南水北调与水利科技Issue(5)：963-967,994,6.DOI:10.13476/j.cnki.nsbdqk.2015.05.030
良乡地热田地热水化学特征及同位素分析
Hydrochemical characteristics and isotope analysis of geothermal water in Liangxiang geothermal field
摘要
Abstract
According to the geothermal settings,hydrochemical data,and research on the isotopes ofδD,δ 1 8 O,3 H,1 4 C in geother-mal water in the Liangxiang geothermal field,the origin,metamorphism and evolution,and hydrological characteristics of iso-topes of geothermal water were investigated.The results suggested that (1)the hydrochemistry type of geothermal water in the Liangxiang geothermal field is mainly HCO3 ·SO4-Ca·Na·Mg,and the geothermal water contains mineral components with medical benefits,especially chlorine and metasilicic acid;(2)according to the analysis of ion concentrations,the geothermal wa-ter is lixiviated and belongs to initially metamorphic water;(3)the geothermal water is immature based on the water-rock bal-ance status;(4)the geothermal water is mainly formed by the mixing of geothermal heat source water and modern circulating water supply from the southwest of Beijing multiphase fault-subsidence;(5)the age of geothermal water is about 38 960±630 years based on the isotope analysis of 3 H and 1 4 C;and (6)the recharge elevation of the geothermal water is about 620 to 730 m according to the stable isotope calculations of oxygen and hydrogen,and the recharge source is the mountain area with relatively lower elevations in the southwest of Beijing.关键词
地热水/水化学特征/同位素/良乡地热田Key words
geothermal water/hydrochemical characteristics/isotope/Liangxiang geothermal field分类
地球科学引用本文复制引用
刘颖超,刘凯,孙颖,刘久荣,郭高轩..良乡地热田地热水化学特征及同位素分析[J].南水北调与水利科技,2015,(5):963-967,994,6.基金项目
中国地质调查局“全国地热资源调查评价-北京市地热资源现状调查评价与区划”项目(水[2013]01-029-006) （水[2013]01-029-006）
