不同曲率弯曲巷道爆炸冲击波传播特性数值模拟研究

发布时间：2018-05-12 14:52

本文选题：弯曲巷道 + 爆炸冲击波　；参考：《中国安全生产科学技术》2016年12期

【摘要】：为研究爆炸冲击波在不同曲率弯曲巷道内的传播规律,采用数值模拟手段建立了不同曲率弯曲巷道爆炸模型,分析了爆炸冲击波在巷道内的传播特性及其变化规律,并结合冲击波超压对人体的伤害程度分类,研究了不同曲率弯曲巷道内爆炸破坏效应分区。模拟结果表明,弯曲角度改变了巷道内冲击波超压分布,随着巷道弯曲角度的不断增大,壁面反射对冲击波超压峰值分布起主要作用,随着传播距离的增加,冲击波超压峰值衰减显著,体现了超压峰值变化的距离效应。此外,巷道弯曲角度的增加整体减小了爆炸损伤严重程度。研究结果可实现对不同曲率弯曲巷道内冲击波超压分布的预测,并为巷道内爆炸事故预防及应急救援提供借鉴。
[Abstract]:In order to study the propagation law of blast wave in the tunnel with different curvature, a numerical simulation method is used to establish the explosion model of the tunnel with different curvature, and the propagation characteristics and variation law of the blast wave in the tunnel are analyzed. Combined with the classification of damage degree of shock wave overpressure to human body, the zone of explosion damage effect in different curvature bend roadway is studied. The simulation results show that the bending angle changes the distribution of shock wave overpressure in roadway. With the increasing of tunnel bending angle, wall reflection plays a major role in the peak distribution of shock wave overpressure, and increases with the increase of propagation distance. The peak attenuation of the shock wave overpressure is significant, which reflects the distance effect of the change of the overpressure peak. In addition, the increase of roadway bending angle reduces the severity of explosion damage. The results of the study can be used to predict the distribution of shock wave overpressure in the tunnel with different curvature and provide reference for the prevention of explosion accidents and emergency rescue in the roadway.
【作者单位】：北京石油化工学院安全工程学院;
【基金】：国家自然科学基金项目(51404029,51604031)
【分类号】：O383

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