祁南煤矿某采区新生界含水层与隔水层分布特征及其水力联系分析

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中图分类号：P641 文献标志码：A 文章编号：2095-2945（2025）19-0097-04

Abstract：Minewater，aprimaryconcernincoalresourceextraction，posesasignificantthreat toconstructionsafety.The coal-bearingstrataintheQinanminingareaarecoveredbyathickandlooselayerofCenozoicsedimentsstoringgroundwater. ThisstudyexploresthehydrogeologicalconditionsoftheCenozoiclooselayerinaspecificminingareaoftheQinancoalmine， focusingonthedepthanddistributionofancientiverchannelswithintheCenozoic.Utilizingregionalgeologicaldrilingdataand loginginformationanaalysisftelitholgyofCenozicsdimentsisonductedaquifes/aquitardsarecategorizedandtir hydraulicconnectionsarediscussed.TheinvestigationrevealsthepresenceoffouraquifersandthreeaquitardsintheCenozoic loselayer.Thefrstaquiferexhibitscharacteristicsofacompositepore-typegroundwatertoaweaklypresurizedaquiferwhile thelowerthreeaqifersareidentifiedaspressrizedaquifers.Ananalysisofhydraulicconnectionsidentifiesthewidespreadand stableditributionofthethirdaquifer，leadingtothelossofhydraulicconnectionsbetweetheupperaquiferandthefourth aquifer.Asaresult，theupperaquiferhasnodirectimpactonminerecovery.Waterfromthefourthaquiferinfitratesthemine throughfracture zones，establishing itas the primarysourceof waterdamage for shalowcoal mining under bedrock.

Keywords：Qinan coal mine; aquifer; aquitard; hydraulic connection; confined aquifer

煤炭是我国的重要基础能源，巨大的需求量也促使煤矿的开采规模与日俱增。（剩余4826字）