It is helpful for understanding reaction zone and equation of state(EOS) of reactant to study divergent detonation and grazing detonation driving abilities. TATB based explosive and HMX based explosive were investigated with bigplate experiment and numerical simulation. Results show that for the larger radius of velocity interferometer system for any reflector(VISAR) probe,the higher final flyer velocity,implying more effective charge. Obtained JWL(Jones-Wilkins-Lee) parameters can reproduce the cylinder test results quite well. It can be concluded that VISAR method is effective for initial acceleration moment,and for the later movement period,both VISAR and smear photograph technique data can be used for the determination of detonation product EOS at cylinder test.