大直径双曲线钢筋混凝土冷却塔爆破拆除  

Blasting demolition of large diameter and hyperbolic reinforced concrete cooling tower

作　　者：张学东[1] 张学峰 李正[1] 沈古成[1] 

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]中煤第五建设有限公司第四十九工程处,河北邯郸056003

出　　处：《河北工程大学学报（自然科学版）》2010年第3期107-109,112,共4页Journal of Hebei University of Engineering:Natural Science Edition

摘　　要：针对冷却塔重心低、高细比小、壁薄的结构特点,选择合理的爆破切口形式、高度、角度等爆破参数,采用"开窗口、断钢筋、预留支撑板块"的方法,对某大直径双曲线钢筋混凝土冷却塔进行爆破拆除;对爆破产生的飞石、爆破塌落振动、碎碴飞溅等问题进行安全性分析并制定了具体的安全措施。冷却塔起爆后按设计方向倒塌,爆破效果良好,为类似爆破工程提供参考。According to the characteristics of cooling tower such as the low gravity centre,small height-slenderness ratio and thin wall,the main parameters of blasting were designed including the cut＇s shape,height,and angle.A large diameter and hyperbolic reinforced concrete cooling tower were demolished by the way of hole-opening,steelbar-breaking and staff-reserving.The safety analysis of the flying stones from the blasting,vibration of the collapse blasting,and splashing of the crushed slag etc were conducted,and specific security measures were made.The result showed that the cooling tower collapsed in the designed direction after blasting,which provided reference for similar engineering design.

关 键 词：大直径双曲线冷却塔 定向爆破 爆破切口 安全措施 

分 类 号：TU746.5[建筑科学—建筑技术科学]