Analyzing and differentiating borehole groundwater types constitute an effective way to scientifically evaluate the quality of water level observations, the injection or withdrawal mechanism of earthquake groundwater, and the selection of observation well sites that can further improve the effectiveness of earthquake and groundwater monitoring. Using data from digital water levels and air pressure values from six wells in southern Ningxia and the adjacent region, we analyzed the water–rock equilibrium state of each well and identified and evaluated the groundwater types in the aquifer system by combining the measurement results of water samples collected from each well in recent years. In addition, we analyzed groundwater formation as well as the migration and recharge characteristics of these six wells. This study presents methods necessary for the comprehensive evaluation of groundwater types.

中文翻译：

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地震观测井地下水类型评价及成因与补给关系

分析区分钻孔地下水类型是科学评价水位观测质量、地震地下水注入或抽取机制、观测井位选择的有效途径，可以进一步提高地震和地下水监测的有效性。利用宁夏南部及邻近地区6口井的数字水位和气压值数据，分析各井水岩平衡状态，结合水位测量结果识别和评价含水层系统地下水类型。近年来从每口井采集的样品。此外，我们还分析了这六口井的地下水形成以及运移和补给特征。