观测深度对断层气(氡、汞)测量的影响

INFLUENCE OF DEPTH ON THE MEASUREMENT OF FRACTURE GASES ( Rn AND Hg )

本文根据武山实验点1m、3m、5m三个深度的断层气Rn、Hg时值资料采用多元逐步回归分析方法,深入讨论了断层气测量中的干扰因素,重点研究了深度对断层气Rn、Hg测量的影响。结果表明:随着深度的增加,气象因素对断层气Rn、Hg测量的干扰减小,测量的可靠性提高;从Rn、Hg在垂直方向上的分布看,断层气Hg随着观测深度的增加含量增高,Rn的含量主要受岩性控制,与深度关系不密切。

In this paper,based on the Radon and Mercury's hourly values of fracture gases from the depths of 1 meter, .3 meters and 5 meters in Wushan test station, the authors analyzed the interference factors in observation of fracture gases by applying the stepwise multile regeression method, especially studied the influence of the depth on the Radon and Mercury observation of fracture gasea.The results show that the interference of meteological fractors to the measurements of the fracture gases (Radon and Mercury) decreases with the increase of depth and the reliability of measurements is improved.From the vertical distribution of Rn and Hg, authors found that the Hg content in the fracture gases increases with the depth and the content of Rn shows nothing to do with the depth. It is mainly controlled by the lithology of the country rocks.