The southern area of Sijiaying Iron mine belongs to the domestic rare watery deposit .To understand the hydrographical geological condition of the Southern area is the key to determine the safe mining project and water control .The article use the method of combining groundwater dynamic monitoring with exploration data to analyze the hydrological geological conditions in mining area ,through the analysis of dynamic characteristics of water level of quaternary and the bedrock aquifer ,analyzing Separating Water ability of lower quaternary aquifuge ,the groundwater runoff ,channel ,aquifer recharge relationship and boundary conditions .then ,puting forward that the lower quaternary “skylight” and Xin River fracture is an important channel of mine water conduction .And in the light of Dajiazhuang mining ,putting forward some control suggestions .In addition ,the analysis methods is more targeted to some mine that is not conducted hydrogeological test .%司家营铁矿南区属国内少见的大水矿床，了解南区水文地质条件是确定安全采掘方案和防水治水的关键，本文利用地下水动态监测结合勘探资料的方法来分析矿区的水文地质条件，通过分析第四系和基岩含水层水位动态特征，分析了第四系下部隔水层隔水能力、地下水径流、通道、含水层补给关系和边界条件，提出第四系下部“天窗”和新河断裂是矿坑导水的重要通道，并针对大贾庄矿段开采提出防治建议。此外，此种分析方法对一些未进行过水文地质试验的矿区更具针对性。
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