密闭管道瓦斯爆炸冲击波冲量及压力上升速率的实验研究

发布时间：2018-05-05 10:45

本文选题：瓦斯爆炸 + 冲量　；参考：《中国安全生产科学技术》2015年08期

【摘要】：针对矿井瓦斯爆炸破坏模式主要在压力破坏和冲量破坏的研究,实验分析瓦斯在密闭管道发生爆炸时瓦斯浓度对冲击波冲量及压力上升速率的影响,利用管道中距离点火源不同位置的压力传感器测试了不同浓度瓦斯的爆炸压力,对冲击波冲量及压力上升速率进行分析,为防爆抑爆提供依据。研究结果显示:在管道中距离点火源的不同位置上,当浓度为9.5%时,瓦斯爆炸冲击波冲量及压力上升速率最大;由于超压衰减和传播距离的增加,在距离点火源4m和8m时压力冲量较大;在瓦斯浓度较低的范围内瓦斯爆炸时,其压力上升速率增长较快,而随着浓度的增加在较宽的浓度范围内,能较稳定地维持在高位值。
[Abstract]:In view of the research of mine gas explosion failure mode mainly in pressure and impulse failure, the effect of gas concentration on shock wave impulse and pressure rise rate is analyzed experimentally when gas explosion occurs in closed pipe. The explosion pressure of gas with different concentrations was measured by using pressure sensors located in different locations of ignition source in pipeline. The shock wave impulse and pressure rise rate were analyzed to provide the basis for explosion proof and explosion suppression. The results show that the shock wave impulse and pressure rise rate of gas explosion are the largest when the concentration is 9.5 in different locations of the ignition source in the pipeline due to the overpressure attenuation and the increase of propagation distance. At the distance of 4 m and 8 m from the ignition source, the pressure impulse is larger, and when the gas concentration is lower, the pressure rise rate increases rapidly, but with the increase of the concentration, the pressure rise rate can be maintained at a higher value in a wide range of concentrations.
【作者单位】：辽宁工程技术大学安全科学与工程学院;矿山热动力灾害与防治教育部重点实验室;
【基金】：国家自然科学基金委员会与神华集团有限公司联合资助项目(51174265) 国家自然科学基金青年科学基金项目(51404126)
【分类号】：TD712.7

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