地铁爆破施工对建筑物振动影响预测

Predication of the Effect of Vibration on Buildings Caused by Explosive Operation in Course of Subway Construction

结合某地铁工程环境影响评价,采用理论分析、公式计算、类比验证等方法,重点研究城市地铁爆破施工作业时,对不同距离处建筑物振动的影响程度。预测结果表明,当药包重量为20Kg时,距爆破点40 m外的建筑物将不会受到爆破振动影响。如果距爆破点40 m范围内有建筑物存在,则应减小药包重量,以保证建筑物的安全。

By use of theoretical analysis, formula calculation and related proving calculation, this paper studies mainly the effect of vibration on buildings from vary distances, caused by explosion process in course of subway construction. The predication results show that the building would not suffer vibration effect caused by explosion process , if the distance between the building and explosion point is 40meter and the weight of explosive is 20kg. If there is any building existed with 40 meter from the explosion point. In order to prove the building is safe from the explosive operation, the weight of explosive used should be reduced.