【摘要】 介绍了1座高55 m,烟囱地坪处外径为4.1 m,内径为1.1 m,地坪以上3 m处外直径为4 m,内径为3 m的砖混烟囱的定向控制爆破拆除。根据烟囱本身的结构特点将烟囱爆破切口底部提高到地坪以上+3.0 m处,采用内部钻孔的方法进行爆破施工,取得了较好的爆破效果。更多还原

【Abstract】 The directional explosive demolition of a chimney with 55 m high and the external diameter of chimney floor 4.1 m with internal diameter 1.1 m is introduced,which the external diameter above the floor 4 m is 3 m and the internal diameter is 3 m.According to structural characteristics of the chimney,the blast cut is raised +3.0 m above the chimney floor,and the blastholes were drilled from inner,then the blast result is better.更多还原