淮北煤田邹庄煤矿太灰水水化学特征及成因分析  

Hydrochemical Characteristics and Genetic Analysis of Carboniferous Taiyuan Formation Limestone of Zouzhuang Coal Mine in Huaibei Coalfield

作　　者：闵宁 冯松宝 林曼利 MIN Ning;FENG Songbao;LIN Manli(School of Resources and Civil Engineering,Suzhou University,Suzhou 234000,China;National Coal Mine Water Disaster Prevention Engineering Technology Research Center,Suzhou 234000,China)

机构地区：[1]宿州学院资源与土木工程学院,安徽宿州234000 [2]国家煤矿水害防治工程技术研究中心,安徽宿州234000

出　　处：《宿州学院学报》2024年第3期46-50,共5页Journal of Suzhou University

基　　金：宿州学院重点项目(2020yzd09);宿州学院质量工程项目(szxy2021xskc06);宿州学院大学生科研立项(KYLXYBXM21-130)。

摘　　要：随着煤炭浅部资源逐渐枯竭,淮北煤田邹庄煤矿的煤炭开采正逐步向深部发展,导致深部地下水系统原有平衡被破坏。为保证安全开采,同时确保矿井涌突水发生后能快速识别突水水源,需对太灰水的水文地球化学特征进行系统研究。采用Gibbs图、离子比例系数、主成分分析等方法进行分析,探讨邹庄煤矿深部太灰含水层水文地球化学形成作用。结果表明:太灰水呈弱碱性,TDS变化范围为1520 mg/L~1674 mg/L,属微咸水,水化学类型为Na-HCO 3-Cl型;Gibbs图分析显示太灰水形成主要受岩石风化的影响;离子比例系数和主成分分析得出离子来源受控于溶滤溶解作用和阳离子交替吸附作用。以方解石溶解为主,还包括少量的岩盐溶解、石膏溶解及硫化物氧化溶解。在地下水径流过程中与围岩发生的阳离子交替吸附作用,其类型为地下水中Ca 2+交换围岩中Na+。With the gradual exhaustion of shallow coal resources,the coal mining of Zouzhuang Coal Mine in Huaibei Coalfield is gradually developing to the deep,and the original balance of the deep groundwater system is destroyed.The aquifer of Carboniferous Taiyuan formation limestone is located under the mining coal seam and is strongly influenced by mining.It also has different degrees of hydraulic connection with the underlying Ordovician karst groundwater.In order to ensure safe mining and ensure the rapid identification of water inrush sources after mine water inrush occurs,it is necessary to systematically study the hydrogeochemical characteristics of aquifer of Carboniferous Taiyuan formation limestone.Therefore,this paper takes the aquifer of Carboniferous Taiyuan formation limestone of Zouzhuang Coal Mine in Huaibei Coalfield as the research object,and uses mathematical statistics,Piper three-line diagram,Gibbs diagram,ion proportional coefficient,principal component analysis and other methods to discuss the hydrogeochemical formation process of the aquifer in the deep.The results showed that:The aquifer of Carboniferous Taiyuan formation limestone is weakly alkaline,and TDS ranges from 1520 mg/L to 1674 mg/L,belonging to brackish water.Its water chemical type is Na-HCO 3-Cl type;Gibbs diagram analysis showed that the formation of the aquifer is mainly affected by rock weathering;Ion proportional coefficient and principal component analysis showed that the main source of ions aquifer was mainly controlled by leaching and dissolution.It is mainly based on the dissolution of calcite,and also includes a small amount of salt dissolution,gypsum dissolution and sulfide oxidation dissolution.In the process of runoff of the aquifer,the alternating adsorption of cations with the surrounding rock occurs.The type is Ca 2+in aquifer exchanging Na+in rocks.

关 键 词：淮北煤田 太灰水 水文地球化学作用 离子比例系数 

分 类 号：P641[天文地球—地质矿产勘探]