the river water environmental capacity. The results show that it is feasible to analyze the dynamic characteristics of the environmental capacity of rivers based on m-value method of MIKE11 model, which integrates the ideas of total quantity control and quality control in environmental management. It is possible to establish a model that objectively reflects the hydrodynamic force of the simulated reach and the temporal and spatial evolution law of water quality. The model of Mike 11 synthetically considers the roughness of the river bed, the longitudinal diffusion coefficient, the comprehensive attenuation coefficient, and the maximum water content of the surface water reservoir. Factors such as the maximum water content of soil or root reservoir, The absolute error (re), certainty coefficient (R2) and Nash-Suttcliffe coefficient Ens of water depth are 3.300.90 and 0.984, respectively; the remiR2 and Ens of discharge are 9.80.69 and 0.997, respectively; the error of simulating COD of section of Yimen Bridge is 13.7and the error of simulation of ammonia nitrogen is 14.7.3) the m value method based on MIKE11 model is used to calculate the error of simulating COD and ammonia nitrogen of Yimen Bridge. The average environmental capacity of COD in Qiaocheng District is -220.48 g / s, that of ammonia nitrogen is -10.97 g / s, that of COD in Guoyang County is -17.05 g / s, that of ammonia nitrogen is 2.56 g / s, that of COD in Mengcheng County is 30.58 g / s, and that of ammonia nitrogen is 30.58 g / s. The average environmental capacity of Huaiyuan County is 176.59 g / s, the average monthly environmental capacity of ammonia nitrogen is 10.67 g / s, which is compared with the traditional one-dimensional model. The accuracy of calculation is higher. The conclusion is that this method can broaden the new ideas for the application of MIKE11 model and provide the basis for the calculation of the dynamic water environment capacity of river water in Jiangjiang-Jiji-Huai project. It provides a new technical method for environmental capacity calculation and water pollution control of non-tidal river with uniform cross section mixing.
【作者单位】： 合肥工业大学资源与环境工程学院;安徽省环境科学研究院安徽省污水处理技术研究重点实验室;
【基金】：安徽省省级环保科研课题(2015-13)~~
【分类号】：X143;X26
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本文编号：2105477