摘要
In order to explore the new technology and methods for seismic underground fluid observation,a test study on measurement of hydrogen concentration in fault gas is carried out at the piedmont fault zone of Zhongtiao Mountain. Through the experiment on observation positions,gas collection devices and sampling depths,the paper presents the observation method for fault gas hydrogen concentration by using an online automatic trace hydrogen analyzer. Comparative tests are conducted on the stability and optimum conditions of this type of instrument in the field environment, and the hydrogen concentrations at different measuring points of the same fault are observed. The results show that it is technically feasible to carry out continuous hydrogen concentration on a fault zone. The method proposed in this study could be a useful tool for setting the observation points,choosing a reasonable observation depth and scientific analysis of the observed data.
In order to explore the new technology and methods for seismic underground fluid observation, a test study on measurement of hydrogen concentration in fault gas is carried out at the piedmont fault zone of Zhongtiao Mountain. Through the experiment on observation positions, gas collection devices and sampling depths, the paper presents the observation method for fault gas hydrogen concentration by using an online automatic trace hydrogen analyzer. Comparative tests are conducted on the stability and optimum conditions of this type of instrument in the field environment, and the hydrogen concentrations at different measuring points of the same fault are observed. The results show that it is technically feasible to carry out continuous hydrogen concentration on a fault zone. The method proposed in this study could be a useful tool for setting the observation points, choosing a reasonable observation depth and scientific analysis of the observed data.
基金
funded by the Earthquake Science and Technology Spark Program(XH12006)
the Seismological Research Project of China(201208009)
关键词
氢气浓度
观测方法
故障
实验
山前断裂带
地下流体观测
测量试验
采样深度
The piedmont fault zone of Zhongtiao Mountain
Fault gas
Theconcentration of hydrogen
Continuous observation
New technique forseismic monitoring
