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为比较2种电阻率法污染场地探测装置——温纳和偶极装置的抗噪声性能,基于点电流源电场分布原理进行理论推导,研究了理想均匀半空间的理论电位取值,并在重庆一废弃化工厂进行实际场地探测比较.结果表明,采用相同极距的2种探测装置,温纳装置采集的信号强度为偶极装置的3倍以上,具有更强的在抗噪声性能.在实际探测中,温纳装置仅有0.28%的数据由于数据质量较差被移除,而偶极装置的这一数据占12.10%,可见温纳装置比偶极装置具有更好的抗噪声性能.因此,在实际污染场地探测中,如果场地的噪声干扰严重,应优先选择采用温纳装置进行探测.
In order to compare the anti-noise performance of two kinds of resistivity detection devices - Wenna and dipole devices, the theoretical derivation based on the electric field distribution theory of point current source was carried out and the theoretical potential value of the ideal half-space was studied. An abandoned chemical plant was compared with the actual field detection.The results show that the use of the same pole pitch of the two detection devices, the temperature signal acquisition device for dipole device more than 3 times, with a stronger anti-noise performance in the actual In the detection, only 0.28% of the data in the WENA unit was removed due to poor data quality, while the data for the dipole unit accounted for 12.10%, showing that the WENA unit has better noise immunity than the dipole unit. , In the actual detection of contaminated sites, if the site noise serious interference, priority should be given to the use of WENA device to detect.