基于数值模拟分析绰尔河冲洪积扇区地下水流场变化特征

Analysis of Chaoer River alluvial area characteristics of groundwater flow based on numerical simulation technology

为了准确掌握由绰尔河流域向西辽河流域调水后,研究区扎赉特旗绰尔河河口冲洪积扇区的地下水环境影响问题,对研究区地下水流场变化进行模拟分析是十分必要的。根据研究区的水文地质条件,建立了概念模型,利用GMS软件建立研究区地下水数值模拟模型,经过边界概化、建模、调参等处理后,对河口湿地及冲洪积扇平原区的地下水流变化进行分析研究。结果显示,由于绰尔河河水来水量减小,绰尔河渗流量相应减少,通过对冲洪积扇区地下水流场变化的预测,地下水水位虽有下降,但对当地民井取水无明显影响。

In order to accurately grasp from the Chaoer River basin to the Liaohe River basin water diversion,groundwater environmental impact of the study area region Zhalaiteqi Chaoer River alluvial fan,the simulation analysis of the changing groundwater flow field in the study area is very necessary.According to the hydrogeological conditions,established the conceptual model,using GMS software to establish groundwater numerical simulation model in the study area,through the boundary,and generalized modeling,after processing,the changing groundwater flow of estuarine wetland and alluvial fan plain area rushed on analysis.The results show that,due to Chaoer River water amount is reduced,the Chaoer River seepage flow less,through the hedge diluvial sector groundwater flow field changes forecast,groundwater levels have fallen,but not significantly affect the Wells to the local people.