现代地质2017，Vol.31Issue(3)：629-636,8.
内蒙古杭锦旗气田区地下水化学特征及其形成机制
Hydrochemical Characteristics and Formation Mechanism of Groundwater from Gas Field in the Hangjinqi, Inner Mongolia
摘要
Abstract
The Piper and Gibbs diagrams and alkali index are used to analyze the chemical characteristics and the formation mechanism of shallow groundwater from gas field in the Hangjinqi,Inner Mongolia.In this study,our new results suggest that the groundwater has following key features.Shallow groundwater of the study area generally has high mineralization,alkaline,brackish and great hardness;the TDS and total hardness in wet season are greater than those of the dry season.The chemical composition of shallow groundwater from the study area has a certain spatial variability on a small scale and the major cation of shallow groundwater are Na +,Ca2 +;and anion is HCO3-with the major hydrochemical types of HCO3-Na,HCO3-Ca and SO4· Cl-Na.The chemical composition of shallow groundwater originates from aluminosilicate minerals,carbonate minerals,and evaporate minerals;in addition,there is a change in chemical composition of the wet season and dry season.The formation of hydrochemical characteristics of the groundwater in study area is given priority to the rock-weathering dissolution.关键词
地下水/水化学特征/形成作用/内蒙古杭锦旗Key words
groundwater/hydrochemical characteristic/formation/Hangjinqi, Inner Mongolia分类
天文与地球科学引用本文复制引用
吴初,武雄,钱程,朱阁..内蒙古杭锦旗气田区地下水化学特征及其形成机制[J].现代地质,2017,31(3):629-636,8.基金项目
国家自然科学基金项目(41572227) （41572227）
国土资源部公益性行业科研专项(201511056-3) （201511056-3）
中央高校基本科研业务费专项(2652015125). （2652015125）
