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有色金属(冶炼部分):2021,(10):50-57
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内蒙古巴彦乌拉铀矿地浸采区地下水示踪试验
何挺1, 刘金辉1, 阳奕汉2, 姚关怀2, 邢拥国3, 胡鹏飞2, 王如意2, 梁大业2, 王晓伟2, 张峰2
(1.东华理工大学;2.中核内蒙古矿业有限公司;3.中核矿业科技有限公司)
Tracer Test of Groundwater in In-situ Leaching Area of Bayanwula Uranium Mine in Inner Mongolia
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投稿时间:2021-06-02    修订日期:2021-06-06
中文摘要: 酸法地浸采铀是砂岩型铀矿最常用的开采方式之一,地浸中由于高酸溶浸液注入于地下含矿层,往往因化学沉淀堵塞导致含矿层渗透性下降,降低浸铀效率。为此,十分有必要探讨地浸过程中地下水(溶浸液)流速变化特征。以巴彦乌拉铀矿C10采区试验单元为试验场所开展了地下水示踪试验。试验结果表明,溶浸液从注液孔到抽液孔有多条(至少二条)渗流通道,较快通道的溶浸液流速为1.95~2.06 m/d,较慢通道溶浸液流速为1.35~1.44 m/d。KI示踪试验与SO42-示踪试验得到的溶浸液流速特征具有较好的一致性。
中文关键词: 地下水示踪  地浸采区  铀矿  巴彦乌拉
Abstract:Acid in-situ leaching of uranium is one of the most commonly used mining methods for sandstone-type uranium deposits. Due to high acid solution injected into underground ore-bearing layer in in-situ leaching, permeability of ore-bearing layer is often reduced by chemical precipitation blockage, and efficiency of uranium leaching is reduced. Therefore, it is necessary to explore variation characteristics of groundwater (solution) flow rate during in-situ leaching. Groundwater tracer test was carried out in C10 mining area of Bayanwula uranium mine. The test results show that there are multiple (at least two) seepage channels from injection hole to extraction hole. Flow rate of solution in faster channel is 1.95—2.06 m/d, and that in slower channel is 1.35—1.44 m/d. Flow velocity characteristics of leaching solution obtained by KI tracer test and SO42- tracer test corresponds to each other.
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基金项目:国家自然科学基金核技术创新联合基金项目(U1967209)
引用文本:
何挺,刘金辉,阳奕汉,姚关怀,邢拥国,胡鹏飞,王如意,梁大业,王晓伟,张峰.内蒙古巴彦乌拉铀矿地浸采区地下水示踪试验[J].有色金属(冶炼部分),2021(10):50-57.
HE Ting,LIU Jin-hui,YANG Yi-han,YAO Guang-huai,XING Yong-guo,HU Peng-fei,WANG Ru-yi,LANG Da-ye,WANG Xiao-wei,ZHANG Feng.Tracer Test of Groundwater in In-situ Leaching Area of Bayanwula Uranium Mine in Inner Mongolia[J].Nonferrous Metals (Extractive Metallurgy),2021(10):50-57.

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