论文部分内容阅读
为提高数学模型的精度,增进对傍河地下水水源地的认识,减小因模型参数的不确定性带来的误差,需要对数学模型的参数进行灵敏度分析。研究区以辽宁省北票市某傍河水源地为例,在分析水文地质条件基础上,建立相应的数学模型,并选取含水层的给水度、渗透系数、河床沉积物渗透系数、降雨入渗系数、模型边界的水力传导系数进行灵敏度分析。结果表明,模型对含水层的给水度和模型边界的水力传导系数比较敏感,从而为傍河水源地的水文地质勘察工作布置提供科学依据,进而提高地下水资源评价结果的精度。
In order to improve the accuracy of the mathematical model, enhance the understanding of the groundwater sources in the riverside and reduce the errors caused by the uncertainty of the model parameters, the sensitivity of the mathematical model parameters needs to be analyzed. Based on the analysis of hydrogeological conditions in the study area, a water source near a Beijiao River in Beipiao, Liaoning Province, corresponding mathematical models were established and the effects of water infiltration, permeability coefficient, sediment permeability coefficient, rainfall infiltration Coefficient, model boundary of the hydraulic conductivity sensitivity analysis. The results show that the model is sensitive to the water supply of the aquifer and the hydraulic conductivity of the boundary of the model, so as to provide a scientific basis for the hydrogeological exploration work arrangement in the water areas near the wellbeing. Therefore, the accuracy of the groundwater resources assessment results is improved.