Experimental method and apparatus for the propagation law of one-dimensional explosive stress waves
YU Haoran
CHEN Jun
ZHU Rui
YI Hui
YANG Renshu
Abstract：The drilling and blasting method plays a crucial role in engineering construction in China.To better control rock fragmentation and understand the impact of explosive gases dur-ing rock bursting and crushing,this study proposes an experimental method and device for in-vestigating the propagation law of one-dimensional explosive stress waves in media.The sys-tem comprises three primary components:an explosive loading device,a strain acquisition sys-tem,and a high-speed photography apparatus.Red sandstone specimens were prepared in the form of long rods,and experiments were conducted to verify the feasibility of the proposed method and system.The results indicate that the experimental method and system can effec-tively simulate the propagation process of explosive stress waves in media under explosive load-ing conditions,minimizing the influence of local effects caused by the loading method.This approach is simple and can accommodate various explosion constraint forms.Under identical explosive quantities and different boundary conditions,the explosive stress wave propagates u-niformly along the long side of the specimen at four times its radius,forming a one-dimension-al explosive stress wave.Under the same explosive stress wave effect,stronger constraints on the media specimen result in greater involvement of explosive gases in the rock fragmentation process.
Keywords：one-dimensional stress waveexplosion loadconstraint conditionsexplosive gas
Publication Date：2025-03-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 448-457 )