摘要
防护门是坑道工程的重要防护屏障,常规装药在坑道出入口堵口爆炸时造成防护门不同程度毁伤并进入坑道内部形成空气冲击波,目前尚无确定这种空气冲击波的工程算法,无法满足坑道工程毁伤评估的需要。完成了不同装药量、不同爆距钢筋混凝土防护门前爆炸坑道内部空气冲击波效应试验及无防护门对比试验,获得了钢筋混凝土防护门的毁伤特征和沿坑道传播的空气冲击波实测波形。据此提出了钢筋混凝土防护门破坏等级划分及特征描述,并对有无防护门坑道中空气冲击波实测波形进行了对比分析,指出了无论是空气冲击波波形结构还是冲击波特征参量(峰值和作用时间等)均存在明显差异。
The blast door is an important protective barrier in the tunnel engineering.Conventional charges cause varying degrees of damage to the blast door when the blockage explosion occurs at the entrance and exit of the tunnel and then form residual air shock wave propagation inside the tunnel.At present,there is no engineering applicable algorithm to determine this kind of air shock wave,which can not meet the needs of damage assessment of the tunnel engineering.In this paper,the experiments of internal air shock wave effect inside the explosion tunnel in front of reinforced concrete blast doors with different charge quantity and different blast distance and the comparative experiments without blast doors have been completed.The damage characteristics of reinforced concrete blast doors and the measured waveforms of residual air shock wave propagating along the tunnel have been obtained.Based on this,the classification and characterization of damage level of reinforced concrete blast doors are put forward,and the measured waveforms of air shock wave in tunnel with or without blast doors are compared and analyzed,and significant differences between the waveform structure of air shock wave and the characteristic parameters of shock wave(peak value and action time,etc.)are pointed out.
作者
何翔
孙桂娟
刘飞
任新见
杨建超
王幸
陈力
HE Xiang;SUN Guijuan;LIU Fei;REN Xinjian;YANG Jianchao;WANG Xing;CHEN Li(Institute of Defense Engineering,AMS,PLA,Luoyang 471023,China;Institute of Defense Engineering,AMS,PLA,Beijing 100850,China)
出处
《防护工程》
2019年第4期1-4,共4页
Protective Engineering
关键词
坑道工程
空气冲击波
防护门
试验研究
tunnel engineering
air shock wave
blast door
experimental study
