中国矿山工程

In order to study the damage effect and accurately obtain the disturbance of drift advancement blasting on surrounding rock, sonic wave test method is used in this paper to detect the surrounding rock damage in the process of drift advancement blasting. According to the results of the sonic wave test, the parameters that can effectively reflect the characteristics of damage are extracted, and the blasting sound velocity and blasting damage results are calculated according to the formula, so as to directly reflect the surrounding rock damage. Based on the ultrasonic test of the blasting using ordinary explosive cartridge and cutting seam cartridge, the sound velocity changes in the charging section and the plugging section are obtained, according to which the damage of blasting to the surrounding rock is obtained.