期刊论文

Experimental Study on the Gas Permeability of Uranium-bearing Similar Material under Multi-factor Effects

中文

南华大学学报(自然科学版)

1673-0062

2018

32

2

55-61

10.19431/j.cnki.1673-0062.20180611.009

国家自然科学基金资助项目（114750181）；

本校为第一机构

空气渗流对铀矿岩氡析出率具有显著影响.为保证试样之间初始条件一致,选取南方某铀尾砂、石英砂为骨料,水泥为胶结料,辅以掺和料（精铁粉、微硅粉）、改性外加剂（早强剂、减水剂）和蒸馏水,基于相似理论及正交实验制备并优选最符合实验要求的模拟铀矿岩试样.通过设计实验方案,综合考虑温度、围压和含水饱和度等影响因素,开展了多因素作用下模拟铀矿岩气体渗透性变化规律的研究.实验结果表明:随着围压、温度和含水饱和度的增大,试样气体渗透率均呈降低趋势;就试样气体渗透率降幅而言,含水饱和度的影响最为明显,围压次之,温度的影响相对较小;含水饱和度、围压与温度在对试样气体渗透率影响时,存在...

The air seepage has a significant effect on the radon exhalation rate of uranium ore. In order to ensure the consistency of the initial conditions between samples,a certain uranium tailings as well as the quartz sand are selected as the aggregates,the cement as the cementing material,which is supplemented with the admixture（ fine iron powder,microsilica ponder）,modified admixture（ early strength agent, water reducer）,anddistilled water.On the basis of the similarity theory and the orthogonal experiment,the simulated uranium ore which confor...