CAJ | 학술논문

利用环境同位素研究地下水年龄对区域地下水资源评价提供可靠依据。本文以陡河流域为例，通过采集大量地下水中的环境同位素样品，测试水中氚、CFCs和14C含量，分别计算地下水年龄，评价地下水的可更新能力。研究结果表明：Q4含水层受井孔利用情况平均滞留时间存在显著差异；Q3含水层地下水年龄最广，从70年以前的老水到新水不等；Q2含水层主要为生活供水和工业开采层，远离河岸带地下水年龄10~70年；远离河岸带Q1含水层地下水为冷湿气候下补给；灌区地下水浇灌过程中与大气接触发生空气-水平衡，使得CFCs不适合于灌区地下水年龄计算。
이용배경동위소연구지하수년령대구역지하수자원평개제공가고의거。본문이두하류역위례，통과채집대량지하수중적배경동위소양품，측시수중천、CFCs화14C함량，분별계산지하수년령，평개지하수적가경신능력。연구결과표명：Q4함수층수정공이용정황평균체류시간존재현저차이；Q3함수층지하수년령최엄，종70년이전적로수도신수불등；Q2함수층주요위생활공수화공업개채층，원리하안대지하수년령10~70년；원리하안대Q1함수층지하수위랭습기후하보급；관구지하수요관과정중여대기접촉발생공기-수평형，사득CFCs불괄합우관구지하수년령계산。
Groundwater age assessment with environmental isotopes could useful for local groundwater resources evaluation and management. Dou River Basin has been selected as the typical study area, amount of groundwater samples have been tested with 3H, CFCs and 14C, groundwater ages have been calculated. The results show that, groundwater ages changes obviously in Q4 aquifer with the impact of human activities;groundwater ages varied most widely in Q3, and the age distributed from old water 70 year ago to new water; as the main development aquifer, Q2 aquifer has the groundwater ages from 10 to 70 years;groundwater in Q1 aquifer recharged with pre-cipitation from cold and wet climate; because of the air-water equilibrium during the irrigation process, CFCs method is not suitable to calculate the groundwater age in irrigation area.