三山岛北部海域金矿区水文地质特征分析

通过开展水文地质测绘、水文地质钻探、钻孔综合水文测井及钻孔抽水试验,结合区域地质、水文和气象资料,基本查明了三山岛北部海域金矿区水文地质条件。区内主要含水岩层划分为第四系松散岩类孔隙含水层、花岗岩风化裂隙含水层和构造碎裂岩裂隙含水层,研究表明,矿坑充水直接因素为构造裂隙水,间接因素为风化裂隙水和第四系松散岩类孔隙水。采用比拟法、大井法和水平廊道法对矿坑涌水量进行了预测,除比拟法之外,其余2种方法是根据水文钻孔抽水试验结果计算的,抽水试验严格按照有关规范规程要求进行,试验数据可靠。矿坑涌水量预测结果显示:大井法和水平廊道法计算出的涌水量接近,而比拟法预测结果略微偏大,说明本次预测工作所采用方法和数据较为合理,间接证明渗透参数分析工作是合理的。

Hydrogeological Characteristics of Gold Deoposit in North Sea Area of Sanshandao

Based on the hydrogeological survey,hydrogeological drilling,borehole integrated hydrological logging, drilling and pumping tests,combined with regional geological,hydrological and meteorological data,the basic identification of hydrogeological conditions in the mining area was conducted.Mainly containing water rock layer in the area was divided to the Quaternary loose rock pore aquifer,granite weathering fracture aquifer and structural fracture rock cranny aquifer.Direct factors of the mine water filling is the structural fissure water and indirect factors are weathering fissure water and Quaternary pore water in loose rock.The analogy,big well method and horizontal corridor were used in mine water filling forecast.Except the analogy method which with larger result,the calculated results of big well method and horizontal corridor are very close,indicating that the method and data is reasonable in this work,also providing indirect proof that the infiltration parameters analysis is reasonable.