大礼堂分体定向倒塌爆破拆除

待拆的钢筋混凝土框架结构大礼堂纵向比横向长度大,高宽比较小,且梁柱截面较大,墙体较厚,如何确保爆破安全使其整体定向倒塌且充分解体,具有一定难度。本文论述了爆破方案的选择,预处理,分体式爆破的炮孔布置及孔网参数,起爆网路设计以及所采取的爆破安全措施。爆破效果非常理想。

DIRECTIONAL BLASTING DEMOLITION OF GRAND AUDITORIUM

The auditorium to be demolished was a frame-structured building of reinforced concrete.With its length in vertical orientation greater than that in landscape orientation,the ratio of height over width being low,relative greater section of the pillars and beams,and relative thick wall,the demolition of this building became difficult in view of directional collapsing it completely with safety.The present paper discussed the blasting plan,pretreatment,separately blasting with its borehole layout and net parameters,the design of detonation nets and the measures taken in the blasting.The demolition was quite successful one.