Nuclear Techniques ›› 2016, Vol. 39 ›› Issue (5): 50202-050202.doi: 10.11889/j.0253-3219.2016.hjs.39.050202

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS • Previous Articles Next Articles

Concentration distribution rules and characteristics of radon and its progeny in blind roadway with exhaust ventilation

ZHANG Yuxuan¹, YE Yongjun^2,3, XIAO Detao¹, JIANG Junting², DING Dexin³, ZHONG Yongming², XIE Chao²

1. School of Nuclear Science and Technology, University of South China, Hengyang 421001, China;
2. School of Environment Protection and Safety Engineering, University of South China, Hengyang 421001, China;
3. Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China

Received:2015-12-30 Revised:2016-04-09 Online:2016-05-10 Published:2016-05-12
Supported by:
Supported by National Natural Science Foundation of China(No.11105069, No.11575080);Key Technology Project of Prevention for Safety Production Major Accident(No.hunan-0015-2015AQ)

Abstract

Abstract:

Background: The blind roadway is one of the most important places where radon and its progeny’s concentration is high in uranium mine exploitation. Purpose: The aim is to guide the design of exhaustion of radon and its progeny in blind roadway. Methods: The simplified mathematical relationships were primarily improved between radon concentration and radon progeny alpha potential energy concentration in the wind in uranium mine, and the influence of ventilation resistance force on rock wall radon release rate was analyzed; the mathematical calculation models of distribution for the concentration of radon and radon progeny in the blind roadway with driving-force ventilation were obtained, respectively, and through the models the minimum wind volume formulas for exhausting radon and its progeny in blind roadway were obtained. According to some particular roadways, the influence of different ventilation volumes and exhalation rates of radon on rock wall on radon and its progeny concentration, the influence of variable physical parameters on the wind volume for exhausting radon and its progeny in the blind roadway were discussed, respectively. Results & Conclusion: The results show that, the further it is from the roadway inlet, the higher the concentration of the radon and its progeny in the blind roadway is. And the concentration of radon and its progeny decreases with the increment of the wind volume, while increases with the increment of exhalation rate of radon on rock wall; the minimum wind volume needed for exhausting radon and radon progeny in the blind roadway with driving-force ventilation increases with the increment of the rock wall radon release rates and the length of the blind roadway.

Key words: Exhaust ventilation, Blind roadway, Radon and its progeny, Concentration distribution

CLC Number:

TL211

ZHANG Yuxuan, YE Yongjun, XIAO Detao, JIANG Junting, DING Dexin, ZHONG Yongming, XIE Chao. Concentration distribution rules and characteristics of radon and its progeny in blind roadway with exhaust ventilation[J].Nuclear Techniques, 2016, 39(5): 50202-050202.

References

1 周星火. 铀矿通风与辐射安全[M]. 哈尔滨:哈尔滨工程大学出版社, 2009:75-76 ZHOU Xinghuo. Uranium mine ventilation and radiation safety[M]. Harbin:Harbin Engineering University Press, 2009:75-76

2 Schroeder G L, Evans R D. Some basic concepts in uranium mine ventilation[J]. Transactions of the AIME, 1969, 244:301-307

3 Mudd G M. Radon sources and impacts:a review of mining and non-mining issues[J]. Reviews in Environmental Science and Bio/Technology, 2008, 7(4):325-353

4 戴剑勇, 石竞羽. 基于氡析出机制的铀矿井巷道通风可靠性分析[J]. 核技术, 2015, 38:010206. DOI:10.11889/j.0253-3219.2015.hjs.38.010206 DAI Jianyong, SHI Jingyu. Reliability analysis of tunnel ventilation based on the mechanism of radon exhalation in uranium mine[J]. Nuclear Techniques, 2015, 38:010206. DOI:10.11889/j.0253-3219.2015.hjs.38.010206

5 Richon P, Perrier F, Sabroux J, et al. Spatial and time variations of radon-222 concentration in the atmosphere of a dead-end horizontal tunnel[J]. Journal of Environmental Radioactivity, 2004, 78(2):179-198

6 El-Fawal M. Mathematical modeling for radon prediction and ventilation air cleaning system requirements in underground mines[J]. Journal of American Science, 2011, 7(2):389-402

7 Panigrahi D C, Sahu P, Mishra D P. An improved mathematical model for prediction of air quantity to minimize radiation levels in underground uranium mines[J]. Journal of Environmental Radioactivity, 2015, 140:95-104

8 叶勇军, 丁德馨, 王立恒, 等. 压入式通风独头巷道内氡及其子体浓度的计算模型与其分布规律[J]. 中南大学学报(自然科学版), 2015, 46(5):1799-1805 YE Yongjun, DING Dexin, WANG Liheng, et al. Calculation model of radon and its daughters concentration in blind roadway with forced ventilation and their distribution rule[J]. Journal of Central South University(Science and Technology), 2015, 46(5):1799-1805

9 叶勇军, 王立恒, 丁德馨, 等. 压抽混合式通风独头巷道内氡及氡子体浓度的计算模型及其分布规律研究[J]. 核科学与工程, 2014, 34(2):219-227 YE Yongjun, WANG Liheng, DING Dexin, et al. Study on calculation models and distribution rules of the radon concentration and its progenies concentration in blind roadway with forced-exhaust ventilation[J]. Nuclear Science and Engineering, 2014, 34(2):219-227

10 张哲, 朱民安, 张永祥. 地下工程与人居环境氡防护技术[M]. 北京:原子能出版社, 2010:14-15, 167-174 ZHANG Zhe, ZHU Min'an, ZHANG Yongxiang. Radon protection technology for underground engineering and human settlements[M]. Beijing:Atomic Energy Press, 2010:14-15, 167-174

11 金属非金属矿山安全规程:GB16423-2006[S]. 2006 Safety regulations for metal and nonmetal mines:GB16423-2006[S]. 2006

12 铀矿井排氡及通风技术规范:EJ/T359-2006[S]. 2006 Technical regulations for radon exhaustion and ventilation in underground uranium mine:EJ/T359-2006[S]. 2006

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