对复杂环境下3座塔形框架结构景观房进行一次控制爆破拆除。鉴于塔形(六角形)框架结构高宽比小、稳定性高、倒塌难度大的特点，重点采取增加倒塌方向长轴上支撑立柱的爆破高度的方法，整体形成梯形爆破切口。通过确定爆破拆除方案和预拆除处理方案，选择合理的爆破参数和切口高度，采用可靠的防护措施，使它们沿着倒塌方向分段延时倒塌落地，降低了爆破振动，控制了飞石，爆破效果良好，达到了预期效果。%A controlled blasting demolition of three landscape rooms with turriform frame construction in complicated environment was introduced. For the turriform (hexagonal) frame construction with high stability, the ratio of height to width is too small to collapse. It focused on the burst attitude of the frame on symmetric axis in collapse direction. Through blasting plan and the pre-treatment measures, the proper blasting parameters and cut heights were determined. By adopting safe protection measures, the three constructers collapsed in different directions and times, vibration was reduced, and the flying rocks were controlled. The blasting demolition achieves good and the desired results.
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