| 徐文平，丁德馨*，饶龙，李广悦，陈翔.松散破碎射气介质中氡运移的气液两相耦合数学模型及其数值解[J].南华大学学报(自然科学版),2009,23(4):1~4.[XU Wen-ping，DING De-xin*，RAO Long，LI Guang-yue,CHEN Xiang.A Coupled Mathematic Model for Radon Migration through Gas-liquid Two-phase Fluid in Loose Fragmented Radioactive Medium[J].Journal of University of South China(Science and Technology),2009,23(4):1~4.] |
| 松散破碎射气介质中氡运移的气液两相耦合数学模型及其数值解 |
| A Coupled Mathematic Model for Radon Migration through Gas-liquid Two-phase Fluid in Loose Fragmented Radioactive Medium |
| 投稿时间：2009-06-20 |
| DOI： |
| 中文关键词: 松散破碎射气介质 氡运移 气液两相流 模型 |
| 英文关键词:loose fragmented radioactive medium radon migration gas-liquid two-phase flow model |
| 基金项目:国家自然科学基金资助项目(10575048)；湖南省教育厅重点科研基金资助项目(07A061) |
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| 中文摘要: |
| 虽然原地爆破浸出采铀技术是一种经济、高效、适合我国铀矿床特点的新的开采技术，但它所引起的井下氡污染已不容忽视．根据原地爆破浸出采铀采场铀矿堆所具有的松散、破碎和非均匀的特性，将铀矿堆抽象为松散破碎射气介质，基于多孔介质中的气-液两相渗流理论和氡运移的扩散-渗流理论，建立了松散破碎射气介质中氡运移的气液两相耦合作用数学模型，并采用有限差分法求出了模型的数值解．通过数值解研究了松散破碎射气介质中气-液两相渗流状态下氡的活度浓度分布特征，为松散破碎射气介质中氡的运移状况的预测和预报，及原地破碎浸出采场氡污染的治理与控制提供了理论依据． |
| 英文摘要: |
| In-place leaching of fragmented uranium ore by blasting is a new mining technology for Chinese uranium deposits.This method has the advantages of being economical and efficient,but the underground radon contamination brought by it has become a widely concerned problem.In this research,the uranium ore heap is abstracted to a loose fragmented radioactive medium according to its characteristics of being loose,fragmented and inhomogeneous.Firstly,a mathematic model for radon migration through gas-liquid two-phase fluid in loose fragmented radioactive medium is established based on the theories of two-phase flow through a porous medium and radon migration by diffusion and convection.Secondly,the finite difference method was used to solve the differential equations.Finally,the distribution characteristics of the activity concentration of radon in a loose fragmented radioactive medium are studied in the state of gas-liquid two-phase flow.The theoretical foundation is provided for forecasting migration of radon in a loose fragmented radioactive medium and radon control in stopes of in-place leaching of fragmented uranium ore by blasting． |
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