电解极化渗流传感器极化特性研究

Study on polarization characteristics of electrolytic polarization seepage sensor

针对岩土体渗流原位监测的需求,介绍了一种利用电解极化进行示踪测量的传感器基本原理和制作方法。提出了传感器极化性能测试方法,通过实验研究了传感器的极化特性及其对示踪源的影响,优化了电解电压和电解时间。结果表明:在极化达到稳态前,示踪源的强度随电解电压和电解时间的增加而增加,示踪源的位置随电解时间的增加而变化;在极化达到稳态后,示踪源的强度达到最大,且强度和位置均不随电解电压和电解时间的变化而变化,最佳的电解电压为9 V,电解时间为4 s。

Considering requirement of in-situ monitoring for seepage flow, principle and fabrication method of sensor using electrolytic polarization for tracing measurement is introduced. A test method for polarization performance of sensor is proposed, polarization characteristics of sensor and its influence on tracing source is studied with experiments, the electrolysis voltage and electrolysis time are optimized. Results show that before the polarization reaches a steady state,intensity of tracing source increases with increasing of electrolytic voltage and electrolysis time,location of tracing source changes with increasing of electrolysis time;after polarization reaches a steady state, intensity of tracing source reaches the maximum and intensity and location are not changed with change of electrolytic voltage and electrolysis time, the optimum electrolysis voltage is 9 V, electrolysis time is 4 s.