Steady-state detonation velocities and wave shapes were measured for JB-9014 rate sticks at the temperature 24 ℃,with diameters of 10,12.5,15,30 mm respectively. Wave shape data were fit with an analytic form,by which the normal velocity D_n(κ) was calculated. The data confirm that the local normal wave velocity D_n depends only on the local total curvature κ for small κ,but it varies with both curvature and explosive diameter in the case of big κ.