CAJ | 학술논문

为揭示瓦斯和瓦斯煤尘爆炸反射压力沿矿井巷道传播变化的规律，用管道爆炸实验系统模拟测试极弱爆炸和极强爆炸巷道超压与反射压力的定量变化关系．结果表明，瓦斯和瓦斯煤尘与空气混合爆炸，在弱爆炸条件下爆炸的反射压力均是峰值超压的1．8~2．0倍，！爆炸下瓦斯或瓦斯煤尘爆炸的反射压力大约是峰值超压的8~21倍．实验结果与理论计算基本吻合，表明巷道反射压力强度取决于冲击波在巷道空间内的反射过程，巷道内爆炸超压强度随爆炸传播距离的增加而降低，遇固壁则反射压力强度加大，加重了井下设备的破坏和人员伤害程度．
위게시와사화와사매진폭작반사압력연광정항도전파변화적규률，용관도폭작실험계통모의측시겁약폭작화겁강폭작항도초압여반사압력적정량변화관계．결과표명，와사화와사매진여공기혼합폭작，재약폭작조건하폭작적반사압력균시봉치초압적1．8~2．0배，！폭작하와사혹와사매진폭작적반사압력대약시봉치초압적8~21배．실험결과여이론계산기본문합，표명항도반사압력강도취결우충격파재항도공간내적반사과정，항도내폭작초압강도수폭작전파거리적증가이강저，우고벽칙반사압력강도가대，가중료정하설비적파배화인원상해정도．
In order to reveal the gas,gas and coal dust explosion reflected pressure changes along with the spread of mine tunnel, relationship between quantitative changes of explosion overpressure and reflected pressure is tested with the pipe explosion experiment system. The results show that in the gas and coal dust and gas mixed with air explosion,reflected pressure explosion in the weak condi-tion is 1. 8~2. 0 times of peak overpressure,in strong explosion the reflected pressure of gas or gas and coal dust explosion is about 8~21 times of peak overpressure. The experimental results were in accordance with the theoretical calculation,showing that the reflec-ted pressure intensity depends on the reflection of shock wave in the process of roadway space. The explosion overpressure strength in-creases as the distance from the explosion propagation decreases in the tunnel,but before solid wall the reflection intensity of pressure will increase,which aggravates the equipment damage and human injuries.