定向爆破拆除砖结构烟囱

Demolition of brick chimney by directional blasting

对烟囱爆破参数的设计进行了说明，对内衬进行裸炮处理和烟囱出灰口不在倾倒中心线上时的加固措施。

In this paper,the design of chimney blasting parameters are described.The exposed charges on the internal layer are dealed with andindicate the streng then measure while the ashes exit onn the chimneyis not on the lean centre line.