Hydrogeochemical Characteristics and Groundwater Inrush Source Identification for a Multi-aquifer System in a Coal Mine

作     者：ZHANG Haitao XU Guangquan CHEN Xiaoqing WEI Jian YU Shitao YANG Tingting 

作者机构：School of Earth and EnvironmentAnhui University of Science and TechnologyHuainanAnhui232001China Geological Survey DepartmentGubei Coal MineHuainan Mining GroupHuainanAnhui232001China 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2019年第93卷第6期

页      面：1922-1932页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0816[工学-测绘科学与技术] 

基　　金：financially supported by the National Natural Science Foundation of China (Grant No. 41572147) 

主　　题：water inrush source multi-aquifer hydrogeochemistry Fisher discrimination geothermal verification analysis coal mine 

摘      要：Correct identification of water inrush sources is particularly important to prevent and control mine water *** analysis,Fisher discriminant analysis,and geothermal verification analysis were used to identify and verify the water sources of the multi-aquifer groundwater system in Gubei coal mine,Anhui Province,North *** show that hydrochemical water types of the Cenozoic top aquifer included HCO3-Na+K-Ca,HCO3-Na+K-Mg and HCO3-Na+K,and this aquifer was easily distinguishable from other aquifers because of its low concentration of Na++K+and Cl-.The Cenozoic middle and bottom aquifers,the Permian fissure aquifer,and the Taiyuan and Ordovician limestone aquifers were mainly characterized by the Cl-Na+K and SO4-Cl-Na+K or HCO3-Cl-Na+K water types,and their hydrogeochemistries were ***,water sources could not be identified via hydrochemical *** model was established based on the hydrogeochemical characteristics,and its discrimination rate was 89.19%.Fisher discrimination results were improved by combining them with the geothermal analysis results,and this combination increased the identification rate to 97.3%and reasonably explained the reasons behind two water samples *** methods described herein are also applicable to other mines with similar geological and hydrogeological conditions in North China.