(江西理工大学 赣州  341000)
［提要］给出了确定烟囱等细杆高耸建筑物控制爆破拆除方案的原则，并以高80m的钢筋混凝土烟囱的成功定向倒塌爆破拆除为例，详细介绍了爆破切口形状、切口的圆周和切口高度的确定方法，爆破参数、爆破网路设计以及确保准确定向倒塌所采取的技术措施等。
［关键词］ 钢筋混凝土烟囱 倒塌方案 切口范围 定向窗 定位口
Practice of Demolishing a 80mhigh Reinforced Concrete Chimney by Directional Controlled Blashing/Jiao Yongbin，Gao Saihong，Lu Zhexiang，Peng Minjie(Jiangxi University of Science and Technology, Ganzhou 341000,China)
Abstract:The definite principle which controlls the demolition backout project of the chimney is introduced, and taking the 80m high reinforced concrete chimney which was successfully directional collapse demolition backout as example, the detail of how to insure the demolition margin shape, the margin perimeter and the margin height，as well as the demolition parameter, the demolition network designs and the technical to insure the accurate direction collapses are introduced.
Keywords:reinforced concrete chimney； collapse programme； incision scope； direc
tional window; positioning gap