|
|
Building management and effect evaluation of high radon in geothermal field |
ZHANG Qingzhao, CUI Hongxing, SHANG Bing, WU Yunyun |
National Institute for Radiological Protection, China CDC, Beijing 100088 China |
|
|
Abstract Objective To explore the source and control of radon in high radon houses in geothermal fields; Methods Radon concentration in indoor and soil was measured by ATD detector in winter and summer; radionuclides in building materials were measured by gamma-ray spectrometry; radionuclides dose rates of building materials were measured by 6150 A D/ 6H X-γ ray detector; and radon reduction technology was applied to one of the houses;Results The average radon concentrations in 32 rooms were (106.4 ±63.7) Bq/m3 (summer) and (421.3 ±138.2) Bq/m3 (winter), and the concentrations in 12.5% (summer) and 96.9% (winter) of the rooms exceed 150 Bq/m3. The average radon concentration in soil around buildings was 12890 Bq/m3 (n = 24), which is 1.7 times of the typical soil radon concentration in Beijing (7600 Bq/m3). After soil decompression, the radon concentration in the house could be reduced to less than 100 Bq/m3. The radon reduction rates of active decompression and passive decompression were 94.6% and 71.4%, respectively.Conclusion The effect of soil decompression on reducing radon concentration in the bottom rooms is obvious. Attention should be paid to the radon in residential environment of geothermal field.
|
Received: 09 September 2020
|
|
|
|
|
[1] 周总瑛, 刘世良, 刘金侠. 中国地热资源特点与发展对策[J]. 自然资源学报,2015,30(7):1210-1221. DOI: 10.11849/zrzyxb.2015.07.013 Zhou ZY, Liu SL, Liu JX. Study on the characteristics and development strategies of geothermal resources in China[J]. J Nat Resour, 2015, 30(7): 1210-1221. DOI: 10.11849/zrzyxb.2015.07.013 [2] 冯阿建, 张新军, 丁子荣, 等. 测氡法在地热资源勘察中的应用研究[J]. 煤炭技术,2015,34(9):116-118. DOI: 10.13301/j.cnki.ct.2015.09.045 Feng AJ, Zhang XJ, Ding ZR, et al. Applied research of radon measurement in detecting geothermal resources[J]. Coal Technol, 2015, 34(9): 116-118. DOI: 10.13301/j.cnki.ct.2015.09.045 [3] 增瑞祥, 王治, 张进平, 等. 北京小汤山地热田水位与开采量变化关系研究[C]//北京地热国际研讨会论文集, 2002: 228-232. Zeng RX, Wang Z, Zhang JP, et al. Study on the relationship between water level and exploitation quantity of Xiaotang Mountain geothermal field in Beijing[C]//Proceedings of Beijing Geothermal International Symposium, 2002: 228-232. [4] 孙颖, 许辉熙, 刘久荣, 等. 中低温地热田的地热资源计算评价-以北京市小汤山地热田为例[J]. 安徽农业科学,2009,37(14):6535-6537. DOI: 10.13989/j.cnki.0517-6611.2009.14.004 Sun Y, Xu HX, Liu JR, et al. Calculation assessment of geothermal resources in medium-low temperature geothermal field[J]. J Anhui Agric Sci, 2009, 37(14): 6535-6537. DOI: 10.13989/j.cnki.0517-6611.2009.14.004 [5] 刘菁华, 王祝文, 王晓丽, 等. 放射性测量在佳木斯城区地下热水勘探中的应用[J]. 