【摘要】 采用定向倾倒控制爆破技术成功地拆除了发电厂内复杂环境下的2座高度为55 m、底部直径为50 m的冷却塔。详细介绍了主要爆破参数的计算和选取,以及爆破安全性的分析。爆破效果表明:对于高大建筑物的定向爆破,保留部分支撑力的大小直接影响到产生后坐效应的程度和倒塌距离大小,同时也表明,长宽比接近的高大薄壁结构体倾倒后会获得较好的解体效果和较小的倒塌范围。更多还原

【Abstract】 Two cooling towers with 55 meters in height and 50 meters in diameter in the complicated circumstances of a power plant were demolished by directional blasting.The main blasting parameters and analysis of blasting safety were introduced in the paper.According to the results of blasting practice,the backlash effect and the toppled distance were directly connected with the proportion of supported force of remain part for the directional blasting of high building structure,and it is proved that excellently demolition results and shorter collapsed dimension were obtained when the structure with high thin wall and smaller rate of height and width was demolished by directional collapsing.更多还原