乌什地震台DSQ水管倾斜仪资料干扰初步分析

对DSQ水管倾斜仪近2年的资料进行了初步分析,总结了现阶段影响DSQ水管倾斜仪资料的干扰因素。微气流及大风对水管倾斜仪存在较大干扰,造成数据曲线有较多的毛刺、台阶和抖动,但不会改变固体潮总体变化形态,采用细沙、苯板填埋堵塞电缆沟的方法后干扰有所减少。伸缩仪的检修工作、仪器自身工作状态不正常、人为进山洞也会对水管倾斜仪产生干扰。突然停电会对水管仪数据造成台阶状干扰;雷雨天气、气压突变会造成水管仪资料数据曲线发生畸变。

PRELIMINARY ANALYSIS ON INFLUENCE OF DSQ TILTMETER OBSERVATION DATA IN WUSHI SEISMIC STATION

The author analyzed the observation data of DSQ tihmeter in recent 2 years preliminarily, summarized main interference factors influencing DSQ tiltmeter. The result showed that micro air flow and gale could affect water tube tiltmeter obviously, cause burrs, steps and wobble, but could not change the general shape of solid tide, the above inference may reduce after filling or stuffing the cable ditch with silver sand or EPS Planks; the troubleshooting for extensometer, abnormal working state of DSQ tiltmeter, artificial entering the observation cave affected the observation data quality of DSQ tiltmeter;sudden power cut could cause 1 step in the observation; thunderstorm,sudden atmospheric pressure change could affect the data seriously and make the observation curves distortion.