Author:
Pengyi Li,Yunzhe Liu,Shiying Tang,Qiang Lu,Kaikai Li,Ao Li
Abstract
Abstract
The incident wave pressure acting on the wall of the spherical charge in the rock and soil is an important factor affecting the size of the explosion cavity, and the pressure of the incident wave is related to the impedance of both the explosive and the rock and soil. In this paper, based on the quasi-static model of explosive spherical charge in rock and soil, the impact impedance was introduced to calculate the size of explosion cavity in rock and soil medium. Through the field underground explosion experiment, it is found that the calculation result of the impact impedance model is 6.15% higher than the original model, and the influence rule of several geotechnical medium parameters on the cavity size was also analyzed.
Subject
General Physics and Astronomy
Reference15 articles.
1. A Quasistatic Model of a Confined Explosion of a Concentrated Charge in a Bed and in a Block;Chernikov;Journal of Mining Science,1990
2. A prediction model for amplitude-frequency characteristics of blast-induced seismic waves;Yu;Geophysical Prospecting,2017
3. Calculation method for characteristic size of blasting cavity of finite length cylindrical charges in soil;Li;Explosion and Shock Waves,2019