THE ANALYSIS OF DISTURBANCE PERIOD OF CONTINUOUS OBSERVATION DATA OF ROCK STRAIN

The influence of long term disturbance can be eliminated, by analysis of disturbance period of continuous dynamic observation data of rock volumetric strain. After further eliminating the change of earth tide, we can make statistics of noise level and detect short term anomolous information of volumetric strain. By adopting relevant measures and analysising predominant disturbance period, it will be of benefit to improving the quality of observation data.