Numerical modeling and water balance analysis of groundwater under conjunctive use of groundwater and surface water in Hetao Irrigation District
YANG Yang1, ZHU Yan1*, WU Jingwei1, YU Leshi2, YANG Jinzhong1
1.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, Hubei 430072, China; 2.Youxi County Government of Sanming, Fujian Province, Sanming, Fujian 365100, China
Abstract:A three-dimensional groundwater model of Hetao Irrigation District was established. Model parameters were calibrated and validated with datasets from 2006 to 2013. Then, the numerical model was applied to estimate the impacts of conjunctive use of groundwater and surface water under 9 water saving scenarios with 3 different irrigation quotas and 3 autumn irrigation frequencies. The simulating results indicate that the water table depth is 1.863-2.029 m in the whole district, which increases by 0.084-0.250 m compared with that before the conjunctive use of groundwater and surface water. The value of groundwater decline varies considerably in different conjunctive areas. The deepest water table depth is in Jiefangzha conjunctive area, which is 2.308-2.803 m. And the shallowest is 2.079-2.455 m in Yongji conjunctive area. The amouns of recharge and phreatic water evaporation decreases by 2.01×108-3.63×108 m3/a and 1.69×108-3.03×108 m3/a respectively.
杨洋, 朱焱*, 伍靖伟, 余乐时, 杨金忠. 河套灌区井渠结合地下水数值模拟及均衡分析[J]. 排灌机械工程学报, 2018, 36(8): 732-737.
YANG Yang, ZHU Yan*, WU Jingwei, YU Leshi, YANG Jinzhong. Numerical modeling and water balance analysis of groundwater under conjunctive use of groundwater and surface water in Hetao Irrigation District. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(8): 732-737.
[1]谢磊. 河北省井渠结合灌区节水改造及其对地下水位影响问题研究[D]. 天津: 天津大学, 2017.[2]李建承, 魏晓妹, 邓康婕. 基于地下水均衡的灌区合理渠井用水比例[J]. 排灌机械工程学报, 2015,33(3):260-266. LI Jiancheng, WEI Xiaomei, DENG Kangjie. Reasonable canal-to-well irrigation water quantity ratio in irrigation district based on groundwater balance[J]. Journal of drainage and irrigation machinery engineering, 2015,33(3):260-266.(in Chinese)[3]周维博. 人工神经网络理论在井渠结合灌区地下水动态预报中的应用[J]. 西北水资源与水工程, 2003,14(2):5-9. ZHOU Weibo. Application of artificial neural networks to groundwater level forecast for irrigation district with well and canal[J]. Northwest water resources & water engineering, 2003,14(2):5-9.(in Chinese)[4]XU Xu, HUANG Guanhua, QU Zhongyi, et al. Asses-sing the groundwater dynamics and impacts of water sa-ving in the Hetao irrigation district, Yellow River basin[J]. Agricultural water management, 2010,98(2):301-313.[5]王亚东. 河套灌区节水改造工程实施前后区域地下水位变化的分析[J]. 节水灌溉, 2002(3):15-17. WANG Yadong. Analysis on changes of groundwater table before and after water saving reconstruction in Hetao irrigation district[J]. Water saving irrigation, 2002(3):15-17.(in Chinese)[6]黄莹, 胡铁松, 范筱林. 河套灌区永济灌域地下水数值模拟[J]. 中国农村水利水电, 2010(2):79-83. HUANG Ying, HU Tiesong, FAN Xiaolin. Numerical simulation of groundwater in Yongji irrigation area in Hetao irrigation district[J]. China rural water and hydropower, 2010(2):79-83.(in Chinese)[7]白忠, 徐旭. 河套灌区解放闸灌域地下水数值模拟[J]. 节水灌溉, 2008(2):28-31. BAI Zhong, XU Xu. Numerical simulation of the groundwater and salt dynamics in Jiefangzha irrigation scheme of Hetao irrigation district[J]. Water saving irrigation, 2008(2):28-31.(in Chinese)[8]何彬, 赖斌, 毛威, 等. 基于GIS的河套灌区井渠结合分布区的确定方法[J]. 灌溉排水学报, 2016,35(2):7-12. HE Bin, LAI Bin, MAO Wei, et al. A distribution-determination method of conjunction use district with groundwater and surface water for Hetao irrigation district based on GIS[J]. Journal of irrigation an drainage, 2016,35(2):7-12.(in Chinese)[9]王璐瑶, 彭培艺, 郝培静, 等. 基于采补平衡的河套灌区井渠结合模式及节水潜力[J]. 中国农村水利水电, 2016(8):18-24. WANG Luyao, PENG Peiyi, HAO Peijing, et al. Well-canal conjunctive irrigation mode and potential of water-saving amount based on the balance of exploitation and supplement for Hetao irrigation district[J]. China rural water and hydropower, 2016(8):18-24.(in Chinese)