洮儿河流域扇形地下水库调控模型构建

Construction of regulation model for sector groundwater reservoir in Taoerhe river basin

洮儿河流域洪水资源丰富但难以利用,其下游扇形地下水库是实现地表水、地下水资源联合配置的关键。为研究地下水库的调蓄功能,选择成熟的MODFLOW模块作为基础软件,经综合分析,洮儿河扇形地水文地质条件并合理确定分区参数和源汇项,构建了洮儿河扇形地下水库调控模型。识别与检验结果显示:所建立的数值计算模型能够真实反映洮儿河扇形地地下水动态变化特征,所建立的数学模型、边界条件、水文地质参数选取和源汇项处理是合理和可靠的。

The flood resources are abundant in Taoerhe river basin, but it is difficult to utilization. The key point of combined allocation of surface and ground water resources is sector groundwater reservoir in lower reaches of Taoerhe river. In order to study regulation function of groundwater reservoir, the mature MODFLOW module is selected as the basic software to build the regulation model of sector groundwater reservoir for Taoerhe river basin by analyzing comprehensively the hydrogeology condition of the submarine delta of Taoerhe river and determining reasonably the partition parameter and source and sink terms. The results show that the numerical calculation model could reflect the dynamic variation characteristics of groundwater in the submarine delta of Taoher river basin and the built mathematical model and the boundary condition and the selected hydrogeology parameter and the regulatived source and sink terms are rational and reliable.