采动影响下矿井突水水源Fisher判别与地下水补给关系反演  

Fisher discriminant analysis for coal mining inrush water source under mining-induced disturbance and inversion of groundwater recharge relation

作　　者：刘鑫[1] 陈陆望[1] 林曼利[2] 李思达[1] 

机构地区：[1]合肥工业大学资源与环境工程学院,安徽合肥230009 [2]宿州学院地球科学与工程学院,安徽宿州234000

出　　处：《水文地质工程地质》2013年第4期36-43,共8页Hydrogeology & Engineering Geology

基　　金：国家自然科学基金项目"深层地下水重金属元素地球化学演变及其对工程扰动的响应"(41173106);安徽省自然科学基金项目"矿区多含水层地下水系统水动力-水化学演化及其对开采扰动的响应"(1308085ME61)

摘　　要：为了揭示采动影响下矿井突水水源误判原因,进而推测地下水补给关系,收集了朱仙庄煤矿历年水化学资料,建立了突水水源的Fisher判别模型,并根据水样误判结果以及矿井地质与水文地质条件,反演分析了地下水补给关系。研究结果表明朱仙庄煤矿煤系砂岩裂隙含水层全部水样回判正确,含水层较为封闭,与其他含水层无水力联系;新生界第四含水层、侏罗系砾岩含水层与石炭系或奥陶系灰岩含水层部分水样误判,矿井采动影响下不同时期含水层间的地下水存在不同程度的水力联系,矿井新生界第四含水层水源对侏罗系砾岩含水层存在补给,石炭系或奥陶系灰岩水则通过矿井南部露水补给新生界第四含水层。地下水动力条件的变化验证了地下水补给关系。建立突水水源判别模型,分析回代误判原因,反演地下水补给关系,为正确认识矿井采动影响下地下水循环条件提出了新的研究手段。To reveal the cause of inaccurate discrimination of inrush water samples under mining-induced disturbance,and to speculate on the groundwater recharge relation,a Fisher discriminant model of inrush water source was established based on the past hydrochemical data from the Zhuxianzhuang coal mine.According to the results of inaccurate discrimination and its geological and hydrogeological conditions,the groundwater recharge relation was inversed.All water samples from the coal-bearing formation aquifer were correctly discriminated.It is concluded that the aquifer is relatively sealed and has little hydraulic connection with other aquifers.However,some water samples from the fourth aquifer of the Quaternary,the Jurassic conglomerate aquifer and the Carboniferous or Ordovician limestone aquifers were incorrectly discriminated,indicating that the aquifers have hydraulic connection to different degree in the process of coal mining.The inaccurate discrimination includes the recharge of the fourth aquifer of the Quaternary to the Jurassic conglomerate aquifer,and the recharge of the limestone aquifer to the fourth aquifer of the Quaternary through the south outcrop of the coal mine,which is validated by the dynamic condition of groundwater.A new research means is put forward by establishing discrimination model of inrush water source,analyzing the cause of inaccurate discrimination and inversing the groundwater recharge relation in order to understand exactly the cycle of groundwater under mining-induced disturbance in a coal mine.

关 键 词：FISHER判别 突水含水层 地下水补给关系 反演 朱仙庄煤矿 

分 类 号：P641[天文地球—地质矿产勘探]