摘要
运用爆炸相似理论,在无限空间中炸药爆炸冲击波的超压规律基础上,考虑瓦斯浓度、巷道截面积、冲击波传播距离、混合物体积等因素,建立了煤矿掘进巷道内瓦斯爆炸冲击波的超压预测模型。根据一定的实验数据,拟合出超压与瓦斯浓度、冲击波传播距离,以及与瓦斯—空气混合物体积之间的关系。通过实例对该模型进行验证,结果表明模型预测数据与实验数据比较吻合。
In this paper, the overpressure prediction model of gas explosion shock wave in the excavation roadway was established hy using the theor^^ of explosion similarity, based on the overpressure law of the explosive blast wave in the infinite space and hy taking the factors such as the gas concentration, the cross-section area of the roadway, the propagation distance of shock wave and the volume of mixture into account. The relationship of the overpressure and gas concentration, the propagation distance of shock wave and the volume of the gas - air mixture was fitted according to some experiment data. The model was verified by the experiment cases, and the results showed that the model data was fairly close to that of the experiment ones.
出处
《矿业安全与环保》
北大核心
2017年第5期18-20,29,共4页
Mining Safety & Environmental Protection
基金
国家自然科学基金项目(51374121)
关键词
煤矿
掘进巷道
瓦斯爆炸
冲击波
超压
爆炸相似律
coal mine
excavation roadway
gas explosion
shock wave
explosing simularity law
