核电厂核事故放射性污染物扩散模拟研究
发布时间：2018-11-16 21:50
【摘要】：随着地球资源的不断匮乏,核能源作为一种环保高产能能源,必将逐步成为未来研究发展的主要方向。核事故给人类带来的灾难,让人类对发展核能的愿望望而却步,加强核能源安全开发利用则成为重中之重。然而,一旦发生核事故,根据污染物扩散浓度采取相应的防护措施,保障居民的生命安全就显得尤为重要。但在核事故早期,核事故区域放射性污染物浓度测定存在一定的困难,因此,开展放射性污染物扩散模拟研究,为核事故应急决策提供技术支持,就显得尤为迫切。本课题基于核电厂周围的地理信息,大气气象环境,监测子站的环境信息,应用遗传算法进行源型分析,实现核事故源强推测;同时考虑了干沉降、湿沉降、放射性衰变和风向变化等因素,对大气扩散高斯模型进行了改进,建立了适合核电厂核事故污染扩散模拟的放射性核素污染扩散模型。在上述研究基础上,应用GIS等信息技术,以辽宁红沿河核电厂为例,设计实现了核电厂核事故放射性污染扩散模拟系统。该系统具有核事故源项分析、放射性核素污染扩散模拟、以及污染扩散结果的可视化查询等功能,可以为核电厂核事故应急决策提供技术支持。
[Abstract]:With the continuous scarcity of earth resources, nuclear energy, as a kind of environmental protection and high productivity energy, will gradually become the main direction of future research and development. The disaster caused by nuclear accident has deterred mankind from developing nuclear energy, and strengthening the safe development and utilization of nuclear energy has become the top priority. However, in the event of a nuclear accident, it is very important to take corresponding protective measures according to the concentration of pollutant diffusion to ensure the safety of residents. However, in the early stage of nuclear accident, it is difficult to measure the concentration of radioactive pollutant in the area of nuclear accident. Therefore, it is urgent to carry out the simulation study of radioactive pollutant diffusion to provide technical support for the emergency decision of nuclear accident. Based on the geographical information of nuclear power plant, the atmospheric meteorological environment, the monitoring of the environmental information of sub-station, the genetic algorithm is used to analyze the source type to realize the source estimation of nuclear accident. Considering the factors of dry deposition, wet deposition, radioactive decay and wind direction change, the Gao Si model of atmospheric diffusion is improved, and a radionuclide pollution diffusion model suitable for the simulation of nuclear accident pollution diffusion in nuclear power plant is established. On the basis of the above research, using the information technology such as GIS and taking the Hongyan River nuclear power plant in Liaoning as an example, the simulation system of radioactive pollution diffusion in nuclear power plant accident is designed and realized. The system has the functions of nuclear accident source term analysis, radionuclide contamination diffusion simulation, and visual query of pollution diffusion results. It can provide technical support for nuclear accident emergency decision in nuclear power plant.
【学位授予单位】：辽宁大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X591
本文编号：2336730
[Abstract]:With the continuous scarcity of earth resources, nuclear energy, as a kind of environmental protection and high productivity energy, will gradually become the main direction of future research and development. The disaster caused by nuclear accident has deterred mankind from developing nuclear energy, and strengthening the safe development and utilization of nuclear energy has become the top priority. However, in the event of a nuclear accident, it is very important to take corresponding protective measures according to the concentration of pollutant diffusion to ensure the safety of residents. However, in the early stage of nuclear accident, it is difficult to measure the concentration of radioactive pollutant in the area of nuclear accident. Therefore, it is urgent to carry out the simulation study of radioactive pollutant diffusion to provide technical support for the emergency decision of nuclear accident. Based on the geographical information of nuclear power plant, the atmospheric meteorological environment, the monitoring of the environmental information of sub-station, the genetic algorithm is used to analyze the source type to realize the source estimation of nuclear accident. Considering the factors of dry deposition, wet deposition, radioactive decay and wind direction change, the Gao Si model of atmospheric diffusion is improved, and a radionuclide pollution diffusion model suitable for the simulation of nuclear accident pollution diffusion in nuclear power plant is established. On the basis of the above research, using the information technology such as GIS and taking the Hongyan River nuclear power plant in Liaoning as an example, the simulation system of radioactive pollution diffusion in nuclear power plant accident is designed and realized. The system has the functions of nuclear accident source term analysis, radionuclide contamination diffusion simulation, and visual query of pollution diffusion results. It can provide technical support for nuclear accident emergency decision in nuclear power plant.
【学位授予单位】：辽宁大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X591
【参考文献】
相关期刊论文 前6条
1 李华,邓继勇,王旭辉,张利兴;用高斯模型计算大气中放射性核素云团的扩散[J];辐射防护;2004年02期
2 柳盛;;可变风向的空气污染扩散模拟系统的实现[J];科技信息;2010年27期
3 ;重要有毒物质泄漏扩散模型研究[J];化工劳动保护;1996年03期
4 孙成龙;白晓军;;国内外环境影响评价模型软件发展现状研究[J];铁道劳动安全卫生与环保;2007年01期
5 宁莎莎;蒯琳萍;;混合遗传算法在核事故源项反演中的应用[J];原子能科学技术;2012年S1期
6 曹博;杨晔;陈义学;;放射性核素大气扩散程序SDUG的开发与初步验证[J];原子能科学技术;2013年S2期
相关硕士学位论文 前2条
1 高阳;核事故早期实时剂量评价方法仿真研究[D];哈尔滨工程大学;2007年
2 叶天波;辽宁红沿河核电厂可能最大风暴潮的估算[D];上海交通大学;2007年
，本文编号：2336730
本文链接：https://www.wllwen.com/kejilunwen/huanjinggongchenglunwen/2336730.html
最近更新
教材专著
