湘祁二线船闸复杂环境定向拆除爆破技术实践  

Technical practice of directional demolition blasting of Xiangqi second-line shiplock in the complex surroundings

作　　者：周灿 段元振 方桂富[2] ZHOU Can;DUAN Yuan-zhen;FANG Gui-fu(Hunan Provincial Water Transportation Construction&Investment Group Co.,Ltd.,Changsha 410011,China;Base Division of Zhengzhou Air Defense Academy,Zhengzhou 450007,China)

机构地区：[1]湖南省水运建设投资集团有限公司,长沙410011 [2]郑州防空兵学院基础部,郑州450007

出　　处：《工程爆破》2022年第3期70-76,共7页Engineering Blasting

摘　　要：为消除湘祁二线船闸复杂环境下既有建筑拆除对周边环境的影响,确保运行船闸及周边设施安全,针对被拆对象的工程特性,从爆破原理出发,通过重难点分析和关键技术选择,制定了定向拆除爆破的施工技术方案和参数设计,并成功地指导了工程实践。结果表明:定向拆除爆破施工中,采用三角形切口能满足良好的倒塌效果,减振沟等有效地控制了塌落振动,对类似项目具有一定的参考价值。In order to eliminate the impact of existing buildings demolition on the surroundings under the complex environment of Xiangqi second line shiplock and ensure the safety of the shiplock and surrounding facilities,the construction technical scheme and design parameters of directional demolition blasting are formulated by analyzing the difficult points and selecting the key technologies based on the engineering characteristics of the buildings to be demolished and the blasting principle,and the engineering practice is successfully guided.The results show that the triangular cutting can meet the good collapse effect in directional blasting demolition,and the vibration damping ditch can effectively control the collapse vibration,which has a certain reference value for similar projects.

关 键 词：二线船闸 拆除爆破 爆破切口 振速预测 爆破参数 

分 类 号：TD235[矿业工程—矿井建设]