低频振动对铀尾矿库滩面多层覆盖层控氡效果影响的研究  

Experimental study on the effect of low frequency vibration on radon reduction by multi-layer covering on the beach surface of uranium tailings reservoir

作　　者：李军达 李向阳 刘永 洪昌寿 郭睿扬 齐志扬 LI Junda;LI Xiangyang;LIU Yong;HONG Changshou;GUO Ruiyang;QI Zhiyang(Faculty of Resource Environment and Safety Engineering,Nanhua University Hengyang,Hunan 421001;不详)

机构地区：[1]南华大学资源环境与安全工程学院,湖南衡阳421001 [2]湖南省铀尾矿库退役治理技术工程技术研究中心,湖南衡阳421001 [3]铀矿冶放射性控制技术湖南省工程研究中心,湖南衡阳421001

出　　处：《工业安全与环保》2022年第4期21-24,共4页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(11875164);国防科工局“十三五”技术基础科研项目(2018年)(JSZL2018403B001);湖南省自然科学基金青年科学基金(2019JJ50489);湖南省教育厅科研项目重点项目(18A232)。

摘　　要：以湖南省某铀尾矿库为研究对象,基于自制的水平低频振动实验装置与铀尾矿库滩面缩尺模型,进行了水平单向低频振动研究,探究滩面多层覆盖层振动前后氡析出的规律。实验结果表明在单向振动4个频率条件及叠加振动4个频率条件下,模型表层随着频率的递增,裂隙逐步增大;当单一振动频率为25 Hz时,红土-石英砂-红土覆盖层振动后控氡率下降了59%,控氡率仅为9%,此时的控氡率为单一振动频率条件下的最小值,当叠加振动频率为10→15→20 Hz及10→15→20→25 Hz时,控氡率为43%,此时的控氡率为叠加振动频率条件下的最小值。本研究对于铀尾矿库滩面控氡效果评估及长期稳定性分析有一定意义。This paper takes a uranium tailings pond in Hunan Province as the research object,and studies the horizontal unidirectional low-frequency vibration based on the self-made horizontal low-frequency vibration test device and the scaled model of uranium tailings pond beach surface,so as to explore the law of radon emission before and after the vibration of multi-layer covering on beach surface.The experimental results show that under the conditions of four frequencies of unidirectional vibration and four frequencies of superimposed vibration,the cracks on the surface of the model gradually increase with the increase of frequency.When the single vibration frequency is 25 Hz,the radon control rate of red soil-quartz sand-red soil overburden after vibration decreases by 59%and is only 9%.At this time,the radon control rate is the minimum under the single vibration frequency,and when the superimposed vibration frequencies are 10→15→20 Hz and 10→15→20→25 Hz,the radon control rate is 43%.This study has certain significance for evaluating radon control effect and analyzing long-term stability of uranium tailings pond.

关 键 词：低频振动 铀尾矿库 多层覆盖层 氡析出率 

分 类 号：TV6[水利工程—水利水电工程]