关键词: 综采工作面, 顶板预裂爆破, 爆破振动, 临近村庄

Abstract: In order to weaken the hard roof, reduce the severity of the roof pressure, and ensure the safety of the mining process, the method of blasting and crushing is used to artificially destroy the integrity of the roof. The peak value of the vibration velocity generated by the blasting is calculated by the first theoretical calculation. Then the numerical simulation software ansys/ls-dyna is used to establish the physical model to simulate the whole process of the roof blasting and blasting, and the vibration of all the blasting observation points is extracted. The peak value and the theoretical calculation value are comprehensively analyzed and compared, and combined with the blasting vibration safety allowable standard value, the peak vibration velocity from the nearest measurement point of the residential area does not exceed the safety allowable value, and the conclusion of the safety of the neighboring Feng villagers is not affected. Furthermore, combined with engineering experience, the final conclusion that the blasting operation according to the designed roof pre-split blasting scheme will not have a significant impact on the safety of Shangfeng villagers' residence is obtained.