摘要
介绍了电厂100 m高钢筋混凝土烟囱的无后坐定向爆破,取相对偏小的爆破切口对应圆心角,提高支撑强度,防止后坐;同时预先割断爆破时支撑部位的受拉钢筋,减小烟囱倾倒的抵抗力矩,确保烟囱的失稳倾倒。
The directional blasting of 100-meter reinforced concrete chimney without backlash is introduced. The angle of blasting cutting is smaller than usual to improve the strength of supporting when blasting and avoid backlash, while the steel bar in the pulled region are cut partly before ignition, to reduce the moment resisting dumping of chimney and insure the off-balance of the chimney.
出处
《爆破》
CSCD
2008年第4期56-58,76,共4页
Blasting
关键词
拆除爆破
定向爆破
烟囱
后坐
demolition blasting
directional blasting
chimney
backlash
