[关键词]
[摘要]
通过发展新安江模型中非饱和带、饱和含水层水量平衡计算及入渗补给、潜水蒸发、河流2地下水水量交换动 态模拟功能, 在对作物灌溉需水量的估算基础上, 利用河流流量和地下水埋深观测资料进行模型反演, 实现对灌溉 开采量的估算。在淮北平原沙颖河流域井灌区应用表明, 该方法不仅较好地模拟河川径流和地下水埋深动态变化, 而且较好地估算出灌溉开采量动态变化过程及其对地下水埋深的影响。地下水开采量估算及地下水位动态变化对 地下水控制管理具有重要价值。
[Key word]
[Abstract]
In this study, w e develo ped a "Xinanjing "model in balancing water sto rag e of both unsatur ated and satur ated zo nes, then quantified precipitation r echar ge, g ro undwater ev apo rtr anspir at ion, and exchange betw een r iver flow and g ro undwater flow. The model w as used to calibrate ir rigation amo unt in terms of both obser ved f low discharg e and depth to gr oundw ater ta2 ble, and estimated ir rig atio n demand of cro ps. The established metho d w as further applied in the ir rigated area of Shaying River Basin, o ne o f plain areas in H uhai River . The results indicated that our method not only w ell simulate river flow discharge and depth to groundw ater table, but also reliably estimate variation o f g roundwater withdrawal and its influence on changes of groundwater table. Estimation of groundwater withdrawal and variation of g roundwater level is very valuable for management of g roundwater r esources.
[中图分类号]
[基金项目]
国家自然科学基金重大项目( 51190091) ; 水利部公益性行业科研专项经费项目( 201301066; 201401027)