乾安县地下水位动态变化特征及成因分析

依据乾安县2006至2016年地下水位动态监测资料,分别选择潜水观测井和承压水观测井进行研究,总结出研究区潜水地下水位动态变化特征为降雨渗入-径流-蒸发型,承压水地下水位动态变化特征为越流-径流型、径流-开采型和开采型。潜水地下水位动态变化受气象等自然因素影响明显,承压水地下水位动态变化受开采人为因素影响明显。近十年来,研究区地下水位呈现整体下降,特别是在集中开采区,地下水位降幅最大。研究结果可为地下水资源合理开发利用提供科学依据。

Analysis on the characteristics and causes of dynamic changeof groundwater level in Qian an County

According to the dynamic monitoring data of groundwater level of Qian an County from 2006 to 2016,by studying the diving observation wells and confined water observation wells,we conclude that the dynamic characteristics of groundwater level in the study area are rainfall infiltration-runoff-evaporation,while the dynamic characteristics of groundwater level of confined water are overflow-runoff,runoff-mining and mining type.The dynamic change of groundwater level is obviously influenced by weather and other natural factors,and the dynamic change of groundwater level of confined water is obviously affected by human factors.In the past decade,the groundwater level in the study area has shown a general decline trend,especially in the concentrated exploitation area,with the largest decline.At last,the results can provide scientific basis for rational exploitation and utilization of groundwater resources.