Parameter reliability research of explosive JWL equation based on numerical simulation
CHEN Chuanjin
XIA Fangshun
XU Jiajun
Abstract：In order to improve the accuracy of the numerical simulation of the crack area radius of rock mass blasting, the rock mass calculation model considering the strain rate effect was established by using explicit dynamics software. The rock blasting process of thirteen kinds of explosives is simulated, and the radius of the crack area is analyzed. The results show that the ratio of the radius of the crack area to the charge radius obtained by the calculation model is 46. 8, which is consistent with the results of previous studies and shows that the calculation simulation is reliable; The parameters of the four explosives, such as three grade water gel explosives and anti freeze water glue explosives, are unreliable and not suitable for use. However, the parameters of the nine explosives, such as TNT, emulsion explosives and No. 2 rock emulsion explosives are reliable, and their parameters can be referenced in the study.
Keywords：Numerical simulationCharge radiusRadius of blasting crack zoneJWL equation
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 75-80 )