通风条件下留矿法采场氡迁移试验研究

doi:10.16265/j.cnki.issn1003-3033.2017.08.025

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (8): 144-149.doi: 10.16265/j.cnki.issn1003-3033.2017.08.025

通风条件下留矿法采场氡迁移试验研究

叶勇军¹ 副教授, 苏杭¹, 丁德馨² 副教授, 余修武¹ 副教授, 钟永明¹, 梁涛¹

1 南华大学环境与安全工程学院,湖南衡阳 421001;
2 南华大学铀矿冶生物技术国防重点学科实验室,湖南衡阳 421001

收稿日期:2017-04-27 修回日期:2017-07-13 出版日期:2017-08-20 发布日期:2020-10-13
作者简介:叶勇军(1979—),男,湖北浠水人,博士,副教授,主要从事铀矿冶安全理论与技术等方面的研究。E-mail: yongjunye@163.com。
基金资助:
国家自然科学基金资助 (11575080,111050609);国家安全生产监督管理总局安全生产重大事故防治关键技术科技项目(hunan-0015-2015AQ);南华大学博士科研启动基金资助(2015XQD38)。

Experimental research on radon migration in shrinkage mining stope under ventilation condition

YE Yongjun¹, SU Hang¹, DING Dexin², YU Xiuwu¹, ZHONG Yongming¹, LIANG Tao¹

1 School of Environment and Safety Engineering, University of South China, Hengyang Hunan 42100, China;
2 Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China,Hengyang Hunan 421001, China

Received:2017-04-27 Revised:2017-07-13 Online:2017-08-20 Published:2020-10-13

摘要/Abstract

摘要： 为了掌握通风作用下铀矿山采场爆破铀矿石堆氡析出规律,以留矿法采场为对象,自制模拟采场颗粒堆积型射气介质氡析出的试验装置,选用我国南方铀矿山粒径小于6 mm的破碎铀矿石为样品,试验研究矿石堆高为20 cm和40 cm条件下,采场排风氡浓度和矿堆氡析出份额与通风方式与通风风量的关系。结果表明:采场排风氡浓度随着通风风量的增加而降低,矿堆氡析出份额随通风风量的增大而增大;同种通风方式和通风风量下,采用下行风的采场排风氡浓度和氡析出份额小于上行风;通风风量和风流方向相同时,中央通风采场排风氡浓度和矿堆氡析出份额均低于端部通风;相同风量下,中央通风采场作业空间单位长度的氡浓度增量大于端部通风。

关键词: 颗粒堆积型射气介质, 通风方式, 氡浓度, 氡析出份额, 留矿法采场

Abstract: In order to study the law of radon exhalation from the blasted uranium ore heap in the stope of uranium mine, the shrinkage stope was chosen as the study subject and simulation experiments were carried out using a self-made experimental device of particle-packing emanation media. The uranium ore sample with a particle size of less than 6 mm was taken from an uranium mine in the south of China. Relationships between radon concentration, radon exhalation portion and ventilation mode, ventilation air volume were studied experimentally under the condition of changing the ore heap height from 20 cm to 40 cm. The results show that the exhaust radon concentration decreases with the increase of air volume, radon exhalation portion of the heap increases with the increase of ventilation air volume, that under the same ventilation air volume and ventilation mode, the exhaust radon concentration and radon exhalation portion of descentional ventilation is lower than that of ascentional ventilation, that when the ventilation air volume and airflow direction are the same, exhaust radon concentration and radon exhalation portion of ore heap in central ventilation stope is lower than that of end ventilation stope, and that radon concentration increment per unit length of the workspace in central ventilation is greater than that in end ventilation when the air volume is the same.

Key words: particle-packing emanation media, ventilation mode, radon concentration, radon exhalation portion, shrinkage stope

中图分类号:

X962

叶勇军, 苏杭, 丁德馨, 余修武, 钟永明, 梁涛. 通风条件下留矿法采场氡迁移试验研究[J]. 中国安全科学学报, 2017, 27(8): 144-149.

YE Yongjun, SU Hang, DING Dexin, YU Xiuwu, ZHONG Yongming, LIANG Tao. Experimental research on radon migration in shrinkage mining stope under ventilation condition[J]. China Safety Science Journal, 2017, 27(8): 144-149.

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通风条件下留矿法采场氡迁移试验研究

Experimental research on radon migration in shrinkage mining stope under ventilation condition

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