吉林大学学报(地球科学版),2008,38(5):892-898. DOI: 10.13278/j.cnki.jjuese.2008.05.012 Liu JH, Wang ZW, Wang XL, et al. Application of radiometric measurement for underground thermal water detection in Jiamusi City[J]. J Jilin Univ Earth Sci Ed, 2008, 38(5): 892-898. DOI: 10.13278/j.cnki.jjuese.2008.05.012 [6] Cox ME. Ground radon survey of a geothermal area in Hawaii[J]. Geophys Res Lett, 1980, 7(4): 283-286. DOI: 10.1029/GL007i004p00283 [7] 尚兵, 崔宏星, 唐莉, 等. 地质断裂带上方土壤氡析出率与室内氡浓度的测量[C]//氡水平、效应及危害评价专题讨论会论文集. 苏州, 1995. Shang B, Cui HX, Tang L, et al. Measurement of soil radon exhalation rate and indoor radon concentration above geological fault zone[C]//Proceedings of Symposium on Radon Level, Effect and Hazard Assessment. Suzhou, 1995. [8] 中华人民共和国住房和城乡建设部. GB 50325—2020《民用建筑工程室内环境污染控制标准》[S]. 北京: 中国计划出版社, 2020. Ministry of Housing and Urban Rural Development of the People's Republic of China. GB 50325—2020Standard for indoor environmental pollution control of civil construction engineering[S]. Beijing: China Planning Press, 2020. [9] 王喜元, 朱立, 吕磊, 等. 中国土壤氡概况[M]. 北京: 科学出版社, 2006: 274. Wang XY, Zhu L, Lv L et al. Survey of soil radon in China[M]. Beijing: Science Press, 2006: 274. [10] 张继勉. 建筑材料放射性水平研究现状及进展[J]. 中国辐射卫生,2002,11(1):53-54. DOI: 10.3969/j.issn.1004-714X.2002.01.038 Zhang JM. Present situation and development of the research on radioactive level of building materials[J]. Chin J Radiol Heal, 2002, 11(1): 53-54. DOI: 10.3969/j.issn.1004-714X.2002.01.038 [11] 张永贵, 于涛, 马振珠, 等. 我国水泥产品天然放射性核素比活度的调查分析[J]. 中国建材科技,2009,18(6):1-5. DOI: 10.3969/j.issn.1003-8965.2009.06.001 Zhang YG, Yu T, Ma ZZ, et al. The investigation and analysis on natural radioactivity nuclide specific activity of cement product in China[J]. China Build Mater Sci Technol, 2009, 18(6): 1-5. DOI: 10.3969/j.issn.1003-8965.2009.06.001 [12] 王其亮, 何苗挺, 崔广志, 等. 我国天然环境电离天然辐射外照射剂量的调查与评价[J]. 中华放射医学与防护杂志,1987,7(2):78-82 Wang QL, He MT, Cui GZ, et al. Investigation and evaluation of external dose of natural ionizing radiation in natural environment of China[J]. Chin J Radiat Med Prot, 1987, 7(2): 78-82 [13] 刘智慧, 马国学, 曾利萍, 等. RAD7测氡仪测量氡浓度的影响因素-北京市室内氡测量与分析[J]. 中国辐射卫生,2017,26(3):348-350, 356. DOI: 10.13491/j.cnki.issn.1004-714X.2017.03.033 Liu ZH, Ma GX, Zeng LP, et al. The factors influencing the accuracy of radon concentration using RAD7 radon minitor measurement and analysis of indoor radon in Beijing[J]. Chin J Radiol Health, 2017, 26(3): 348-350, 356. DOI: 10.13491/j.cnki.issn.1004-714X.2017.03.033 [14] 张建勋. 地下水中氡含量的动态变化及其应用研究[J]. 中国科技博览,2010,32(1):315 Zhang JX. Dynamic change of radon content in groundwater and its application[J]. China Sci Technol Expo, 2010, 32(1): 315 [15] David SKT. Handbook on indoor radon: A public health perspective[J]. Int J Environ Stud, 2010, 67(1): 100-102. DOI: 10.1080/00207230903556771
|
[1] |
WANG Chunhong, LIU Senlin, WANG Xiaofeng, WANG Wei, XING Yu, YANG Mingli, HAN Chuncai, DUO Ji, JIANG Ziying, LI Jingjing, LIU Weifu, WEN Baoyin, GU Jiangang, GUO Luzhen, YANG Tao. Investigation on indoor radon concentrations in Tibet and dose assessment to residents[J]. , 2020, 29(4): 366-369. |
|
|
|
|