120 m高钢筋混凝土烟囱拆除爆破与数值模拟研究  

Study on blasting demolition and numerical simulation of a 120 m high reinforced concrete chimney

作　　者：胡葵 柴亚博 罗宁 张浩浩 刘玉华 HU Kui;CHAI Ya-bo;LUO Ning;ZHANG Hao-hao;LIU Yu-hua(Beijing Anlian Guoke Safety Assessment Co.,Ltd.,Beijing 101312,China;College of Safety Science and Engineering,Liaoning Technical University,Fuxin 123000,Liaoning,China;School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,Jiangsu,China;Public Security Brigade of Henan Provincial Public Security Department,Zhengzhou 450003,China)

机构地区：[1]北京安联国科科技咨询有限公司,北京101312 [2]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [3]中国矿业大学力学与土木工程学院,江苏徐州221116 [4]河南省公安厅治安总队,郑州450003

出　　处：《工程爆破》2024年第3期62-68,共7页Engineering Blasting

基　　金：国家自然科学基金资助项目(12072363;12372373);中国矿业大学教学研究重点基金资助项目(2022DLZD01)。

摘　　要：为成功爆破拆除一座120 m高钢筋混凝土烟囱,根据实际工程环境、工程结构特点完成爆破方案的设计,并运用有限元软件LS-DYNA进行了的爆破设计的合理性验证。结果表明:数值模拟倒塌过程与实际倒塌过程高度一致,烟囱的倒塌过程持续10.5 s左右,在倒塌过程中烟囱筒体主要经历切口闭合、下坐、触地倒塌3个阶段,不同阶段运动规律特征明显。爆破方案整体合理,钢筋混凝土烟囱被成功拆除爆破,达到预期效果,对于相似工程实践具有指导意义。In order to successfully demolish a 120 m high reinforced concrete chimney by blasting,the design of blasting scheme was completed according to the actual engineering environment and engineering structure characteristics,and the rationality of blasting design was verified by finite element software LS-DYNA.The results show that the collapse process of the numerical simulation is highly consistent with the actual collapse process.The collapse process of the chimney lasts about 10.5 s.During the collapse process,the chimney cylinder mainly undergoes three stages:incision closure,sit-down and touchdown collapse,and the motion characteristics of different stages are obvious.The overall blasting scheme is reasonable,and the reinforced concrete chimney is successfully demolished by blasting,which achieves the expected effect and has guiding significance for similar engineering practice.

关 键 词：钢筋混凝土烟囱 拆除爆破 爆破设计 数值模拟 

分 类 号：TD235[矿业工程—矿井建设]