卫宁灌区迎水桥水源地地下水均衡变化研究
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摘要
地下水是重要的生态因子,地下水的均衡状态往往影响着该区域生态系统的天然平衡。地下水均衡计算是区域地下水资源评价的重要环节,是对地下水各均衡要素的定量化研究。应用水均衡法与数值模拟法对卫宁灌区某水源地自然条件与开采条件下的地下水各均衡要素进行计算分析。两种方法互为论证,计算结果接近,表明其具有较好的可信度,可以为合理开采地下水提供科学依据。综合两种计算结果,水源地在开采条件下,地下水补给项与排泄项各要素的量与其所占比例均发生了很大的变化,同时水源地地下水在自然条件下的正均衡变为开采条件下的负均衡,说明人工开采地下水是影响水源地地下水天然均衡状态的重要因素,应提出相应措施保障区域的供水安全。
Groundwater is an important ecological factor. The equilibrium state of groundwater often affects the natural balance of the regional ecosystem. Groundwater equilibrium calculation is an important part of regional groundwater resources evaluation and a quantitative study of groundwater equilibrium elements. Equipped with the water equilibrium method and numerical simulation method, this paper calculates and analyzes groundwater equilibrium elements under the natural and mining conditions of a certain water head site in Weining Irrigation District. The two methods support each other and the results are close, which shows that they have a good reliability and can provide scientific basis for reasonable groundwater exploitation. Based on the calculation results of the two methods, the quantity and the proportion of each element of groundwater recharge and discharge have changed greatly under the condition of exploitation. At the same time, the positive equilibrium of groundwater source has changed into the negative one, showing that artificial mining of groundwater is an important factor affecting the natural equilibrium of groundwater, and corresponding measures should be put forward to ensure the safety of regional water supply.
Groundwater is an important ecological factor. The equilibrium state of groundwater often affects the natural balance of the regional ecosystem. Groundwater equilibrium calculation is an important part of regional groundwater resources evaluation and a quantitative study of groundwater equilibrium elements. Equipped with the water equilibrium method and numerical simulation method, this paper calculates and analyzes groundwater equilibrium elements under the natural and mining conditions of a certain water head site in Weining Irrigation District. The two methods support each other and the results are close, which shows that they have a good reliability and can provide scientific basis for reasonable groundwater exploitation. Based on the calculation results of the two methods, the quantity and the proportion of each element of groundwater recharge and discharge have changed greatly under the condition of exploitation. At the same time, the positive equilibrium of groundwater source has changed into the negative one, showing that artificial mining of groundwater is an important factor affecting the natural equilibrium of groundwater, and corresponding measures should be put forward to ensure the safety of regional water supply.
引文
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[8] 王帅兵,张雪蕾,李常斌,等.基于Visual MODFLOW的武威盆地地下水动态模拟及预测[J].兰州大学学报(自然科学版),2015,51(2):159-165.
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[11] 刘清山,薛忠歧,孙永亮,等.基于GMS的银川市地下水数值模拟[J].宁夏工程技术,2013,12(3):193-197.
[12] 李金柱.潜水蒸发系数综合分析[J].地下水,2008,(6):27-30,83.
[2] 要永在.利用水均衡法进行地下水资源评价的方法探究[J].内蒙古水利,2012,(5):38-40.
[3] 陆垂裕,孙青言,李慧,等.基于水循环模拟的干旱半干旱地区地下水补给评价[J].水利学报,2014,45(6):701-711.
[4] 李晓英,顾文钰.水均衡法在区域地下水资源量评价中的应用研究[J].水资源与水工程学报,2014,25(1):87-90.
[5] Izady A,Abdalla O A,Joodavi A,et al.Groundwater Modeling and Sustainability of a Transboundary Hardrock-Alluvium Aquifer in North Oman Mountains[J].Water,2017,9(3):161.
[6] 吴文强,李文文,刘君利.水均衡与数值模拟法在地下水资源评价中对比应用[J].中国农村水利水电,2009,(6):45-48.
[7] 黄婧,张维江.宁夏清水河上游平原地下水均衡分析[J].农业科学研究,2013,34(2):15-20.
[8] 王帅兵,张雪蕾,李常斌,等.基于Visual MODFLOW的武威盆地地下水动态模拟及预测[J].兰州大学学报(自然科学版),2015,51(2):159-165.
[9] 吕昌斌,王丹.鸡西市区地下水资源调查与评价[J].黑龙江水利科技,2010,38(2):169-171.
[10] 魏礼宁,马如国.宁夏回族自治区水资源调查评价[M].宁夏:宁夏人民出版社,2005:50-56.
[11] 刘清山,薛忠歧,孙永亮,等.基于GMS的银川市地下水数值模拟[J].宁夏工程技术,2013,12(3):193-197.
[12] 李金柱.潜水蒸发系数综合分析[J].地下水,2008,(6):27-30,83.