何理,钟冬望,操鹏,马建军,黄雄
HE Li,ZHONG Dong-wang,CAO Peng,MA Jian-jun,HUANG Xiong

• 1:武汉科技大学理学院
• 2:武汉铁四院控制爆破技术有限公司

摘要(Abstract)：

随着城市建设的快速发展,地下空间的高效利用受到广泛关注,而深基坑钢筋混凝土支撑梁的安全、高效拆除是工程建设的关键环节。为此,提出一种沿支撑梁轴向、垂直向同时预制炮孔的多向协同布孔技术及其装药方法,并将其应用于某深基坑支撑梁爆破拆除项目。应用结果表明,在传统垂直向布孔方式基础上,同时布置轴向弧形炮孔;借助牵引装置在轴向孔内敷设导爆索,采用空气间隔装药结构并进行分区延时爆破,可有效降低爆破危害效应,提高爆破作业安全性与拆除效率,改善爆破拆除效果,研究成果可为类似爆破拆除工程提供借鉴。
With the rapid development of urban construction,efficient use of underground space attract widespread attention,safe and efficient removal of support beams is the key link in the construction of the project.The synergy arrangement technology of blastholes through prefabricating axial holes and vertical holes at the same time and its charging method were proposed,which was applied to the engineering practice of support beam blast demolition.Application results showed that axial arc blastholes were arranged on the basis of traditional vertical blastholes.And detonating cord was laid in the axial hole by using traction device.The air-deck charge structure and partition delay blasting were carried out in the engineering.The blasting damage effect was reduced the removal efficiency and safety of blasting demolition were enhanced,and the effect of blasting demolition was improved effectively.The research results can provide a reference for similar blasting demolition project.

关键词(KeyWords)： 支撑梁;深基坑;爆破拆除;多向协同布孔法;空气间隔装药;拆除效果
support beam;deep foundation pit;blast demolition;multi-directional synergy arrangement of blasthole;air-deck charge;demolition effect

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51574184);; 湖北省教育厅科学技术研究资助项目(Q20161101);; 武汉科技大学青年科技骨干培育计划资助项目(2016xz018)

作者(Author): 何理,钟冬望,操鹏,马建军,黄雄
HE Li,ZHONG Dong-wang,CAO Peng,MA Jian-jun,HUANG Xiong

参考文献(References)：

• [1]张春丽,段卫东.复杂环境下深基坑支护梁爆破拆除[J].工程爆破,2014,20(4):19-22.ZHANG C L,DUAN W D.Blasting demolition for a deep foundation pit support beam under complicated environment[J].Engineering Blasting,2014,20(4):19-22.
• [2]刘翼魏,挺峰.广州新电视塔基坑支撑梁爆破拆除[J].爆破,2009,26(4):62-65.LIU Y W,TING F.Explosive demolition of foundation pit support beam of Guangzhou new television tower[J].Blasting,2009,26(4):62-65.
• [3]赵坤.软土深基坑钢筋混凝土支撑围护系统拆除爆破理论与实践[D].上海:同济大学,2008.ZHAO K.The demolition theory and practice of the reinforced concrete support system of soft earth deep foundation pit[D].Shanghai:Tongji University,2008.
• [4]张兆龙.复杂环境下基坑支撑梁爆破拆除[J].爆破,2015,32(4):94-98.ZHANG Z L.Explosive demolition of foundation pit support beams under complex environment[J].Blasting,2015,32(4):94-98.
• [5]韩体飞,颜事龙,胡坤伦,等.淤泥质黏土条件下高层大厦基坑支撑爆破拆除[J].爆破,2009,26(4):66-69.HAN T F,YAN S L,HU K L,et al.Explosive demolition of pit supporting of building on muchy clay condition[J].Blasting,2009,26(4):66-69.
• [6]陈三定.深基坑支撑爆破拆除对周围建筑物稳定性的影响研究[D].淮南:安徽理工大学,2009.CHEN S D.The impact of the blasting demolition on the stability of surrounding buildings is studied[D].Huainan:Anhui University of Science and Technology,2009.
• [7]温尊礼,顾月兵,韩文红.基坑围护钢筋混凝土支撑精确爆破拆除[J].探矿工程,2015,42(3):80-84.WEN Z L,GU Y B,HAN W H.Accurate blasting demotion of reinforced concrete support for foundation pit enclosure[J].Exploration Engineering,2015,42(3):80-84.
• [8]赵坤,蒋昭镳.预埋炮孔法在钢筋混凝土支撑爆破拆除中的应用研究[J].爆破2005,22(2):82-83,99.ZHAO K,JIANG Z B.Application of blasting demolition of shot preplugged hole in the reinforced concrete braces[J].Blasting,2005,22(2):82-83,99.
• [9]叶建军,程大春,明军.基坑钢筋混凝土临时支撑梁绿色拆除爆破技术[J].爆破,2017,34(1):101-107.YE J J,CHENG D C,MING J.Green explosive demolition of temporary reinforced concrete pit-supporting beams[J].Blasting,2017,34(1):101-107.
• [10]邓兰艳,彭文,周谢萍,等.深基坑桁架式钢混内支撑梁的微差爆破拆除施工技术[J].建筑施工,2014(11):1 217-1 218.DENG L Y,PENG W,ZHOU X P,et al.Construction technology of differential blasting demolition of truss type steel-concrete support beams in deep foundation pit[J].Building Construction,2014(11):1 217-1 218.
• [11]汪旭光,郑炳旭,张正忠,等.爆破手册[M].北京:冶金工业出版社,2010:738.WANG X G,ZHENG B X,ZHANG Z Z,et al.Handbook of blasting[M].Beijing:Metallurgical Industry Press,2010:738.