防止烟囱、水塔爆破倾倒时后座现象的技术

Prevention of Backmow Phenomena Resulted from Chimney and Water Tower Toppling Down by Blasting

引起烟囱水塔等细高型建筑物爆破倾倒时的后座现象有两大因素，即爆破切口长度和切口形状。并在控爆实践中提出了有效防止后座现象的确定方法和计算公式。

The backblow phenomena occurring in column type structures such as chimney,warer tower,etc,while toppling down by blasting results from two major factors一blast slot length and its shape,Themethod and calculation formula are proposed for effective preventon of the backblow phenomena through con-trolled blasting practice.