以贵阳发电厂240m高钢筋混凝土烟囱爆破拆除为例,介绍了城市复杂环境下烟囱控制爆破拆除过程中采取的减震措施。实践证明:采用微差爆破技术,开设定向窗和卸荷槽,开挖减震沟和铺设缓冲垫层,可有效降低烟囱爆破倒塌触地时的震动及其传播,减震效果可达到70%。 Taking the demolition of a 240 m high reinforced concrete chimney in Guiyang Power Plant as an example, the damping measures adopted in the process of demolition of the chimney by controlled blasting in a complicated urban environment are introduced. Practice has proved that the use of micro-blasting technology to set up directional windows and unloading trenches, dredging ditch excavation and the laying of cushion layer can effectively reduce the chimney bursts collapse and touchdown vibration and its propagation, the damping effect can reach 70% .