聊城市东部岩溶地热田地下热水水化学特征及成因分析

通过对聊城市东部岩溶地热田的地下热水的化学成分、同位素及其水文地质特征的分析，对这一地区的地下热水的形成和演化过程进行了研究。结果显示地下热水的形成受区内深大断裂和基底构造的控制。本区地下热水的形成是在漫长的地质历史发展过程中各种自然因素综合作用的结果。δD和δ18O的关系及氚（T）值和水化学特征系数说明地下热水为近代大气降水入渗起源的中度或高度变质水，以40年前的古水占优势，新近入渗水的补给量较小。水化学成分的形成以溶滤、溶解作用为主，微量元素成分丰富，反映了地下水经过了漫长和复杂的径流及深循环过程。 

Analysis on hydro-chemical features and origin of the hot spring in karst geothermal field, east Liaocheng city

Based on the analysis of chemical composition, isotopes and hydro-geologic features of the hot spring in karst geothermal field, east Liaocheng city, the origin and evolution of the hot spring were studied in the paper. The results show that the formation of the hot spring is controlled by deep faults and basement structure. And it is the consequence of natural comprehensive function during a long geological history. The hot spring is moderate or high degree metamorphic water originated from the infiltrating modern meteoric water, among which forty-year old ancient water dominates, while the new water is less, which can be explained by the relationship between δD and δ18O and tritium (T) values and coefficient of hydro-chemical characteristics. The formation of hydrochemistry ingredient is primarily leaching and dissolving, and the trace element ingredient is rich, which reflect that the groundwater passed through a long and complex runoff process and deep cycle.