洞体形变数字化观测干扰分析

Analysis of disturbance of digital cavity deformation observation

对山东省洞体形变数字化观测资料的干扰进行了分析讨论。分析认为：①山东省泰安，马陵山和烟台3个台形变观测资料的主要干扰是气象因子变化，观测环境变化和仪器故障；②气压，大风，降雨是导致观测资料出现异常变化的主要因素；气压的短周期突变可导致固体潮曲线畸变，大风引起固体潮曲线出现毛刺；降雨导致观测曲线趋势变化；③马陵山地震台垂直摆倾斜仪NS向能够清晰记录到附近地区塌方，爆破和小震引起的弹性形变波；④供电系统，传感器和数采器故障是导致观测数据丢失的最主要原因。

In this paper, disturbance in cavity deformation observation data in Shandong Province are analyzed and discussed. The result shows that. （1） The main disturbance of deformation observation data in Taian, Malingshan and Yantai Seismic Stations come from meteorological elements change, observation environment change and instrument bugs; （2）Air pressure, strong wind and rainfall are the main factors that make observation data change abnormally. Short period change of air pressure can lead to aberrance of solid tide curve. Strong wind makes solid tide curve burrs. Rainfall brings about trend changes of observation curve; （3） Vertical pendulum tiltmeter （NS） in Malingshan Seismic Station can clearly record the elastic deformation waves caused by nearby mudslide, explosion and weak earthquake; （4）The most reason for observation data losing comes from power system, sensor and data collector breakdown.