Study on the Dynamic Model for Deep Hard Rock near the Blasting Cavity
Basing on the LS-DYNA9703D’s user’s material coding platform, the user-subroutine is coded, and simulates the dynamic behaviors of the coupled-charge rock caused by the spherical charge blasting when the rock mass is surrounded by high confining pressure. The simulated results and related experimental results are compared. The results show that the modified C.C.Grigorian model agrees with the similar test and is suitable for the calculations on the cavity surrounded by high confining pressure, and swelling of the blasting cavity is significantly restricted and relative cavity’s radius and ratio of rock mass’s strength and confining pressure is nearly linear.
Dongye Sun, Wen-Pei Sung and Ran Chen
J. Li et al., "Study on the Dynamic Model for Deep Hard Rock near the Blasting Cavity", Applied Mechanics and Materials, Vols. 71-78, pp. 3779-3784, 2011