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本文通过较大型水槽实验,给出均匀无限半空间介质条件下,界面附近低阻线状不均匀体对视电阻率ρs测值影响的空间(平面)分布规律,以及不均匀体自身参数改变对ρs的影响规律。同时给出了同种不均匀体不同介质条件下的ρs对比观测结果。 在此基础上分析了地电阻率台站不同台址条件对同种低阻干扰反映程度的差异。给出与实验条件相当的地电台址下水管等干扰的定性、定量结果以及最大可能影响范围(Δρs/ρs<5‰为限)。
In this paper, we give the spatial (plane) distribution of the low resistivity linear heterogeneous body near the interface under the condition of uniform and infinite half-space medium through a large-scale tank experiment, and change the self-parameter of the inhomogeneous body ρs the impact of laws. At the same time, the same observed results of ρs under different media conditions were given. Based on the analysis, the differences of the same low-impedance interference reflected by different sites of earth resistivity station are analyzed. The qualitative and quantitative results and the maximum possible influence range (Δρs / ρs <5 ‰ for the case) of the interference of water pipes under the geoelectric station at the same experimental conditions are given.