外装置系统改造前后嘉山台地电阻率数据质量对比探究

Comparative Study on the Quality of Resistivity Data of Jiashan Station Before and After the External Device System Transformation

该文简要介绍了嘉山台地电阻率外装置系统改造工作。通过整理归纳改造前后的观测数据,采取对比日变化曲线特征、月精度值大小等方式方法,分析改造后的数据质量是否得到优化,以此来对改造效能进行评价。对比分析发现,嘉山台在外装置系统改造后,日变特征并无显著差异,但是通过计算,月观测精度相对于改造前数值变小。并发现改造后两测道均方差值在某些特定时段差异性较大,推断出该台地电阻率观测受南京地铁3号线干扰。通过以上探究,得知此次改造观测数据质量相对有所提升,但是受到相关不可控因素的制约,数据质量还有较大的提升空间。

The paper introduces the reconstruction of the external device system of the ground resistivity of Jiashan station.After the transformation,the observation data are summarized and compared with the characteristics of daily variation curve and the size of monthly accuracy value.The data quality after the transformation is optimized is analyzed to evaluate the efficiency of the transformation.The comparison analysis shows that the characteristics of daily variation are not significantly different after the external device system is reformed.However,through calculation,the monthly observation accuracy is smaller than that before the transformation.It is found that the mean square deviation of the two channels is different in some specific periods after the transformation.It is concluded that the earth resistivity observation of our station is disturbed by Nanjing Metro Line 3.Through the above research,we know that the quality of the reconstructed observation data has been improved relatively,but restricted by the relevant uncontrollable factors,the data quality still has a larger space to improve.