煤自燃不同地质条件下覆岩氡气输运规律研究

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-04 DOI:10.1007/s10967-024-09746-6

Kaili Dong, Bin Zhou, Yulong Zhang, Zhifan Lu, Xiaoyuan Liu, Junfeng Wang

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引用次数: 0

摘要

采用alpha杯法对3个煤矿的自燃区域进行了圈定。在此之后，钻取岩心，使用RAD7氡探测器测量不同深度的氡浓度。然后，将结果与半无限介质中氡浓度随深度分布方程相结合，证明了该方程对浅层煤层的适用性。在此基础上，建立了氡运移数值模型。研究发现，氡的向上运移被岩层和断层所削弱和吸附，改变了氡的运移路径。

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Study on radon gas transport law of overlying rock layer under different geological conditions of coal spontaneous combustion

The alpha cup method was employed to delineate spontaneous combustion areas in three coal mines. Following this, cores were drilled to measure radon concentration at various depths using the RAD7 radon detector. Subsequently, the results were then combined with the equation of radon concentration distribution with depth in a semi-infinite medium, demonstrating the equation’s suitability for shallow coal seams. Thereafter, numerical models of radon migration were constructed. The study found that the upward migration of radon is weakened and adsorbed by rock formations, and faults, altering the migration path of radon.

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.