山东省苍山县小阎庄铁矿矿区东部水文地质特征研究

Study on Hydrogeological Characteristics of Eastern Xiaoyanzhuang Iron Deposit in Cangshan County of Shandong Province

通过地球物理勘探、水文地质调查、钻孔和抽水试验,结合区域水文、气象、地质和水文地质等资料,求得了矿体上部盖层裂隙岩溶水水文地质参数,且对裂隙岩溶水水量进行了计算;以"大井法"为主对矿坑涌水量进行了预测,基本查明了矿区东部的水文地质特征;阐述自然条件下裂隙岩溶水对基岩裂隙水的补给微弱;当水动力条件发生改变时,易造成盖层裂隙岩溶水下渗溃入坑道,对下部矿体的开采将产生较大威胁。

Through geophysical, hydrogeological investigation, drilling and pumping tests, combining with regional hydrological, meteorological, geological and hydrogeological and other information, hydrogeological parameters of fracture - karst water in the upper part of the cover have been obtained, and karst water amount has been calculated as well. By using ＂big well method＂ , the mine water inflow has been predicated, and basic hydrogeological characteristics of eastern mining area have been identified. It is said that under natural conditions, discharge of fractured karst water to basic rock fissure water is weak; when hydrodynamic conditions changed, fractural karst water could easily lead into the tunnel collapse, and will produce a greater threat to the exploitation of the lower part of the ore body .