关键词: 爆破方案, 中深孔爆破, 质点振动速度, 数值模拟

Abstract: In order to reduce the effect of blasting during the production on surrounding environments as much as possible and control the negative effect of blast vibration，the method of fixed-point observation was used to monitor the production and blasting in the area between explosion and Hejia village.Based on the site monitoring data，the blasting process e in the mining area was dynamically simulated by the numerical software（ANSYS/LS-DYNA) to represent the blasting situation in the blasting area.Meanwhile，the vibration velocity near the houses under different bench explosion schemes was predicted，obtaining that the maximum speed of blasting particle in the vertical direction was 3.64 mm/s and 5.82 mm/s respectively.Taking the value lower than that in the Safety regulations for blasting practices as a basis，and through contrasting and analysis，schemes of the bench explosion in the mining area were optimized and the maximum number of blast holes at the same level increased to 2 was determined as the reasonable bench explosion scheme.All these provide the references for controlling vibration strength in blasting.

Key words: Blasting program, Medium-deep hole blasting, Particle vibration velocity, Numerical simulation