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地浸过程中抽注比对地下水环境的影响
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摘要
针对某地浸生产井场,研究了其水文地质条件,结合井场布置和生产中的抽注液流量等条件,应用GMS建立了三维地下水数值模型,分别对抽大于注0.1%~5%等8种情况下的地下水流场,浸出液中铀迁移扩散距离、影响范围及浓度分布进行了数值模拟和分析,得到了抽注比与地下水环境影响之间的关系,为原地浸出采铀设计和生产中抽注比的确定提供了技术参数。
Aim at an in-situ leaching uranium well field,the hydrogeologic conditions is investigated.Combined with the arrangement and flux of pumping and injection wells,a three-dimension groundwater numerical model was established by GMS software.Based on eight pumping-injection flux ratios(pumping flux greater than injection flux 0.1%,0.3%,0.5%,1%,2%,3%,4%,5%),the groundwater flow,the groundwater depression cone and the transport distance and range of radionuclide were simulated and analyzed.The relationship between the environmental impact on the groundwater and the pumping-injection flux ratio is obtained.This research laid a technical foundation for determining the pumping-injection flux ratio in the design and production during insitu leaching of uranium.
引文
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