摘要
杭钢60 m钢砼烟囱的爆破拆除,因其为单层布筋,竖筋粗,且布筋密度高,而成为本次爆破的难点。为确保爆破的成功,选择了合适部位进行试爆。根据试爆情况分析,确定合理炸药单耗及单孔药量。同时,在确保烟囱结构稳定的情况下,增加了对钢筋网的预处理、预切割内容。爆破结果表明,该措施是可行,且必要的。
The explosive demolition of 60 m high reinforced concrete chimney in Hangzhou iron and steel group eompany was very difficult because of its single steel layer with coarse vertical and high density steels. It is very nee- essary to test in reasonable point for the success of blasting. The reasonable specific charge and the charge amount each hole can be detemined by analysising test blasting. Meantime, the pretreatment and pre - cut to steel network are added under ensuring the stability of the chimney structure. The result show that above measures are feasible and necessary.
出处
《爆破》
CSCD
北大核心
2011年第4期63-65,72,共4页
Blasting
关键词
钢砼烟囱
爆破缺口
预处理
定向窗
reinforced concrete chimney
blast cut
pretreatment
directional window
