ACCURATE EXPLORATION OF KARST GEOLOGY BASED ON THE LAND SONAR METHOD

Abstract

Karst has a high degree of uncertainty in the actual development process, mainly affected by geological topographic, high-voltage line interference, the depth of exploration and other factors. The geophysical methods of exploration commonly used have difficulty in detecting the size and the location of the caverns accurately and the drilling method are limited due to the economic reasons if performed extensively. The land sonar method is a minimal seismic-extractive elastic wave reflection method. Due to its automatically exciting features and receiving ultra-wideband reflected waves, it has been an effective method for exploring karst geology. It has natural advantages in probing karst caves and can detect the karst caves with accurate exploration with a diameter of ≥ 0.5m. By comparing the results of drilling, wall imaging and high-density electrical methods, we can verify the accuracy of this method.