【摘要】 基于对5口流体观测井使用的3种数字化水位仪的校测对比实验及与气温、气压、供电交流电压等因素的相关性分析,对数字化水位仪的零漂特征及影响因素进行了研究,结果表明:1水位仪的零漂变化呈非线性的特征,每种水位仪、甚至每台水位仪的零漂变动规律均不完全相同,相比较而言,SWY-1A型水位仪的零漂变动更平稳,变幅较小;2水位仪零漂与气温、气压和供电交流电压的相关系数较低,基本可以排除气温、气压和电源电压对水位仪零漂的影响;3水位仪零漂源于探头,主要受探头老化等因素的影响。探头安装时对探头线测量的精准度、探头线因重力作用的拉长、调整探头埋深时对探头线测量的精准度以及水位校测的人为误差等,往往会导致零漂计算结果上的偏差;4数字化水位观测应定期、规范化地进行水位校测并根据零漂变化对观测数据予以校正,以确保观测数据真实、可靠,能更好地发挥地震预测效能。更多还原

【Abstract】 The correlation of 3 kinds of experimental dual digital water level meter used in 5 fluid observation wells calibration based on digital water level meter zero drift characteristics are analyzed,the results show that: 1 Water level zero drift change is nonlinear,each kind of instrument,even each instrument zero drift changes reguler are not the same,the SWY- 1A type water level gauge zero drift changes more smoothly,and smaller amplitude; 2 The correlation coefficient of gauge zero drift and temperature,pressure and power supply voltage are lower,the influence of temperature,pressure,power supply voltage and zero drift of the water level meter are excluded; 3The water level meter zero drift due to the influence of probe,the main reason for the probe by aging and other factors. Probe installed on line probe measurement accuracy,a probe line because of the gravity of the elongated,adjust the probe depth measured on line probe measurement accuracy and level of School of human error,often resulting in zero drift calculation results of deviation; 4The digital water level observation should be regularly,specification of water level calibration and the data corrected and ensure the true and reliable data,to better play to the earthquake prediction performance.更多还原