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断层氢气浓度观测技术试验研究
范雪芳,李自红,刘国俊,黄春玲,王向阳
1.山西省地震局,太原市晋祠路二段69 号030021;2.太原大陆裂谷动力学国家野外科学观测研究站,太原市晋源区太原基准地震台030025;3.太原理工大学矿业工程学院,太原030024;4.山西省地震局夏县中心地震台,山西夏县044000
摘要:
为了探索地下流体地震监测新技术、新方法,在中条山山前断裂带上开展了断层氢气浓度观测技术试验研究。通过对观测点位置、集气装置以及采样深度等观测条件的试验研究,给出了使用痕量氢在线自动分析仪进行断层氢气浓度观测的技术方法。针对在野外环境下该类仪器的稳定性、适宜条件进行了对比试验,对同一条断层上不同测点的氢气浓度动态特征进行了观测对比分析。试验结果表明,在断裂带上进行氢气浓度连续观测,技术上是可行的,本文提出的观测技术方法对观测点勘选、观测深度选择以及对观测数据的客观分析等均有参考意义。
关键词:  中条山山前断裂  断层  氢气浓度  连续观测  地震监测新技术
DOI:
分类号:
基金项目:地震科技星火计划“中条山山前断裂断层氢气观测实验研究”项目( XH12006) 资助
Test of observation methods on the concentration of hydrogen in fault gas
Fan Xuefang1,2, Li Zihong3,4, Liu Guojun5, Huang Chunling5, Wang Xiangyang5
1) Earthquake Administration of Shanxi Province,Taiyuan 030021,China;2.Nationa1 Contihenta1 Rift Vailey Dynamics Observatory of Taiyuan,Taiyuan 030025,China;3.Earthquake Administration of Shanxi Province,Taiyuan 030021,China;4.College of Mining Technology,Taiyuan University of Technology,Taiyuan 030024,China;5.Xiaxian Seismic Station,Earthquake Administration of Shanxi Province,Xiaxian 044000,Shanxi,China
Abstract:
In order to explore the new seismic monitoring technology and method of underground fluid,fault gas concentrations of hydrogen have been carried out at the piedmont fault zone of Zhongtiao Mountain. Through the experiment of observation positions,gas collection devices and sampling depths,we proposed fault gas observation methods of online automatic trace hydrogen analyzer. The comparative tests were done on the stability and suitable conditions of the instrument in the field environment,and the hydrogen concentrations at different measuring points of the same fault were observed. The results showed that it is feasible to carry out hydrogen concentration observation in a fault zone continuously. We suggested that the method in this study could be a useful tool for setting observation points,choosing the reasonable observation depth and scientific analysis of the observed data.
Key words:  The piedmont fault zone of Zhongtiao Mountain  Fault gas  The concentration of hydrogen  Continuous observation  New technique of the earthquake monitoring