中文摘要：

在坑道直流电阻率法探测中,由于受坑道及坑道内各种工程设施的影响,其电阻率异常会发生严重畸变,增加了资料解释难度甚至造成错误的解释。根据物理模拟的相似性原则,设计了模型试验以研究坑道环境的影响：在土槽中挖一空腔作为坑道,用钢筋和低阻球体代替轨道及施工机械,旁侧异常体设计为低阻铜球和高阻空腔。结果表明,坑道环境对电阻率测量存在影响,坑道直流电阻率实测数据解释前必需消除其影响。经用差值法、比值法和综合改正方法对实测数据进行改正,并对比改正前后数据的2.5维反演结果,这3种方法都能很好的消除坑道环境影响。

英文摘要：

The tunnel direct current（DC） resistivity method is important in geological engineering and deposit prospecting.With a variety of engineering facilities in tunnel,serious distortion occurs in the resistivity anomaly,which will increase the difficulty of data interpretation and even cause erroneous interpretation.According to the principle of physical simulation of similarity,a model test is designed for tunnel environment survey.A cavity is used as a tunnel in the soil bin,rail and construction machine are replaced by steel and low resistivity sphere separately.Low resistivity copper sphere and high resistivity cavity are regarded as side abnormal bodies.The results show that tunnel environment influences measurement.Therefore,the influence should be eliminated before data interpretation.The different method,ratio method and integrated correction method are useful to eliminate influence.Compared with 2.5D inversion results of measured data,the inversion results of corrected data in the three methods are in good accordance with actual condition.