摘要
介绍了复杂环境下47.1m高楼定向拆除爆破的工程实例。结合待爆楼房结构特点和周围环境制定了爆破方案。对前厅墙体、立柱和2～4层楼梯、电梯进行局部预拆除,采用三角形爆破切口和＂大把抓＂与四通结合的复式交叉爆破网路,并通过采用延时起爆技术、铺设沙袋以及开挖减振沟等措施,显著降低了爆破振动和塌落振动,取得了理想的爆破效果,可为此类复杂环境下的高楼拆除爆破提供参考。
The engineering example of demolition blasting of a 47. lm high frame building under compli- cated environment was introduced. The blasting scheme was made based on the structural characteristics of buildings and the surrounding environment. The wall of antechamber, columns and 2 ～ 4 flights of stairs and elevators were removed before blasting, the triangular cut was designed , and the “large packing” combined with four way pipe were used to establish the double cross blasting network. Through the delay blasting technology, laying sandbags and damping ditch excavation and so on, the blasting vibration and collapse vibration were significantly reduced, and the ideal blasting effect was achieved. It provided a ref- erence for buildings demolition blasting under complicated environment.
出处
《工程爆破》
北大核心
2014年第3期13-15,49,共4页
Engineering Blasting
关键词
复杂环境
拆除爆破
安全防护
Complicated environment
Demolition blasting
Safety protection
