Research Advances in Propagation Regularities and Control Technologies of Air Blast Waves Induced by Tunnel Drilling and Blasting

The air shock wave generated by tunnel blasting will not only endanger the safety of workers and construction machinery in the tunnel, but also affect the stability of surrounding rock and lining structure. Reasonable control of the generation and propagation of air shock wave is important to ensure the safety of tunnel blasting construction. This article summarizes the research progress on the propagation regularities, harmful effects, prediction methods, and control measures of air shock waves in tunnel blasting in recent years, focusing on the propagation law and control technology of tunnel drilling and blasting shock waves. Several representative air shock wave overpressure prediction formulas were selected, the prediction accuracy of different formulas under different blasting conditions was calculated, and the applicable conditions of different formulas were analyzed. The research trend of tunnel air shock wave is prospected from the aspects of tunnel air shock wave overpressure prediction method, air shock wave evolution law research and air shock wave active prevention and control device.