MODFLOW模型与地表水量调度系统联合运用研究

发布时间：2018-04-24 16:36

本文选题：MODFLOW模型 + 模拟计算　；参考：《西北农林科技大学学报(自然科学版)》2017年01期

【摘要】：【目的】对区域地表水、地下水及再生水进行联合调度,以充分发挥多水源水量、库容、水力及时空补偿作用。【方法】以位于陕西西咸新区的泾河新城为研究对象,利用GMS软件系统构建MODFLOW模型,与地表水量调度系统联合运用,采用再生水进行补偿供给,模拟计算泾河新城2020年各水源工程的供水量及在用水户之间的分配结果,并预测地下水位的动态变化。【结果】通过联合模拟可知,2020年泾河新城地下水、地表水及再生水供水量分别为1 640.02万、3 973.28万、380.18万m3/年,各用水户的供水保证率均达到77%以上,基本能够满足2020年的需水要求;泾河新城生活供水水源为地下水,长期开采会使开采井附近水位出现一定程度的下降,从模拟结果可以看出,2020年泾河新城地下水水位平均降深为2m左右。【结论】联合调度充分发挥了各水源的供水能力,在基本保证区域内原有用水户用水不受影响的前提下,为泾河新城的发展提供了一定的水量保证。从长远发展考虑,应该在减少区域地下水开采的同时寻找替代水源,并注重开源与节水并用、水源涵养与生态保护兼顾,使区域经济、水资源及生态环境能够和谐发展。
[Abstract]:[objective] to carry out joint regulation of regional surface water, groundwater and reclaimed water in order to give full play to the functions of multi-source water, reservoir capacity, hydraulic power and space-time compensation. [methods] the Jinghe New Town located in Xixian New area of Shaanxi Province was taken as the research object. The MODFLOW model is constructed by using GMS software system, which is used jointly with the surface water dispatching system. The reclaimed water is used to compensate the water supply, and the water supply of Jinghe Xincheng project in 2020 is simulated and calculated, and the distribution results among the water users are calculated. The dynamic change of groundwater level is predicted. [results] through the combined simulation, the groundwater, surface and reclaimed water supply of Jinghe Xincheng in 2020 is 1 6.4002 million ~ 3 9.7328 million and 3.8018 million m ~ 3 / year respectively, and the water supply guarantee rate of each water user is over 77%. It can basically meet the requirement of water demand in 2020; the source of daily water supply in Jinghe New City is groundwater, and long-term exploitation will cause the water level near the mining well to decline to a certain extent. From the simulation results, it can be seen that the average depth of groundwater level in Jinghe Xincheng in 2020 is about 2m. [conclusion] the combined operation has brought into full play the water supply capacity of various water sources, and on the premise of basically ensuring that the original water users in the area will not be affected, It provides a certain amount of water guarantee for the development of Jinghe New City. In view of the long-term development, we should find alternative water sources while reducing the exploitation of regional groundwater, and pay attention to the combination of open source and water saving, water conservation and ecological protection, so that regional economy, water resources and ecological environment can develop harmoniously.
【作者单位】：西安理工大学西北旱区生态水利工程国家重点实验室培育基地;
【基金】：国家自然科学基金项目(41471451,51479160)
【分类号】：TV213.4

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