Abstract
AbstractThe geological conditions in tunnel construction are unpredictable. However, unfavorable geological conditions such as fault fracture zones, weak surrounding rocks, and karst caves often appear during the construction process (especially in the karst areas of southwest China). Rush construction is very easy to cause landslides, water inrush, and other unfavorable geological diseases, especially in karst and fault fracture zone areas with high incidence and high risk of water inrush, which is a major key problem in tunnel construction. Therefore, more and more experts, scholars, and technicians pay attention to advanced water exploration in tunnel. The advanced geological prediction of tunnel geological structure has been described in detail in Chap. 3. The advanced geological prediction methods widely used in the detection of the hidden water hazards of the surrounding rock in tunnel include the ground penetrating radar method and the electrical method. High-density resistivity method is the most commonly used method. The author and his team have improved the high-density resistivity method in terms of power supply, cables, and terrain correction, forming a set of high-power electrical sounding 3D imaging technology suitable for deep buried long tunnels.
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