| 采动条件下沉积变质型铁矿床水化学特征及控制因素:以司家营铁矿南区为例 |
| |
| 引用本文： | 左文喆,任永强,杨豹,刘帅洲.采动条件下沉积变质型铁矿床水化学特征及控制因素:以司家营铁矿南区为例[J].地球科学,2020,45(4):1427-1438. |
| |
| 作者姓名： | 左文喆 任永强 杨豹 刘帅洲 |
| |
| 作者单位： | 华北理工大学矿业工程学院, 河北唐山 063009 |
| |
| 基金项目： | 河北省自然科学基金项目D2017209229 |
| |
| 摘 要： | 为了解沉积变质型铁矿床开采后矿区地下水化学特征的变化趋势，在充分掌握矿区含水系统划分和流动系统发育规律的基础上，通过对四含上、四含下、基岩含水层148个水样常规离子的相关性、水化学类型及公因子的分析，得出水化学类型分区和公因子得分等值线，将二者叠加，分析各含水层潜在的形成作用及其控制因素.研究结果表明，四含上以碳酸盐溶滤、污染、氧化作用为主；四含下以污染、溶滤、局部脱硫酸作用为主；基岩含水层以离子交换吸附、第四系水的混合、硅酸盐矿物的不全等溶解作用为主.除了背景因素外，矿山开采后的三维流场控制了基岩含水层的形成作用和原生水化学类型，影响了第四系含水层的局部形成作用，水化学类型分区界线明显移动.
|
| 关 键 词： | 沉积变质型铁矿床 常规离子 水化学形成作用 水化学类型 水文地质学 |
| 收稿时间： | 2019-05-13 |
Hydrochemistry Characteristics and Its Control Factors in Sedimentary Metamorphic Iron Deposit under Conditions of Mining: A Case Study of Southern Sijiaying Iron Mine Area |
| |
| Abstract: | In order to understand the hydrochemistry characterization variation tendency of the aquifer after the sedimentary metamorphic iron deposit mined, on the basis of the division of aquifer system and development law of the flow system in the mining area, through the analysis of relevance of conventional ions, hydrochemistry types and common factors on 148 groundwater samples collected from the Upper Quaternary aquifer, the Lower Quaternary aquifer and the bedrock aquifer, the hydrochemical type distribution and the isolines of common factors scores were obtained, then they were overlaid to analyze potential formation and controlling factors of the aquifers. The results show that Upper Quaternary aquifer is characterized by the carbonate dissolution, pollution and oxidation; the Lower Quaternary aquifer is characterized by the pollution, the carbonate dissolution and the local sulfate reduction; the bedrock aquifer is characterized by ion exchange adsorption, the mixing effect of the Quaternary aquifer and incongruent dissolution of silicate. In addition to background factors, three-dimensional flow field has controlled the formation and original hydrochemical types of the bedrock aquifers, and has affected the local formation of the Quaternary aquifer to make hydrochemical type boundary move significantly. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地球科学》浏览原始摘要信息 |
| 点击此处可从《地球科学》下载免费的PDF全文 |
|
