合肥地震台钻孔体应变干扰分析

Analysis on the interference about borehole strain data at Hefei Seismic Station

分析合肥地震台钻孔体应变观测资料干扰因素及特征,发现水位和气压等因素对TJ-Ⅱ型钻孔应变仪影响显著。在该地震台观测优化改造期间,钻孔体应变受到临近钻孔灌水的影响,而降雨和灌水导致的水位变化,对体应变干扰程度不同。

Through the analysis of bore-hole body strain of interference and features at Hefei Seismic Station, it is found that the water level and atmospheric pressure had a great effect on the TJ- Ⅱ component bore-hole body strain. During the optimization and transformation of Hefei Seismic station,it was affected by watering on the near borehole. The degree of inference on body strain by watering and rainfall is different.