| 李向阳,吴穹,洪昌寿,黎明,蔡梓麒.多因素作用对模拟铀矿岩气体渗透率影响的实验研究[J].南华大学学报(自然科学版),2018,32(2):55~61.[LI Xiang-yang,WU Qiong,HONG Chang-shou,LI Ming,CAI Zi-qi.Experimental Study on the Gas Permeability of Uranium-bearing Similar Material under Multi-factor Effects[J].Journal of University of South China(Science and Technology),2018,32(2):55~61.] |
| 多因素作用对模拟铀矿岩气体渗透率影响的实验研究 |
| Experimental Study on the Gas Permeability of Uranium-bearing Similar Material under Multi-factor Effects |
| 投稿时间：2018-01-20 |
| DOI： |
| 中文关键词: 深部铀矿 模拟铀矿岩 气体渗透率 耦合作用 |
| 英文关键词:deep uranium mine simulated uranium ore gas permeability coupling effect |
| 基金项目:国家自然科学基金资助项目(114750181) |
|
| 摘要点击次数: 901 |
| 全文下载次数: 442 |
| 中文摘要: |
| 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,存在明显的耦合作用.本研究填补了铀矿开采领域在此方面的研究空白. |
| 英文摘要: |
| 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),and distilled water.On the basis of the similarity theory and the orthogonal experiment,the simulated uranium ore which conforms to the experimental requirements most are used to prepare and selected as samples preferentially.Through the design of experimental scheme,considering many influential aspects synthetically,including temperature,confining pressure,and water saturation,this thesis implements the research of the permeability change law concerning the simulated uranium ore gas under the action of multiple factors.The experimental results display that,with the increase of confining pressure, temperature,and water saturation,the permeability of the sampled gas presents a decrease tendency;as far as the decreasing amplitude of the gas permeability,the effect of water saturation is the most obvious,followed by the confining pressure.The influence of temperature in this aspect is relatively small;the influence of water saturation, confining pressure,and temperature on the gas permeability of the sample has obvious coupling effect.This research fills up the blank in the field of uranium mining. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|