以AlphaGUARD P2000F测氡仪为标准仪器,对DDL-2水氡仪进行校准,并在同一观测环境下开展DDL-2水氡仪和FD-125水氡仪对比观测实验。实验结果表明,静置时间为2h,DDL-2水氡仪主、副样电离室校准K值的相对偏差均小于5%,满足目前地震地下流体观测技术规范中测氡仪校准要求。尽管测氡原理不同,DDL-2水氡仪和FD-125水氡仪测值整体趋势变化一致性和同步性较好。相较于当前地震系统广泛使用的水氡仪,DDL-2水氡仪操作流程自动化及仪器数字化水平更高,能够减少日常观测过程中人工操作引起的误差,提升水氡监测数据质量。仪器整体设计基本满足地震地下流体水氡观测技术的发展需求。
Using the AlphaGUARD P2000F radon detector as the standard instrument,this study calibratedthe novel water radon meter DDL-2 and carried out acomparative observation experiment of the DDL-2 water radon meter and the FD-125 radon meter under the same observation environment. The experiment results show that the relative deviation of the calibration K value of the main sample chamber and the secondary sample chamber is less than 5% when the static time is 2 hours, which meets the calibration requirements of the radon measuring instrument in the current technical specification for seismic subsurface fluid observation. In spite of the different radon measuring principles, the radon measuring values of the DDL-2 water radon meter and the FD-125 water radon meter have good consistency and synchronization. Compared with the analog radon instrument widely used in the earthquake monitoring system, the novel DDL-2 water radon meter has a higher level of automation and digitization in the operation process, which can reduce the error caused by manual operation in daily analog observation and improve the quality of radon monitoring data. The overall design of the instrument basically meets the needs of the development demand of radon observation technology for earthquake underground fluid.
2025,46(2): 139-146 收稿日期:2024-9-23
DOI:10.3969/j.issn.1003-3246.2025.02.016
基金项目:山东省地震局一般科研项目(项目编号:YB2427)
作者简介:温丽媛(1984—),女,硕士,高级工程师,主要从事地震监测工作。E-mail:793259930@qq.com
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