叶勇军, 张英朋. 矿井通风网络中氡致剂量的估算及控制研究[J]. 核科学与工程, 2024, 44(3): 667-676.
引用本文: 叶勇军, 张英朋. 矿井通风网络中氡致剂量的估算及控制研究[J]. 核科学与工程, 2024, 44(3): 667-676.
YE Yongjun, ZHANG Yingpeng. Study on Estimation and Control of Radon-Induced Dose in the Mine Ventilation Network[J]. Chinese Journal of Nuclear Science and Engineering, 2024, 44(3): 667-676.
Citation: YE Yongjun, ZHANG Yingpeng. Study on Estimation and Control of Radon-Induced Dose in the Mine Ventilation Network[J]. Chinese Journal of Nuclear Science and Engineering, 2024, 44(3): 667-676.

矿井通风网络中氡致剂量的估算及控制研究

Study on Estimation and Control of Radon-Induced Dose in the Mine Ventilation Network

  • 摘要: 矿井下作业人员受到的内照射辐射剂量主要来源于氡及氡子体。为了减少作业人员辐射危害,需对井下各条支路的氡致剂量进行估算与控制。为此,依据通风网络理论、核素衰变理论、粒子沉降理论和剂量估算模型,分别提出了矿井通风网络各支路的氡活度浓度、氡子体α潜能浓度和氡致剂量的估算模型;接着,基于两种氡致剂量估算模型,提出了通风网络氡致剂量的控制方法;最后,采用MATLAB软件编写了专门的程序对具体算例进行了解算与分析。本研究提出的两种氡致剂量的估算模型分别考虑了通风支路的氡平衡因子和氡子体颗粒物沉降作用,可用于估算不同氡析出特性与通风条件下通风网络的氡致剂量分布,并对通风网络的各支路的氡致剂量进行控制,能为地下矿山通风网络的氡防护设计与优化提供技术支持。

     

    Abstract: The natural radiation dose received by workers in underground mines mainly comes from radon and its daughters. In order to reduce the radiation hazards to workers, it is necessary to estimate and control the radon-induced dose in each branch of the underground mine. Therefore, based on the ventilation network theory, nuclide decay theory, particle settlement theory, and dose estimation model, these models for estimating radon activity concentration, radon daughter alpha potential concentration, and radon-induced dose in each branch of the mine ventilation network was proposed. Subsequently, based on two radon-induced dose estimation models, a control method for radon induced-dose in the ventilation network was proposed. Finally, a specialized code was written using the MATLAB software to calculate and analyze specific examples. The results show that the two proposed estimation models for radon-induced dose in the mine ventilation network consider the radon equilibrium factor and the settlement of radon daughter particles, respectively. They can be used to estimate the distribution of radon-induced dose in the ventilation networks under different radon exhalation characteristics and ventilation conditions, and control the radon-induced dose in each branch of the ventilation network. This can provide technical support for the design and optimization of radon protection in ventilation networks of underground mine.

     

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