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为了揭示石家庄地区地下水流场演变的驱动因素,基于近50年来地下水位、气候变化及开采量等相关数据,应用小波变换及模糊矩阵等研究方法,对地下水流场发生异变的主要动因及其特征进行了研究。结果表明:(1)地下水降落漏斗中心水位埋深及面积随Pe值(降水量与开采量比值)减小而增大,趋势基本符合幂函数关系,枯水年份Pe单位下降值的影响程度约是丰水年份的1.8倍和1.9倍;(2)地下水降落漏斗中心水位埋深及面积随着Re值(地下水补给量与开采量比值)增大以幂函数特征呈减小趋势;(3)上游山区水利工程的修建使下游平原区地表水体渗漏补给量减少49%,井灌回归补给量减少17%。利用该方法取得的研究成果与实际情况基本符合,可为区域地下水开发利用提供指导。
In order to reveal the driving factors for the evolution of groundwater flow in Shijiazhuang area, based on the data of groundwater level, climate change and production in the past 50 years, the main causes of the groundwater flow field mutation and its application to wavelet transform and fuzzy matrices Features were studied. The results show that: (1) The depth and area of water table at the center of groundwater fall funnel increase with the decrease of Pe value (the ratio of precipitation to production), and the trend basically accords with the power function. The influence degree of Pe falling value in dry year is about 1.8 times and 1.9 times higher than that in wet years; (2) The water depth and area of groundwater funnel center decreased with the increase of Re value (the ratio of groundwater recharge to production volume) to power function; (3) The construction of the upstream mountain water conservancy project reduced the seepage supply of surface water in the downstream plain area by 49% and the well recharge reduced by 17%. The research results obtained by this method are basically in line with the actual situation, which can provide guidance for the development and utilization of groundwater in the region.