基于数值模拟的加压酸法浸铀井网合理间距研究  

Study on Reasonable Well Spacing of Pressure Acid Leaching of Uranium based on Numerical Simulation

作　　者：罗跃 白细民 吴慧 余圣品 陈茜茜 LUO Yue;BAI Ximin;WU Hui;YU Shengpin;CHEN Qianqian(School of Water Resources and Environmental Engineering,East China University of Technology,Nanchang 330013,China;Hydrogeological Brigade of Jiangxi Geological Bureau,Nanchang 330000,China;Nanchang Key Laboratory of Hydrogeology and High Quality Groundwater Resources Exploitation and Utilization,Jiangxi Survey Design Research Institute Co.,Ltd.,Nanchang 330000,China)

机构地区：[1]东华理工大学水资源与环境工程学院,南昌330013 [2]江西省地质局水文地质大队,南昌330000 [3]江西省勘察设计研究院有限公司,南昌市水文地质与优质地下水资源开发利用重点实验室,南昌330000

出　　处：《有色金属（冶炼部分）》2024年第10期165-171,共7页Nonferrous Metals（Extractive Metallurgy)

基　　金：南昌市水文地质与优质地下水资源开发利用重点实验室资助项目(20231C23);国家自然科学基金资助项目(42062017)。

摘　　要：为探讨酸法地浸中井距对铀浸出效率的影响,以内蒙巴彦乌拉铀矿区为例,通过酸法地浸采铀数值模型,探讨溶浸液覆盖范围及流速的时空变化特征。从井场成本、浸铀周期、溶浸死角三个方面探讨不同井距对浸铀的影响,26种方案比选结果表明:1)采区井场随井距增加而减小,井距对井场成本影响较大;2)采区内特征流速随井距增大而减小,由于流速会影响浸铀周期,因此相对浸铀周期随井距增大而增大;3)随井距增大,溶浸死角空间范围呈近似指数增大。综合考虑,在本文模拟条件下,认为26~30 m为最佳浸铀井距,该结果可为该矿区后续地浸工艺孔的合理布设提供参考。In order to explore the effect of well spacing on the uranium leaching efficiency in acid in-situ leaching,taking the Bayan Ula mining area as an example,and using the finite element method to establish a numerical model for acid in-situ leaching uranium mining,and discuss the coverage and flow rate of the leaching solution.Through the comparison and analysis of 26 schemes,the influence of different well spacing on uranium leaching was discussed from three aspects:well site cost,uranium leaching cycle,and leaching dead angle.The results show that:1)The fixed cost of the mining area varies with the well.2)The characteristic flow velocity in the mining area decreases with the increase of the well spacing,and the relative uranium leaching period increases with the increase of the well spacing;3)With the increase of the well spacing,the volume of the leaching dead angle increases approximately exponentially.Comprehensive consideration,under the simulation conditions in this paper,it is considered that 26 meters to 30 meters is the optimal well spacing for uranium leaching.The results can provide a reference for the reasonable layout of subsequent ground leaching process holes in this mine area.

关 键 词：铀矿地浸 加压酸浸 井距优化 数值模拟 

分 类 号：TL212.12[核科学技术—核燃料循环与材料]