工程爆破

2004, (04) 31-34

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80m高钢筋混凝土烟囱定向爆破倾倒可靠性校核
CHECKUP OF COLLAPSING RELIABILITY ON DEMOLITION OF A RC CHIMNEY WITH A HEIGHT OF 80 METERS BY DIRECTIONAL BLASTING

范磊,龙源,齐世福
FAN Lei,LONG Yuan,QI Shi-fu(EIEC,PLA University of science and Technology,Nanjing 210007,China)

摘要(Abstract):

采用梯形爆破切口的定向爆破成功地拆除了一座 80m高的钢筋混凝土烟囱。按照烟囱的结构和实际受力状态 ,根据同类工程的经验 ,设计了爆破切口的参数 ,并验证了烟囱倾倒的可靠性。同时 ,介绍了切口的钻孔爆破参数以及防飞石和飞溅物的措施。此外 ,对爆破震动和触地震动的安全性进行了校核。
By directional blasting with trapezoidal cut,a reinforced concrete chimney with a height of 80 meters was successfully demolished.According to chimney structure and actual stressing state,and on the basis of the experience from similar projects,the parameters of blasting cut were designed and the reliability of chimney collapsing was examined.At the same time,the parameters for drilling-and-blasting of cut and the safety measures for prevent of flying rocks and spatters were introduced.In addition,the checkup of the safety on blasting and touchdown vibrations was carried out.

关键词(KeyWords): 烟囱;定向爆破;倾倒可靠性校核;安全措施
Chimney; Directional blasting; Checkup of collapsing reliability; Safety precautions

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作者(Author): 范磊,龙源,齐世福
FAN Lei,LONG Yuan,QI Shi-fu(EIEC,PLA University of science and Technology,Nanjing 210007,China)

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