Study on the Propagation Law of Shock Wave Pressure in the Tunnel

As a typical underground fortification, tunnels are one of the key targets of an explosive warhead. The study of the propagation law of shock wave pressure in the tunnel is of great significance to accurately evaluate the explosive power of ammunition. The mathematical model of the propagation law of shock wave pressure in the tunnel is established by carrying out the explosion test of the warhead under different test conditions based on dimensional analysis and combined with the experimental data. And the effectiveness of the mathematical model is verified by making the explosion test of the warhead in the tunnel, and the result shows that the maximum relative deviation between the measured value and the calculated value of the shock wave overpressure peak is 10.61%. Therefore, it is proved that the mathematical model can be used to predict the shock wave overpressure peak in the tunnel and provide some reference for the power evaluation of warhead explosion in the tunnel.