Influence of homogeneous discontinuous medium on the propagation law of explosion shock wave pressure

The change of the propagation medium continuity on the explosion site surface will directly lead to the shock wave pressure propagation and attenuation law change. Therefore, studying the impact of homogeneous non-continuous media in the test field on the propagation of shock wave pressure is of great significance for accurately obtaining the shock wave pressure. In this study, the finite element numerical simulation model of the propagation law of shock wave pressure in the acoustic–solid structure coupled explosion field was established by using the multiphysical field coupling software, and the simulation analysis and research were carried out on the width of homogeneous discontinuous medium to the shock wave pressure propagation and distribution law. Through the numerical simulation results analysis, it is found that the homogeneous discontinuous medium width will directly affect the explosion shock wave pressure distribution. When the homogeneous discontinuous medium is sandstone, the sandstone width exceeds 1500 mm, which will directly affect the shock wave pressure test results at subsequent measuring points. Therefore, it is necessary to ensure that the homogeneous discontinuous medium width is less than 1500 mm during the actual explosion field shock wave pressure test, so as to ensure the shock wave pressure test data reliability at the subsequent test points. This study provides a theoretical support for the explosion field shock wave pressure testing site standardized design.