水化学特征分析银川平原地下水的补给与排泄  

Hydrochemical Study to Identify the Recharge and Discharge of Groundwater in the Yinchuan Plain

作　　者：王凌芬[1] 胡伏生[2] 于艳青 王文霞[4] 

机构地区：[1]北京市勘察设计研究院有限公司,北京100038 [2]中国地质大学,北京100083 [3]宁夏地质工程勘察院,宁夏银川750011 [4]北京市地质工程勘察院,北京100048

出　　处：《地下水》2015年第1期6-8,共3页Ground water

基　　金：地震导致的含水层参数变化特征与机理(40930637);采矿扰动下含水层参数的尺度变化特征及尺度效应研究(41272269)

摘　　要：银川平原地处中国西北干旱气候区,平原的西部是贺兰山,由一系列正滑断层连接。平原的东部与黄河相连,紧邻鄂尔多斯平台。平原的南部与牛首山东北断裂带接壤。平原的底部是石炭纪,二叠纪或者奥陶系。根据地下水水化学特征分析,本文旨在确定银川平原地下水流系统,地下水化学类型从西到东变化,西部主要是HCO3-SO4型,中部为HCO3–Cl型,到东部逐渐过渡为Cl-SO4型,一直延伸到鄂尔多斯平台边缘。从南向北,南部主要是HCO3-SO4型,中部为HCO3-Cl和SO4-HCO3型,北部化学类型复杂,主要是SO4-HCO3和Cl-SO4型。The Yinchuan plain is located in the arid climate zone of NW China. The western margin of the plain is the Helan mountain connecting a series of normal slip faults. The eastern margin of the plain connects with the Yellow River and adjacents with the Ordos platform. The south of the plain is bordered by the EN fault of the Niushou mountain. The bottom of the plain is the Carboniferous,Permian,or Ordovician rocks. Based on the analysis of groundwater hydrochemical indicators,this study aims to identify the groundwater recharge and discharge in the Yinchuan plain,China. The hydrochemical types of the groundwater are HCO3– SO4 in the west,HCO3– Cl in the middle,and Cl – SO4 in the east. The hydrochemical types are HCO3– SO4 in the south,HCO3– Cl and SO4– HCO3 in the middle. The hydrochemical types are complex in the north,mainly SO4– HCO3 and Cl – SO4.

关 键 词：水化学 第四系沉积 地下水流动系统 

分 类 号：P641.12[天文地球—地质矿产勘探]