钢筋砼烟囱定向爆破拆除技术刘宏刚，张俊兵（铁三局科技处）新华化工厂在改建过程中，需拆除一座高５４ｍ的钢筋砼烟囱，因无法用人工拆除，决定采用定向控制爆破技术拆除。１工程概况１．１周围环境（见图１所示）１．２工程情况１．２．１工程数量烟囱高５４ｍ，底部外... Directional Blasting Demolition Technology of Reinforced Concrete Chimney Liu Honggang, Zhang Junbing (Bureau of Science and Technology, Third Bureau of Iron and Steel Technology) During the reconstruction of Xinhua Chemical Plant, a reinforced concrete chimney of 54m in height needs to be demolished. Due to the inability to remove it manually, it is decided to demolish it by directional control blasting technology. 1 Project Overview 1.1 The surrounding environment (see Figure 1) 1.2 Project Situation 1.2.1 The number of projects Chimney height 54m, the bottom of the outer ...