焦作矿区地下水中氢氧同位素分析

为确定焦作矿区地下水来源，系统采取并测定了各种水体（泉水、地表水、第四系水、砂岩水、太灰水和奥灰水）的氢氧同位素（δ 18 O，δ 2 H， 3 H）和常规水化学离子，得到了矿区浅层孔隙水和深层裂隙水δD-δ 18 O组成关系，对比分析地下水、地表水和泉水的δ 18 O，δ 2 H， 3 H及Cl - ，TDS特征.结果表明：矿区深层地下水主要接受山区岩溶水的侧向补给，补给高程及区域为海拔400~800 m的碳酸盐岩裸露区；当地降水为浅层地下水的主要补给来源；西部矿区地下水的70%来源于丹河水的泄漏；煤矿区地下水D漂移特征明显，形成机理是地下水与烃基和H2 S交换作用的结果。

The analysis of hydrogen and oxygen isotopes in the ground water of Jiaozuo mine area

To ascertain the sources of the ground water in the Jiaozuo mine area,measured the conventional water chemical ions and environment isotopes(δ18O,δ2H,3H) of various bodies of water(including spring water,surface water,Quaternary water,sandstone water,limestone water in Taiyuan formation outburst,Ordovician limestone water),obtained the component relationship of δD-δ18O in the shallow pore water and deep fissure water.By contrast with δ18O,δ2H,3H and Cl-,TDS in the groundwater and suface water as well as spring water,the study came to a conclusion:the deep ground water in the mine area mainly receives the lateral recharge from the karst water in bare carbonate rock area at altitude of 400～800 m,while the shallow ground water mainly takes the local rainfall as its recharge source,and 70% of the ground water in the west mine district comes from the leakage of Dan River.The D drift feature of the ground water in the mine area is clearly obvious,which is the result of exchange interaction among the ground water,alkyl and H2S.