可地浸砂岩型铀矿床抽水试验方法对比及有关问题探讨

Comparison of pumping-out test methods at in-situ leachable sandstone-type uranium deposit and discussion on relevant problems

本文对新疆伊犁盆地库捷尔太铀矿床抽水试验及参数计算方法做了较为详细的对比分析 ,总结出适合于可地浸砂岩型铀矿床不同工作阶段求取含水层渗透系数的抽水试验方法 ;阐述了在自喷井中用扬水试验求取含水层渗透系数方法的可行性及其在实际应用时应注意的问题 ;提出利用流量固定不可调的深井泵进行变流量抽水以控制不同的降深 ,解决了多年来因空气压缩机性能所限难以进行长时间抽水的问题 ;并对抽水试验的延续时间、降深次数以及降深等参数提出了具体建议。

This paper makes a detailed comparison analysis on pumping out tests and calculation methods of relevant parameters at uranium deposit Kujieertai, Yili basin, Xinjiang, and summarizes the method of pumping out test for calculating the filtration coefficient of the aquifer, and expounds the feasibility of calculating the filtration coefficient of the aquifer using water raising test, as well as the problems which may appear in practice. The author also suggests to employ deep well pump to control the drawdown, and the specific parameters in pumping out tests such as the test time, and times of drawdown etc.