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介绍了近年来在水、工、环物探领域中兴起的高密度电阻率成像法的基本原理，并针对铁路路基病害及铁路路基具有带状结构的特点，开展了高密度电阻率成像技术的研究与应用，提出了在电极总数不变情况下进行连续滚动扫描测量任意长剖面的观测方式，编制了相应的数据处理软件，进行了典型路基病害的有限元数值模拟与成像对比实验及大量现场实测试验。开挖验证结果表明，该技术能有效地探测铁路路基病害。
This paper introduces the basic principle of high density resistivity imaging which is emerging in the field of water, engineering and geophysical prospecting in recent years. It also studies the high density resistivity imaging technology in view of the disease of railway subgrade and the belt structure of railway subgrade. And put forward the method of continuous rolling scanning measurement of arbitrary long section under the same total number of electrodes. The corresponding data processing software was compiled, the finite element numerical simulation and imaging comparison experiment of typical subgrade defects and a large number of field measurements test. Excavation verification results show that the technology can effectively detect the railway subgrade disease.