狭长区域内120m钢筋混凝土烟囱控制爆破拆除
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摘要
在狭长区域内实施高烟囱定向爆破拆除,必须解决精确定向和落地冲击问题。本文结合峨眉铝业集团120m钢筋混凝土烟囱的爆破拆除,介绍了出灰口、后坐和偏心等几个重要问题的处理,提出了控制定向精度的方法和工艺手段。文中还介绍了爆破缺口参数的计算、震动安全距离的校核以及作者的体会。
The problems of touchdown impact vibration and directional precision must be solved when a chimney with a height of 120 meters in a long and narrow area is demolished by directional blasting.In the light of blasting demolition of a reinforced concrete chimney with a height of 120 meters in the Emei Aluminum Factory,the tackle of several important problems such as soot door,recoil and eccentricity is introduced and the method and technological measures for control of directional precision are proposed.In addition,the calculation of blasting cut's parameters,check of safe vibration distance and the experience of authors are presented.
The problems of touchdown impact vibration and directional precision must be solved when a chimney with a height of 120 meters in a long and narrow area is demolished by directional blasting.In the light of blasting demolition of a reinforced concrete chimney with a height of 120 meters in the Emei Aluminum Factory,the tackle of several important problems such as soot door,recoil and eccentricity is introduced and the method and technological measures for control of directional precision are proposed.In addition,the calculation of blasting cut's parameters,check of safe vibration distance and the experience of authors are presented.
引文
〔1〕刘殿中 工程爆破实用手册[M] 北京:冶金工业出版社,1999
〔2〕周家汉,杨人光,庞维泰.建筑物拆除爆破塌落造成的地面振动[A].土岩爆破文集(第二集)[C].北京:冶金工业出版社,1985.
〔3〕王海亮.铁道工程爆破[M].北京:中国铁道出版社,2001.
〔2〕周家汉,杨人光,庞维泰.建筑物拆除爆破塌落造成的地面振动[A].土岩爆破文集(第二集)[C].北京:冶金工业出版社,1985.
〔3〕王海亮.铁道工程爆破[M].北京:中国铁道出版社,2001.
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