The Abnormal Characteristics of Apparent Resistivity in Direct Current Electric Methods on Artificial Cavity

According to the practical geological conditions, different arrays can be chosen for detecting underground artificial cavity. The structure message of the cavity can be obtained roundly by the comprehensive contrasting of the results. In this paper, we take one subterranean artificial cavity as an example. By using different arrays, comprehensive contrasting the abnormal characteristics and results, the effectiveness of the DC methods in detecting underground artificial cavity is demonstrated.