约束条件下聚能装置对乳化炸药引爆距离影响的研究  

Study on Influence of Fusion Device on Detonation Distance of Emulsion Explosives under Constraint Conditions

作　　者：刘忠磊 王旭华[2] 王应魁[2] 李中辉 梁龙 孙永 田成林[1] 王涛[1] 王旭[1] LIU Zhong-lei;WANG Xu-hua;WANG Ying-kui;LI Zhong-hui;LIANG Long;SUN Yong;TIAN Cheng-lin;WANG Tao;WANG Xu(School of Resources,Shandong University of Science and Technology,Tai′an 271000,China;China Railway 14th Bureau Group Co.,Ji′nan 250000,China)

机构地区：[1]山东科技大学资源学院,泰安271000 [2]中铁十四局集团有限公司,济南250000

出　　处：《爆破》2024年第3期171-178,共8页Blasting

基　　金：国家自然科学基金资助项目(52278359);煤矿灾害动力学与控制国家重点实验室开放基金资助项目(2011DA105287-FW202203);青岛市博士后资助项目(QDBSH20230202074);泰安市科技创新发展项目(政策引导类)(2022GX089)。

摘　　要：为研究“聚能装置+乳化炸药”在隧道光面爆破中实现周边孔空气间隔装药的可行性以及聚能装置对炸药引爆距离的改良效果,在高原某地区开展了实地试验。采用无缝钢管模拟隧道周边孔进行两节及多节“乳化炸药+聚能装置”的引爆及2#岩石乳化炸药的殉爆试验研究,通过多组实验得出最大稳定引爆及殉爆距离。试验结果表明:在无缝钢管内,长度15 cm的聚能炸药和2#岩石乳化炸药的最大稳定引爆和殉爆距离分别为230 cm和115 cm,多节聚能炸药最大稳定引爆距离达到80 cm。由于聚能装置对爆轰波的径向约束作用,同时前端的圆锥形金属药型罩爆炸所形成的聚能射流大大增加了轴向上的冲击波能量,使得乳化炸药在无缝钢管中的引爆距离显著增加,应用于隧道周边孔可代替导爆索实现空气间隔装药,增强光面爆破效果,节约成本节省时间。Field tests in a region of the plateau were carried out to study the“poly device+emulsion explosives”in tunnel surface blasting and to achieve the feasibility of peripheral hole air spacing charge and poly device on the explosives detonation distance.A seamless steel tube was used to simulate the tunnel peripheral hole for two or more sections of“emulsion explosives+poly device”detonation.A martyrdom test was implemented with#2 rock emulsion explosives.The maximum stable detonation and martyrdom distance were obtained through several groups of experiments.The test results show that the maximum stable detonation and martyrdom distance 15 cm length of polymerized explosives and#2 rock emulsion explosives are respectively 230 cm and 115 cm in the seamless steel tube.The maximum stable detonation distance of multi-section polymerized explosives can reach 80 cm.Due to the radial constraints on the detonation wave of the polymerization device,the front end of the conical metal drug mask explosion formed by the polymerization of energy jets significantly increases the axial and upward shockwave energy,which makes it possible to increase the energy of the shockwave.The emulsion explosives in seamless steel pipe detonation distance increased significantly upward shock wave energy,which can be applied to the tunnel perimeter hole,replacing the detonating cord to achieve air spacing charge and enhance the effect of surface blasting,cost savings,and time savings.

关 键 词：光面爆破 聚能装置 引爆距离 无缝钢管 聚能射流 

分 类 号：TD235.3[矿业工程—矿井建设]