数字化流体观测资料干扰因素分析

对甘肃地区数字化流体观测资料的干扰因素进行了系统的分析。通过对观测资料的分析,发现影响因素大部分是仪器故障引起的,人为因素很少。水位、水温主要有仪器故障及性能影响、电压瞬间不稳(或遭雷击)干扰、无效数据、人为干扰、多个测项影响、数采器故障、传输、原因不明、观测环境干扰等。气氡(气汞)脱气一集气装置的好坏,对数字化气体观测起决定性作用,此外,闪烁室被污染、气路堵塞、漏气等可能引起显著的干扰,还有仪器性能不稳、电压不稳、人为因素等;另外,汞灯或光电倍增管老化、补汞管老化、抽气泵老化、抽气不稳定、泵膜老化、轴套磨损、室内有污染或仪器内气路被污染、抽取饱和蒸汽体积不标准都可能引起观测值的不正常变化。

Analysis of the Interference Factors in Digital Fluid Observation Data

In this paper the interference factors of digital fluid observation data in Gansu province were systematically analyzed. According to analyzing the observation data, we found that the majority of interference factors were caused by equipment failures, rarely by human factors. The data of water level and water temperature were mainly disturbed by the equipment failure, voltage transient instability (or struck by lightning), invalid data, and so on. The quality of degasser-extractor devices of gas radon (gas mercury) played a decisive role in digital gas observation. Besides, contamination of scintillation chamber, gas circuit''s blockage or leakage, as well as instability performance of Instrument, voltage instability and human factors, may cause notable interference. Some other factors can also cause abnormal changes of observed value.