黑龙江庆安—铁力地区水文地球化学特征与砂岩型铀矿成矿预测

Study on Hydrogeochemistry Characteristic and Prediction of Uranium Mineralization in Qingan-Tieli Area in Heilongjiang Province

水文地球化学研究和模拟计算的结果表明,庆安铁力地区地下水起源于大气降水,地下水水文地质单元具有完整的补给、径流、排泄体系,地下水的水化学特征揭示了地下水经历了由氧化环境向还原环境的变迁过程,铀矿成矿直接指示铀、氡异常集中分布向阳山区段,饱和指数(SI)和临界值Eh等参数的计算显示了有利于铀成矿的条件和环境。

By hydrogeochenmistry investigating, this paper concludes that there are some advantageous conditions cause the formation of uranium mine perspective area of Xiangyangshan.Major reason as follow: firstly, the study of hydrogen and oxygen stable isotopes suggests that the ground water of Qingan\|Tieli area origin from meteoric water.Secondly,it is a whole system of supply,flow and drainage in the hydrogeology unit in Qingan\|Tieli area.Thirdly, the chemistrical features of groundwater reveals that groundwater experienced the transformation from oxidation environment to deoxidize environment.At last, direct index of radioactivitical abnormity of uranium mine centralize distribute in area of Xiangyangshan, saturation index and critical Eh in groundwater show that the condition of uranium mine. 