摘要
爆破拆除烟囱时,巨大的爆炸力会不会引起烟囱反向倒塌?这是人们所担心的问题。就此问题本文从最不利的情况出发,按容器中气体逸散理论求出爆炸力在抛掷阶段的作用时间然后利用刚体转动理论公式导出烟囱反向旋转的最大转角ф_(max),通过实例计算作了探讨。
How great is the possibility of the reverse collapse of a chimney when it is demolished by explosion?It is a big concern. But here by first figuring out the time length of the action of the explosive force at the stage of burst according to the theory of gas dissipation from the container and then using the turning theory of the rigid body,a chimney's greatest reverse turning angle,ф'max,is calculated.It is drawn from practical examples and from the point of the most unfavourable conditions.
