Near Field Modeling of the Explosion Waveforms and the Key Contributing Factors

For modeling the blast wave, first its Green function must be solved. Therefore, we use the Green function solution of explosive source by Herman (1979). Study area, was located around the gas pipes in high-speed rail project Qom – Isfahan, with the longitude of the 50.5 to 51 degrees north and the latitude of the 33.5 to 34.5 degrees east. In this study, was used the number of four-digit seismograph machine type CMG-6TD. Sort seismograph machines around the blast site in such a way that the three-component seismic energy radiation patterns of blast were recorded in the vertical, radial and transverse. A condition that has a component (the radial component) was placed in the site of the explosion; also the distance between two consecutive samples was determined at a digitize of 10 milliseconds.