Study of Interaction between Shock Wave and Surface in the Excavation Roadway during Gas Explosion

The physical model of shock wave propagation in the tube during gas explosion is set up in this paper. Using the Conservation Law of mass, momentum, energy in the form of Euler and equation of the thermodynamics, the interaction between the shock wave and the wall surface of the excavation roadway during the gas explosion is discussed. Theoretically, the parameters of the wave front in the normal and oblique reflection of shock wave are deduced. Meanwhile, some computational and simplified formula are given in this paper.