青龙县某铁矿矿区水文地质特征分析及矿坑涌水量预测

Analysis on Hydrogeological Characteristics and Water Yield Prediction of Some Iron Mine in Qinglong County

从区域水文地质、矿区水文地质两方面分析了矿区的水文地质特征,确定该矿区水文地质条件为简单,主要含水层(带)为第四系含水层、基岩风化裂隙含水带、构造破碎裂隙含水带。通过对矿床充水因素和矿坑边界条件的分析,提出利用承压水完整井结合大井法的计算方法,预测矿坑涌水量为9 283.6 m3/d,为后续矿山露采转地下开采提供依据。

The paper analyzes the hydrogeological characteristics of mining area about two aspects, and confirms the hydro-geological condition simple. The main aquifers are quaternary aquifer, fissure water in bedrock and crush fissure water in tectonic zone. Through the analysis on the factors of deposit water filling and the mine boundary conditions , the paper proposes the calcu-lating method about combining fully penetrating well of confined water and big well method , and forecasts the water yield of mine is 9283. 6m3/d. The forecast results could provide basis for subsequent surface mining to underground mining.