郑桂初,王友新,段丽环,汪惠真,杨云天,林峰,谢裕柱
ZHENG Gui-chu,WANG You-xin,DUAN Li-huan,WANG Hui-zhen,YANG Yun-tian,LIN Feng,XIE Yu-zhu

• 1:广东中人集团建设有限公司

摘要(Abstract)：

为了安全、顺利地拆除复杂环境下的高耸烟囱,采用根部开设正梯形爆破切口的定向控制爆破技术予以拆除。在分析烟囱高度、结构尺寸等特点的基础上,设计了爆破切口参数,同时采用导爆管雷管组成的分段延时起爆网路,并采取在倒塌方向上砌筑多道减振土堤、铺设柔性缓冲层、开挖减振沟等安全措施来减小爆破振动。结果表明:爆破振动未对周边保护目标造成影响,此次拆除爆破工作安全、可靠,达到预期目的,可为类似工程提供参考。
In order to remove the towering chimney in a complex environment safely and smoothly, this blasting is carried out by the directional control blasting technology with a positive trapezoidal blasting gap opened at the root. Based on the analysis of the characteristics of chimney height and structure size, the parameters of blasting cut are designed. At the same time, the detonator is used to form a staged delay initiation network. In the direction of collapse, the safety measures such as building multiple anti vibration earth dikes, laying flexible buffer layer and excavating anti vibration ditch are taken to reduce the blasting vibration. The results show that the blasting vibration has no impact on the surrounding protection targets, and the demolition blasting work is safe and reliable, which has achieved the expected purpose and provide a reference for similar projects.

关键词(KeyWords)： 烟囱;定向爆破;爆破参数;起爆网路;安全措施
chimney;directional blasting;blasting parameters;detonation network;safety measures

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 郑桂初,王友新,段丽环,汪惠真,杨云天,林峰,谢裕柱
ZHENG Gui-chu,WANG You-xin,DUAN Li-huan,WANG Hui-zhen,YANG Yun-tian,LIN Feng,XIE Yu-zhu

参考文献(References)：

• [1] 李玉岐,谢康和,焦永斌,等.砖烟囱爆破切口形状对切角和切口高度的影响分析[J].爆破,2004,21(1):47-50.LI Y Q,XIE K H,JIAO Y B,et al.Analysis of the influence of the shape of the blasting cut onthe cut angle and height of the brick chimney[J].Blasting,2004,21(1):47-50.
• [2] 汪旭光.爆破设计与施工[M].北京:冶金工业出版社,2011.WANG X G.Blasting design and construction[M].Beiing:Metallurgical Industry Press,2011.
• [3] 夏卫国,武双章,唐勇.新海电厂210 m高钢筋混凝土烟囱爆破拆除[J].工程爆破,2011,17(1):58-60.XIA W G,WU S Z,TANG Y.Blasting demolition of the 210 m high reinforced concrete chimney in Xinhai power plant [J].Engineering Blasting,2011,17(1):58-60.
• [4] 余兴春,任少华,赵端豪,等.210 m高钢筋陶泥混凝土内衬结构烟囱的爆破拆除[J].工程爆破,2017,23(3):73-76.YU X C,REN S H,ZHAO D H,et al.Blasting demolition of 210m high chimney with reinforced clay concrete lining structure[J].Engineering Blasting,2017,23(3):73-76.
• [5] 洪卫良.120 m高钢筋混凝土烟囱爆破拆除[J].工程爆破,2018,24(2):66-70.HONG W L.Blasting demolition of a 120 m-high reinforced concrete chimney[J].Engineering Blasting,2018,24(2):66-70.
• [6] 赵文,李玉景,张宝亮,等.复杂环境下80 m高危裂缝钢混烟囱爆破拆除[J].工程爆破,2018,24(2):77-82.ZHAO W,LI Y J,ZHANG B L,et al.Blasting demolition of 80 meter steel concrete chimney with seriously cracked under complex conditions[J].Engineering Blasting,2018,24(2):77-82.
• [7] 贺五一,杨志旭,吴建源,等.锦州电厂240 m高钢筋混凝土烟囱爆破拆除[J].爆破,2013,30(4):87-90.HE W Y,YANG Z X,WU J Y,et al.Blasting demolition of 240 m high reinforced concrete chimney in Jinzhou power plant[J].Blasting,2013,30(4):87-90.
• [8] 国家安全生产监督管理.爆破安全规程:GB 6722-2014[S].北京:中国标准出版社,2015.State Administration of Work Safety.Safety regulations for blasting:GB 6722-2014[S].Beijing:China Standards Press,2015.文章编号:1006-7051(2019)06-0061-05