三方向近距离有保护物的楼房爆破拆除技术

Demolition Blasting Technology for a Building with Close-range Existing Facilities in Three Directions

摘要:

广东省郁南县华新选矿厂拟爆破拆除的楼房，除倾倒方向外其余3个方向近距离均有保护设施或试验性保留的建筑，周围环境十分复杂。设计采取了单向倾倒∠形爆破切口，合理的爆破参数设计，可靠的爆破网路，严密的防护结构，恰当的切口支承柱切筋技术处理等一系列爆破与安全技术措施，精细化施工管理，确保了楼房向设定的方向精确爆破倒塌，而且基本不发生后坐，将建筑物的爆破塌散范围控制在安全范围内。同时，严格控制好爆破振动、爆破飞石、空气冲击波等有害效应，实现了楼房爆破拆除的成功。

Abstract:

A building with complicated surrounding environment was planned to be demolition blasted, except for the toppling direction, around it are close-range existing facilities or experimental reserved buildings in three directions. A series of blasting and safety technical measures of unidirectional dumping with∠ shaped blasting cut, rational blasting parameters, reliable blasting network, rigorous protective structure, appropriate reinforced steel cutting technology at supporting column were taken in the design with meticulous construction management to ensure precise designed collapse direction in a safe range without recoil. At the same time, the harmful effects of blasting vibration, blasting slungshot and air shock wave were strictly controlled.