新疆某地煤矿放射性水平调查及从业人员剂量分析  

Investigation on radiation level in certain coal mines in Xinjiang and dose analysis of employees

作　　者：许慧萍[1] 李军 XU Huiping;LI Jun(China Institute of Atomic Energy,Beijing 102413 China;Xinjiang Monitoring and Supervising Centre of Radiation Environment)

机构地区：[1]中国原子能科学研究院,北京102413 [2]新疆维吾尔自治区辐射环境监督站

出　　处：《中国辐射卫生》2021年第1期44-47,共4页Chinese Journal of Radiological Health

摘　　要：目的对新疆某地区煤矿开采过程中环境放射性水平进行调查和分析,了解该地区煤矿中伴生放射性分布情况,并估算从业人员所受有效剂量。方法以新疆某地区煤矿开采活动为研究对象,通过现场测量、采样分析,获得开采过程中的环境放射性水平,并以此为依据评价从业人员在煤矿开采过程中的受照剂量。结果该地区部分煤矿井下环境中γ辐射剂量率及氡浓度偏高;各煤矿的煤矸石中放射性核素含量均小于1 Bq/g,大部分煤样中放射性核素含量小于1 Bq/g;各煤矿矿坑涌水中总α、总β含量低于污水排放标准中的排放限值,煤矿矿井中氡浓度水平是从业人员辐射影响的重要因素。结论通过调查,了解该地区地下贮存煤炭资源的放射性水平;为该地区现有煤矿的管理和煤矿规划提供客观依据;为今后我国矿产资源开发利用的管理提供技术支持。Objective To understand the distribution of associated radioactivity, though investigating and analyzing the level of environmental radioactivity in certain coal mines in Xinjiang, and estimate the effective dose received by the workers. Methods Taking coal mining activities in a certain area of Xinjiang Province as the object of the study, the environmental radioactivity level in the mining process was obtained through on-site measurement and sampling analysis, and the exposure dose of the workers in the coal mining process was evaluated accordingly. Results The radiation dose rate and radon concentration in the underground environment of most coal mines in this area are high. The content of radionuclides in gangue of each coal mine is less than 1 Bq/g, the content of radionuclides in most coal samples is less than 1 Bq/g, and the total α and β in the gusher water of each coal mine are lower than the discharge limits of the sewage discharge standards. The radon concentration level in coal mines is an important factor affecting the radiation exposure of workers.Conclusion Through the investigation of this project, the radioactive level of coal resources stored underground in a certain area is understood,which provides an objective basis for the management and planning of existing coal mines in this area, and provides technical support for the management of exploitation and utilization of mineral resources in China.

关 键 词：煤矿 从业人员 有效剂量 

分 类 号：X591[环境科学与工程—环境工程]