山东数字化钻孔体应变观测的干扰异常分析  

Analysis on the Disturbances which Cause Undulately Change in Observation Data of Digital Borehole Volume Strainmeter

作　　者：卢双苓 于庆民 曲保安 冯志军[2] 李杰[2] 

机构地区：[1]山东泰安基准地震台,山东泰安271000 [2]山东省地震局,山东济南250014

出　　处：《西北地震学报》2010年第2期186-190,共5页Northwestern Seismological Journal

基　　金："十一五"科技支撑项目(2006BAC01B03-03-04);国家质量监督检验检疫总局行业专项项目(2007GYB092)

摘　　要：在系统分析山东钻孔体应变与辅助观测资料的基础上,结合台站工作日志对引起钻孔体应变观测曲线出现波动性短时异常变化的干扰因素进行了分析讨论,结果表明:钻孔体应变的短时波动性变化主要为气压、降雨、地下水位、施工和电源等的干扰影响;这些干扰影响不能通过相关分析完全剔除,需定量与具体情况定性相结合分析;气压、降雨和地下水位的影响程度与钻孔地质条件密切相关,有破碎带的钻孔受干扰影响相对较大。Based on the systemic analysis on observation data of borehole volume strainmeter with work logs,the disturbances which caused the undulate short abnormal change in digital borehole volume strainmeter observation are analyzed.The result shows that the short undulate changes of borehole volume strain were caused by mainly air pressure、rainfall、water level change、construction and electrical source.These cannot be absolutely eliminated by correlated analysis,so the quantitative analysis should be combined with qualitative analysis for concrete condition.The disturbance extent of these factors is related to the geological condition of borehole.The influences of air pressure rainfall and water level are bigger commonly at the boreholes in which exist shatter belt.

关 键 词：山东 钻孔体应变 数字化观测资料 干扰 

分 类 号：P315.727[天文地球—地震学]