湿法冶金2026，Vol.45Issue(3)：341-349,9.DOI:10.13355/j.cnki.sfyj.2026.03.009
抽注互换对低渗夹层分布采区的铀浸出改进效果研究
Improvement of Uranium Leaching Performance by Extraction-Injection Well Conversion in Ore Fields with Low-Permeability Interlayers
摘要
Abstract
Uneven and discontinuous calcareous sandstone and mudstone interlayers are distributed in the mining area of Bayin Qinggeli uranium mine.In order to explore the influence of low-permeability interlayers on uranium leaching effect,a three-dimensional unstructured grid lithology model of ore-bearing aquifer was constructed based on borehole data in the test mining area,and the flow field and solute transport process of in-situ leaching uranium under different extraction-injection methods were simulated.By introducing a matrix calculation method based on the actual extraction-injection flow of group wells,the solute mass ratio and natural groundwater content were quantitatively compared and analyzed.The results show that compared with the original extraction-injection method,after the extraction-injection methods of SYC-1 and SYZ-1 wells are interchanged,the range of groundwater drawdown funnel is reduced,the capture ability of pumping wells to leaching solution is significantly improved,the mass ratio of extracted and injected solute is increased by 1.7 times,the natural groundwater content in pumping volume is reduced by 29.4％,the hydraulic connection between extraction-injection wells is stronger,and the leaching effect is better than that of the original extraction-injection method.Calcareous sandstone and mudstone interlayers significantly hinder the hydraulic connection between extraction-injection wells,resulting in significantly different leaching effects of different extraction-injection methods.关键词
地浸采铀/非结构化网格/低渗夹层/抽注互换/数值模拟Key words
in-situ leaching uranium mining/unstructured grid/low-permeability interlayers/extraction-injection well conversion/numerical simulation分类
能源科技引用本文复制引用
王嗣晨,赵利信,贾皓,王亚奴,郝树森,李沁慈,杜志明,谢廷婷,张翀..抽注互换对低渗夹层分布采区的铀浸出改进效果研究[J].湿法冶金,2026,45(3):341-349,9.基金项目
中国核工业集团青年英才项目资助(CNNC-YC2024-65). （CNNC-YC2024-65）
