地震监测扩散式采样测氡仪测试装置研究及其初步应用

辐射防护 ›› 2022, Vol. 42 ›› Issue (6): 571-578.

地震监测扩散式采样测氡仪测试装置研究及其初步应用

赵影^1,2,3, 陈志², 胡旭东⁴, 王成楠⁵, 肖孟仁^1,3, 鲍志诚³

1.九江地震监测中心站,江西九江 332006;
2.中国地震局地震预测重点实验室,中国地震局地震预测研究所,北京 100036;
3.江西九江扬子块体东部地球动力学野外科学观测研究站,江西九江 332006;
4.东华理工大学,南昌 330000;
5.江西省地质环境调查研究院,南昌 330000

收稿日期:2021-09-27 出版日期:2022-11-20 发布日期:2023-01-05
通讯作者: 陈志。E-mail:dugu_830822@163.com
作者简介:赵影(1990—),男,2013年毕业于长江大学地球物理学专业,学士,工程师。E-mail:993085163@qq.com
基金资助:
江西九江扬子块体东部地球动力学野外科学观测研究站开放基金资助项目(OGYB202206)。

Study on the testing device of diffusion sampling radon measuring instrument and preliminary application

ZHAO Ying^1,2,3, CHEN Zhi², HU Xudong⁴, WANG Chengnan⁵, XIAO Mengren^1,3, BAO Zhicheng³

1. Jiujiang Earthquake Monitoring Center Station, Jiangxi Jiujiang 332006;
2. CEA Key Laboratory of Earthquake Forecasting, Institute of Earthquake Science, China Earthquake Administration,Beijing 100036;
3. Observatory for Geodynamic of the East Yangtze Block in Jiujiang, Jiangxi Jiujiang 332006;
4. East China Institute of Technology, Nanchang 330000;
5. Geological Survey of Jiangxi Province, Nanchang 330000

Received:2021-09-27 Online:2022-11-20 Published:2023-01-05

摘要/Abstract

摘要： 测氡仪的响应能力与稳定性是保障地震氡监测预测效能的关键因素,作为目前地震地下流体监测预测新兴手段,静电收集扩散式采样测氡仪响应能力与稳定性指标关系到开展地震土壤氡连续监测的适用性。本文依托九江二井高含氡量井水水样,设计一种扩散式采样测氡仪测试装置,并对一款静电收集扩散式采样测氡仪开展高浓度下响应能力、稳定性测试实验。结果显示:测试装置内氡浓度可在0~120 kBq/m³范围内切换,且在目标氡浓度下能长时间保持相对稳定;该静电收集扩散式采样测氡仪在高浓度下整点采样相差时间为2 h,8 h以上稳定性小于5%。测试装置由恒流模块、脱气模块、干燥瓶、测试腔体、计量标准器、气泵等组成,可用于地震监测扩散式采样测氡仪的响应能力和稳定性测试。

关键词: 地震监测, 扩散式采样, 测氡仪, 响应能力, 稳定性

Abstract: The response ability and stability of radon detector are the key factors to ensure the effectiveness of seismic monitoring and prediction. As a new method of moniroing Seismic underground fluid, the response ability and stability of electrostatic collection diffusion radon detector are related to the applicability of continuous seismic monitoring. In order to meet the detection requirements of the diffusion sampling radon for seismic monitoring, this study designed a test equipment for diffusion sampling radon detector based on the high radon content well water sample of Jiujiang No.2 well, and tested the response ability and stability of a electrostatic collection diffusion sampling radon detector under high concentration. The results show that the concentration of radon in the test device can switch between 0-120 kBq/m³ and can be relatively stable for a long time under the target concentration. The response time of the radon detector at high concentration is 2 hours and the stability is less than 5% for 8 h. The test device consists of crossflow module, degassing module, drying bottle, test chamber, measuring standard, air pump, etc, which can be used to test the response ability and stability of seismic monitoring diffusion sampling radon meter.

Key words: seismic monitoring, diffusion sampling, radon detector, responsiveness, stability

中图分类号:

TL81

赵影, 陈志, 胡旭东, 王成楠, 肖孟仁, 鲍志诚. 地震监测扩散式采样测氡仪测试装置研究及其初步应用[J]. 辐射防护, 2022, 42(6): 571-578.

ZHAO Ying, CHEN Zhi, HU Xudong, WANG Chengnan, XIAO Mengren, BAO Zhicheng. Study on the testing device of diffusion sampling radon measuring instrument and preliminary application[J]. RADIATION PROTECTION, 2022, 42(6): 571-578.

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