厚壁砖结构烟囱爆破拆除  

Some Experience about Thick Wall Brick Chimney Blasting Demolition

作　　者：磨季云[1] 周运奎 金沐 段卫东[1] 

机构地区：[1]武汉科技大学理学院,武汉430081 [2]中原爆破工程有限公司,武汉430061 [3]中铁港航局集团爆破工程公司,广州510660

出　　处：《爆破》2012年第2期87-90,共4页Blasting

摘　　要：结合工程实例,说明了厚壁砖结构烟囱爆破时,为了定向准确,爆破缺口稍大于1/2即可,此时,烟囱倒塌过程一般不会发生后坐、下坐现象。为使砖烟囱壁爆体充分破碎,炸药单耗取值应该在1000 g/m3左右,不宜太小。采用双层建筑钢网,用铁丝扎紧可以严密防止烟囱爆破飞石。Combined with a real blasting engineering, a thick wall brick chimneys are blasted is demolished by. To control the collapsing direction accurately, the burst gap was set as a little more than half of the chimneys girth. In case of chimney collapsing, the phenomenon of recoiling and squatting will not occur to ensure the fully broken, the explosive factor should be in 1000 g/m3 or so,which cant be too small. Use double layer construction steel nets were used to prevent flying rock in the process of chimneys blasting demolition.

关 键 词：厚壁烟囱 定向爆破 炸药单耗 震动控制 

分 类 号：TU746.5[建筑科学—建筑技术科学]