郭艳, 桂和荣, 魏久传, 倪建明, 成荣发, 庞迎春, 张治, 洪荒, 胡满聪, 崔亚利, 梁展, 李俊, 陈家玉, 李晨. 注浆工程扰动下煤系砂岩含水层水岩作用机理——以桃园煤矿为例[J]. 煤田地质与勘探, 2021, 49(1): 232-240. DOI: 10.3969/j.issn.1001-1986.2021.01.025
引用本文: 郭艳, 桂和荣, 魏久传, 倪建明, 成荣发, 庞迎春, 张治, 洪荒, 胡满聪, 崔亚利, 梁展, 李俊, 陈家玉, 李晨. 注浆工程扰动下煤系砂岩含水层水岩作用机理——以桃园煤矿为例[J]. 煤田地质与勘探, 2021, 49(1): 232-240. DOI: 10.3969/j.issn.1001-1986.2021.01.025
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GUO Yan, GUI Herong, WEI Jiuchuan, NI Jianming, CHENG Rongfa, PANG Yingchun, ZHANG Zhi, HONG Huang, HU Mancong, CUI Yali, LIANG Zhan, LI Jun, CHEN Jiayu, LI Chen. Mechanism of water rock interaction in coal measure sandstone aquifer disturbed by grouting engineering: A case study of Taoyuan Coal Mine[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(1): 232-240. DOI: 10.3969/j.issn.1001-1986.2021.01.025
Citation: GUO Yan, GUI Herong, WEI Jiuchuan, NI Jianming, CHENG Rongfa, PANG Yingchun, ZHANG Zhi, HONG Huang, HU Mancong, CUI Yali, LIANG Zhan, LI Jun, CHEN Jiayu, LI Chen. Mechanism of water rock interaction in coal measure sandstone aquifer disturbed by grouting engineering: A case study of Taoyuan Coal Mine[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(1): 232-240. DOI: 10.3969/j.issn.1001-1986.2021.01.025
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注浆工程扰动下煤系砂岩含水层水岩作用机理——以桃园煤矿为例

Mechanism of water rock interaction in coal measure sandstone aquifer disturbed by grouting engineering: A case study of Taoyuan Coal Mine

    摘要
  • 摘要: 煤系砂岩裂隙水是煤矿重要的充水水源之一，以淮北煤田桃园煤矿二叠纪煤系为研究对象，在分析该矿水害注浆治理以来煤系水水化学特征的基础上，阐明了地下水水文地球化学作用机理及其控制因素。结果表明：注浆治理期间，煤系水中主要阳离子为Na+，主要阴离子为SO42-；阳离子质量浓度由大到小为Na+、Ca2+、Mg2+，阴离子质量浓度由大到小为SO42-、HCO3-、Cl-；通过Durov水化学图分析，注浆治理期间煤系水化学类型以Na-SO4和Na-HCO3为主；煤系水中存在黄铁矿氧化或碳酸盐、硫酸盐溶解作用，并伴随着一定程度的阳离子交换作用与脱硫酸作用，特别是在注浆治理工程实施期间，阳离子交换作用增强；大型突水、注浆治理防治水工程、地质构造背景及采矿活动等均不同程度地影响了煤系水水岩作用，且随注浆治理范围增大，影响程度增大。该研究成果对于煤矿涌（突）水水源识别及水害防治具有重要意义，为类似条件下的其他煤矿（区）在突水或注浆治理扰动下的地下水水文地球化学研究及应用提供参考。

     

    Abstract: Coal measure sandstone fissure water is one of the important water filling sources in coal mine. This paper takes the Permian coal measures in Taoyuan Coal Mine of Huaibei Coalfield as the research object. Based on the analysis of the water chemical characteristics of coal measures since the grouting treatment of water disaster in the mine, the mechanism of hydrogeochemical action of groundwater and its controlling factors were expounded. The results show that during the grouting treatment project, the main cation in coal measures water was Na+, and the main anion was SO42-; the relationship of cation mass concentration was Na+ > Ca2+ > Mg2+, and the correlation of anion mass concentration was SO42- > HCO3- > Cl-. Through the analysis of Durov hydrochemical diagram, the main hydrochemical types of coal measures during grouting treatment were Na-SO4 and Na-HCO3. There were oxidation of pyrite or dissolution of carbonate and sulfate in coal measures water, accompanied by a certain degree of cation alternate adsorption and desulfurization, especially during the implementation of grouting treatment project, the cation alternating adsorption was enhanced. Large scale water inrush, water prevention and control engineering by grouting, geological structure background and mining activities all affected the water-rock interaction of coal measures water in varying degrees, and the influence degree increased with the increase of grouting treatment scope.

     

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