深部岩溶矿井水化学特征及含水层水力联系研究  

Hydrochemistry characteristics and connection of aquifers in deep karst mine

作　　者：许开卿 乔伟[1] 李文平[1] 冯鲁顺 刘梦楠 程香港 XU Kaiqing;QIAO Wei;LI Wenping;FENG Lushun;LIU Mengnan;CHENG Xianggang(School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221116,China;Dongtan Coal Mine,Shandong Energy Group Yanzhou Coal Mining Company Limited,Jining 273512,China)

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116 [2]山东能源集团兖州煤业股份有限公司东滩煤矿,山东济宁273512

出　　处：《煤矿安全》2023年第8期150-160,共11页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(41772302)。

摘　　要：近年来,华北型煤矿区上组煤开采中受奥灰岩溶水影响的事件时有发生,威胁巨大,为此,以东滩煤矿为例,采用统计分析、Piper三线图、Gibbs图、氯碱指数等水化学研究方法对研究区地表水及各含水层进行了分析。结果显示:研究区地表及地下水整体偏碱性,水质受岩石风化作用影响为主,部分受到蒸发沉淀作用,大气降水对含水层的水化学性质影响很小;各含水层离子来源主要为硅酸盐、蒸发盐及碳酸盐风化及阳离子交换作用;东滩煤矿奥灰含水层与地表水、第四系、十四灰水力联系密切,侏罗系砂砾岩与3煤顶板砂岩含水层水力联系紧密;未来东滩煤矿开采过程中,一、三采区受奥灰影响较大,突水风险较高,十四采区次之,四采区受奥灰影响突水风险较低,需提前做好预防。In recent years,mine water inrush accidents occurred several times in North China type coalfield during the mining process of the upper group of coal,and possessed great threat.Taking Dongtan Coal Mine as an example,statistical analysis,Piper trilinear diagram,Gibbs diagram,Chlorine-alkali index were used to analyze the hydrochemistry of the surface water and aquifers.The results show that the surface and groundwater in the research area is generally alkaline,rock weathering process is the main factor influencing the water quality,secondly is evaporation and precipitation,the atmospheric precipitation has little impact.The ion sources of aquifers are mainly silicate,evaporite and carbonate weathering and cation exchange.It is inferred that the hydraulic connection among Ordovician aquifer,surface water,Quaternary and the 14th limestone aquifers is close,Jurassic sandstone aquifer and No.3 coal roof sandstone aquifer have certain hydraulic connection.It is predicted that in the future,the first and the third mining areas will be affected by Ordovician water greater,then the fourteenth mining area,and the affection for the fourth mining areas is low.More attention must be paid to prevention in advance.

关 键 词：地下水 水化学特征 水力联系 奥灰含水层 突水 

分 类 号：P741[天文地球—海洋科学]