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