研究处于天然状态地区的地下水水化学特征对地下水污染调查分析具有重要意义。利用新疆汉水泉地区39 组地下水水样, 依据研究区水文地质条件, 运用舒卡列夫分类法和SPSS、MAPGI S 与Sur fer 等软件进行综合分析, 揭示地下水水化学组分在水平和垂直方向的演化规律。结果表明: 研究区共存在4 种水化学类型, 分别为 SO42 Na# Ca、SO4 # Cl2Na# Ca、Cl# SO42Na# Ca 和Cl2 Na; 潜水TDS 与K+ + Na+ 、Ca2+ 和Cl- 呈显著相关性, 承压 水TDS 与K+ + Na+ 和Cl- 呈显著相关性, 主要离子浓度的空间分布特征与TDS 近于一致; 汉水泉地区地下水化 学类型、TDS 与主要离子浓度存在明显的分带规律, 水化学特征的形成主要受溶滤作用、阳离子交换吸附作用、浓 缩作用与混合作用影响。

Study on the g ro undwater chemical char acteristics in natural state is o f g reat import ance fo r the investig atio n and anal2 y sis of g ro undwater co ntamination. In this paper, the statist ical analy sis method of Shukar lev classificatio n, and softw are of SPSS, MAPGIS, and Surfer wer e used to analy ze the ev olution character istics o f chemical components in the ho rizontal and ver2 tica l directio ns based o n the 39 g roundw ater samples collected fr om the H anshuiquan r egion in Xijiang and the hydro geo log ical co nditions in the area. T he r esults show ed that ( 1) there are four hy dr ochem ical ty pes including SO42Na# Ca, SO4 # Cl2Na# Ca, Cl# SO42Na# Ca, and Cl2Na; ( 2) TDS has signif icant cor relat ion w ith K+ + Na+ , Ca2+ , and Cl- in unconfined g ro undw ater while TDS has significant cor relation w ith K+ + Na+ and Cl- in co nfined gr oundw ater; ( 3) spatial distr ibution of the main io n co ncentrations is consistent w ith that of TDS; ( 4) T he TDS, main ion co ncentrations, and gr oundw ater hydro chemical types hav e apparent zonations; and ( 5) leaching, io n ex change, concentr at ion, and mix ing ar e the major pr ocesses to fo rm the gr ound2 w ater hy dr ochemica l ty pe.

新疆自治区地质勘查基金项目( S122 12XJ01) ; 新疆自治区地方公派出国留学成组配套项目/ 水资源高效利用0 ( XJDF201307) ; 新 疆自治区水文学及水资源重点学科基金( xjsw sz yzdxk20101202)