根据李雅庄煤矿水文地质勘查成果，对矿区主要含水层地下水水化学特征进行分析，并利用环境同位素方法进行水体来源研究。结果表明李雅庄矿区各含水层地下水水质存在一定差异；石炭系太原组岩溶裂隙水水质类型单一，与二叠系裂隙水相比，阴离子SO42-含量明显降低偏低，阳离子Na＋含量则明显增高偏高；奥陶系峰峰组岩溶水水质变得相对复杂，并呈现出明显的水平分带性；奥陶系上?上马家沟组岩溶水，相对与峰峰组岩上马家沟组O2S 位于峰峰组之下，与峰峰组整合接触溶水而言相比，水质类型及阴、阳离子含量均有明显差异。环境同位素研究结果表明，水样δD、δ18O值偏离当地雨水线较远，说明太原组岩溶裂隙水及奥陶系岩溶水接受大气降水补给条件相对较差；水样氚浓度分析结果说明太原组岩溶裂隙水及奥陶系岩溶水不是未接受近年大气降水的补给，属于古水和新近入渗水以及二者混合水。

The groundwater chemistry of the major aquifers was analyzed and the environmental isotope method was used to study the water source in the Liyazhuang mining area based on the hydrogeological investigation results. The groundwater chemistry results showed that (1) there is a difference in groundwater quality between different aquifers in the mining area. The karst fissure water quality in the Taiyuan formation of Carboniferous system has only a single type, and it has lower concentration of SO42- and higher concentration of Na+ compared with the Permian fissure water; (2) the karst water quality in the Fengfeng formation of Ordovician system is relatively complex with the obvious horizontal zoning characteristics; and (3) the type of water quality and ion concentrations in the upper Majiagou formation of Ordovician system have significant differences from those in the Fengfeng formation. The environmental isotope analysis results showed that δD and δ18O deviate far away from the local precipitation line, which indicated that precipitation does not play an important role in recharging the karst fissure water in the Taiyuan formation and karst water in the Ordovician system. Instead, both types of water receive water from the ancient water and recent infiltration water and mixture of both based on the analysis of Tritium concentration.