复杂环境下同时爆破拆除热电厂厂房和150m烟囱  

Explosive Demolition of Workshop and 150 m High Chimney under Complicated Conditions

作　　者：邹宗山[1,2] 杨军[1,2] 佐建君 何成龙[1] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081 [2]北京理工北阳爆破工程技术有限责任公司,北京100081

出　　处：《爆破》2016年第2期97-101,共5页Blasting

摘　　要：响应国家的节能减排的号召,某热电厂需要同时爆破拆除50 000 m2的大型多跨厂房和150 m烟囱。爆破作业环境复杂,建构筑物倒塌空间有限,通过厂房双向折叠、并与烟囱相向倾倒的倒塌方案,控制爆破倒塌范围不超过20 m。采用孔内半秒延时与孔外毫秒延时相结合的双闭合复式起爆网路,既满足厂房双向折叠定向倾倒方案多段别延时起爆需要,又确保起爆网路的安全性和可靠性。利用厂房爆后废墟、缓冲沟及减振沟相结合的综合降振技术,实现降低爆破振动的影响。安全高效地完成了此项拆除爆破工程,大大的缩短了工程工期,节约了工程成本。In order to protect the surroundings and to hasten the construction period and save the project cost,the workshop and chimney need explosive demolition simultaneously. The technology of bidirectional folding of the workshop was put forward to collapse faced to the chimney collapse direction. The initiation system was designed combined with ＂ half-second delay inside blastholes＂ and ＂ millisecond delay outside blastholes＂. Additionally,vibration reduction scheme was performed by using of the blasting ruins,buffer ditch and damping ditch,which kept the the demolition blasting work safe and efficient enough.

关 键 词：厂房 烟囱 爆破拆除 起爆网路 振动控制 

分 类 号：TU746.5[建筑科学—建筑技术科学]