Application of high-density electrical technique in karst detection

With the wide development of karst in limestone areas, ground subsidence occurs easily, this is the main hidden danger of geological disaster in road、bridges and buildings etc.High-density electrical technique is a recently introduced geophysical exploration method, and widely used in geological disaster and engineering survey.In the limestone areas, high-density electrical technique can detect Quaternary holes, limestone karst, fracture development and obtain good effect.