鄂尔多斯盐海子地下水水流系统划分——来自水化学方面的探讨  

Division of groundwater flow system of Yanhaizi in Erdos: From the aspect of hydrochemistry

作　　者：王冬[1,2] 侯光才[1] 赵振宏[1] 

机构地区：[1]中国地质调查局西安地质调查中心,西安710054 [2]吉林大学环境与资源学院,长春130021

出　　处：《干旱区资源与环境》2014年第12期122-127,共6页Journal of Arid Land Resources and Environment

基　　金：中国地质调查局国土资源调查项目<鄂尔多斯盆地内蒙古能源基地地下水勘查>(编号:1212010734002)资助

摘　　要：鄂尔多斯高原分布一套主要由白垩系构成的巨厚的、开放程度高的统一含水岩系,空间上水流连续,地下水以每一个排泄区为中心均形成一个完整的水流系统。水动力场、水化学场、温度场证据证明水流系统存在托斯多层水流模式,可划分为浅、中、深三种模式。文中选取盐海子地下水流系统,建立苏米图-盐海子水化学剖面,利用Piper三线图法、Packer分层取样技术,对浅、中、深循环系统中地下水水化学的空间分布特征和演化规律进行了研究分析,认为在三个循环系统中水化学特征均表现差异性,从水化学方面将地下水流系统划分为浅、中、深三种模式是可行的。The Erdos plateau has a gigantic thickness cretaceous aquifer with opening and interactive characters.It forms many multiple independent groundwater flow systems controlled by discharge points. The evidences from groundwater field dynamic,hydrochemical field and temperature field prove that the groundwater flow system is a typical ＂ Toth model＂,i. e. The groundwater system contains three systems： deep circulation system,the intermediate system and the shallow system. The research took the Yanhaizi groundwater flow system as the typical study area and set up the hydrochemical profile of Sumitu- Yanhaizi. The ratio coefficients of the main ions,the piper diagram and Packer sample system were used to gain the better understanding of the distributing character of hydrochemistry and the evolution laws of groundwater for deep circulation system,the intermediate system and the shallow system. The conclusion proved that there exist the hydrochemistry differences among the three flow system,and division of the three flow systems is practicable.

关 键 词：地下水流系统 水化学 鄂尔多斯盆地 

分 类 号：P641.12[天文地球—地质矿产勘探]