基于高密度电法的潮汐作用对潍坊滨海地下水影响分析

The application of high density resistivity method to analysis the impact of tide on water table fluctuation in coastal aquifer

本文利用高密度电法连续监测数据,基于统计学方法对潍坊滨海典型海水入侵区地层电阻率随潮汐作用的时空动态变化进行研究,结果表明:在地层沉积均匀的滨海地区,无论单次测量还是重复测量,地层电阻率值只在垂直方向上具有显著差异性。潜水面附近地层电阻率受潮汐影响最为明显,因此,利用高密度电法连续测量的方法分析滨海地区地下水随潮汐作用时空变化的方法是可行的。

Application the repeated measurement data of high- density resistivity method,the paper discusses the laws of formation resistivity change with tidal wave in north part coastal area of Weifang city. The results showed that,in homogeneous ground,formation resistivity value has significant difference only in vertical direction under both single and repeated measurement. Formation resistivity is obviously affected by tides in coastal area. Chang e in formation resistivity near the water table is most obvious with the tidal,so using continuous repeated measurements data of high density resistivity method to analysis the changes of formation resistivity with tidal wave in coastal area is feasible.