综合物探技术在路基病害探查中的应用

Application of Integrated Geophysical Prospecting Technology in Subgrade Disease Detection

为了快速准确地查明路基病害的状况及成因,通过综合利用地质雷达、瞬态瑞雷波法、高密度激电法三种物探方法,发挥各自的优势,地质雷达能够精确检测道砟层厚度变化,瞬态瑞雷波法能够查明路基本体的软硬分布情况,高密度激电法勘探深度大,病害细节反映精准。在复杂工区联合应用这三种方法由浅入深、准确地揭示路基现状及病害,为类似复杂困难路基病害探查工点提供了典型实例。

In order to quickly and accurately check the conditions and the causes of subgrade disease,through the application of the three geophysical methods,namely,ground penetrating radar( GPR),transient Rayleigh wave method,high density induced polarization( IP) method,GPR can accurately check the thickness variation of railway ballast,the transient Rayleigh wave method can ascertain the distribution of soft and hard subgrade,the high density IP method can detect deeply and accurately show the details. Combined with the superiorities of the three methods,the subgrade disease and the condition in complex area can be accurately detected step by step. It can provide typical case for detecting subgrade disease in complex and difficult area.