岩矿测试2025，Vol.44Issue(5)：895-910,16.DOI:10.15898/j.ykcs.202503260057
闭坑煤矿采空区矿井水中的挥发性有机物演化规律及影响因素
Evolution Patterns and Influencing Factors of Volatile Organic Compounds in Mine Water from Goaf of Closed Coal Mines
摘要
Abstract
Volatile organic compounds(VOCs)threaten the quality of coal mine water due to their release from coal-bearing strata into mine water during mining.Understanding VOC evolution in coal mine water is critical for groundwater protection in coal mines.This study examines VOC evolution in closed coal mine water at Xinjulong coal mine,Shandong Province,focusing on oxygen and coal content effects.Lab experiments tracked 52 VOCs(tested via purge-and-trap/GC-MS)alongside hydrochemical and genomic data.Results showed total VOCs peaked at 110d(3.199μg/L)before declining,with year-end reductions of 18.68％,19.53％,and 45.90％across groups,though toxic benzene/vinyl chloride emerged.In the water samples,VOCs initially underwent aerobic degradation,followed by predominantly anaerobic reduction.As a key electron acceptor,oxygen enhanced the degradation of chlorinated hydrocarbons,with the lowest concentrations of vinyl chloride and benzene observed under high dissolved oxygen conditions.Samples with higher coal content exhibited the lowest VOC concentrations but the highest diversity of benzene derivatives,suggesting that organic matter and clay minerals in coal contribute to VOC release through adsorption-desorption processes.Recommendations include staged redox control,adsorbents,and microbial additives for optimized coal mine water quality.The BRIEF REPORT is available for this paper at http://www.ykcs.ac.cn/en/article/doi/10.15898/j.ykcs.202503260057.关键词
闭坑煤矿/挥发性有机物/矿井水水质/氯代烃/吹扫捕集/气相色谱-质谱法Key words
closed coal mine/volatile organic compounds/coal mine water quality/chlorinated hydrocarbons/purge and trap/gas chromatography-mass spectrometry分类
资源环境引用本文复制引用
高雅婷,张莉,徐智敏,孙亚军,朱璐璐,郭娟..闭坑煤矿采空区矿井水中的挥发性有机物演化规律及影响因素[J].岩矿测试,2025,44(5):895-910,16.基金项目
国家自然科学基金项目"废弃矿井多重介质空间积水及对邻矿边界煤柱的侵蚀破坏机理"(42172272) （42172272）
国家重点研发计划项目"煤矿区场地地下水污染防控材料与技术"(2019YFC1805400) （2019YFC1805400）
