直通巷道小药量裸露药包爆炸冲击波特性  

Blast shock wave characteristics of small exposed charge in straight-through tunnels

作　　者：王海亮[1] 冀新宇 缪玉松 于建新[3] 高尚 WANG Hailiang;JI Xinyu;MIAO Yusong;YU Jianxin;GAO Shang(College of Safety and Environment Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China;School of Science, Qingdao University of Technology, Qingdao, Shandong 266520, China;School of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454003, China)

机构地区：[1]山东科技大学安全与环境工程学院,山东青岛266590 [2]青岛理工大学理学院,山东青岛266520 [3]河南理工大学土木工程学院,河南焦作454003

出　　处：《中国科技论文》2022年第5期475-480,共6页China Sciencepaper

基　　金：国家自然科学基金资助项目(10672091)。

摘　　要：为研究直通巷道内小药量裸露药包爆炸冲击波的传播特性,在某矿区7中段巷道中进行小药量裸露药包试验,对测得的爆炸冲击波进行分析。结果表明,单侧开口直通巷道中裸露药包爆炸时,各测点压力均先迅速升高后震荡衰减至初始状态。根据爆心距(R)与巷道等效直径(d)的关系,将爆炸冲击波分为爆炸近区、爆炸中区、爆炸远区3种类型:爆炸近区,冲击波超压主要受入射波控制,叠加现象不明显;爆炸中区,冲击波叠加现象明显,波形中出现多个中间无负压状态的连续峰值,甚至出现反射波压力大于入射波的现象;爆炸远区,冲击波的反射叠加作用使得峰值的正压作用时间继续升高。拟合得到冲击波超压峰值、正压作用时间、比冲量公式,其与实测数据平均相对误差不超过14.45%。研究结果对巷道爆破冲击波分析与防护有一定的指导意义。In order to study the explosivity of the small exposed charge in straight-through tunnel,test was carried out in the 7th section of tunnel in a certain mining area,as to analyze its shock wave.The result suggests when the exposed charge in a single-sided opening in tunnel explodes,the pressure at each measuring point increases rapidly at first and then decreases to the initial level.According to the relationship between the blast center distance(R)and the equivalent diameter(d)of the tunnel,the explosion shock wave is divided into three types:near,middle and far zones.In the near zone,the shock wave overpressure is mainly subjected to the incident wave,whose superposition phenomenon is not obvious.In the middle zone,continuous peaks in the wave form occur without any negative pressure,and its superposition is apparent,even the pressure of its incident wave is stronger than that of its refractive wave.In the far zone,the superpostion effect of the shock wave continuously increase the positive pressure time.The data roughly coincides with that in real test in the aspect of the peak value of shock wave overpressure,positive pressure time,and specific impulse formula,and the average relative error with the measured data does not exceed 14.45%.The result has certain guiding significance for the analysis and protection of tunnel blasting shock wave.

关 键 词：直通巷道 小药量 冲击波超压 比冲量 

分 类 号：X936[环境科学与工程—安全科学]