金沙江河谷巧家段地下水化学特征
金沙江河谷巧家段地形切割强烈,最大相对高差可达2 719 m,水文地质条件差异大,河谷区内泉水出露众多。对河谷区内38组泉水水化学组分进行分析的结果表明：地下水化学类型较简单,主要为HCO3-Ca、HCO3-Ca·Mg、HCO3-Mg·Ca型;地下水溶解性总固体（TDS）浓度变化较大,总体上TDS浓度自河谷斜坡补给-径流区至谷底排泄区,具有逐步增高的趋势;孔隙水TDS浓度明显高于岩溶水;地下水宏量组分HCO3-、Ca2＋、Mg2＋、SO42-与TDS具有正相关关系。据水化学组分变化分析谷底第四系地层中出露大泉的形成条件,其为孔隙水与岩溶水相混合形成。...
Saved in:
| Published in | 中国岩溶 Vol. 36; no. 3; pp. 339 - 345 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
云南省地质环境监测院,昆明,650216%云南省地质调查院,昆明,650216
2017
|
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-4810 |
| DOI | 10.11932/karst20170307 |
Cover
| Summary: | 金沙江河谷巧家段地形切割强烈,最大相对高差可达2 719 m,水文地质条件差异大,河谷区内泉水出露众多。对河谷区内38组泉水水化学组分进行分析的结果表明：地下水化学类型较简单,主要为HCO3-Ca、HCO3-Ca·Mg、HCO3-Mg·Ca型;地下水溶解性总固体（TDS）浓度变化较大,总体上TDS浓度自河谷斜坡补给-径流区至谷底排泄区,具有逐步增高的趋势;孔隙水TDS浓度明显高于岩溶水;地下水宏量组分HCO3-、Ca2＋、Mg2＋、SO42-与TDS具有正相关关系。据水化学组分变化分析谷底第四系地层中出露大泉的形成条件,其为孔隙水与岩溶水相混合形成。 |
|---|---|
| Bibliography: | Qiaojia county; Jinshajiang river valley; groundwater; hydrochemical composition; spatial distribution The Qiaojia district in Jinshajiang river is about 15 km long,of which the cross section is topographically a trapezoidal valley with a relieved bottom and a maximum corrading depth up to 2,719 m.Along the valley karst aquifers develop well and Quaternary porous aquifers distribute at bottom of the valley.There are a number of springs appearing along the valley,which are main drinking water sources for the local residents.In order to better protect the valuable resources,in this research 38 representative springs in the area were selected for the study of groundwater hydrochemical characteristics.Water samples were collected at the end of the rainy season in November 2015 and the dry season period in April 2016,respectively.The samples were analyzed in Lab of Kunming Mineral Resources Monitoring and Testing Center,Ministry of Land and Resources.Sampling and analyzing of the water samples were carried out in a |
| ISSN: | 1001-4810 |
| DOI: | 10.11932/karst20170307 |