影响砖砌烟囱定向爆破倒塌偏向因素的分析  

ANALYSIS ON THE FACTORS OF AFFECTING DEFLECTION OF COLLAPSING DIRECTION OF BRICK CHIMNEY TO BE BLASTED

作　　者：宗琦[1] 

机构地区：[1]安徽理工大学,安徽淮南232001

出　　处：《工程爆破》2003年第4期18-20,共3页Engineering Blasting

摘　　要：采用定向倾倒爆破法拆除砖砌烟囱是一种最安全、最有效的方法,然而,爆破实践中时常发生倾倒过程中偏向。根据多年来定向倒塌爆破拆除砖砌烟囱的实践经验,对有可能影响倾倒过程中偏向的因素进行了综合分析,并提出相应的对策,如合理选定切口的位置和尺寸、开设定向窗、预处理耐火砖内衬、对称分段微差起爆等。It is the most safe and effective method to adopt directional collapsing in the demolition of brick chimney by blasting.However,the deflection of collapsing direction often occurs in the course of collapsing in the practice of blasting.Based on the practical experience in demolition of brick chimney by directional blasting over many years,possible affecting factors on the deflection of collapsing direction are analyzed and the corresponding countermeasures are put forward,such as reasonably selecting the position and size of blasting cuts,opening directional windows,pre-treating refractory brick liner and adopting symmetrically-sectioning millisecond blasting.

关 键 词：砖砌烟囱 定向爆破 倒向控制 定向窗 

分 类 号：TU746.5[建筑科学—建筑技术科学]