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为了能较好的对矿井独头巷道瓦斯爆炸的超压进行预测,在相似定律、TNT当量理论的基础上,对管道瓦斯爆炸实验的超压测点距离进行了换算,结合矿井瓦斯爆炸超压实验数据,建立了相应的矿井瓦斯爆炸超压预测模型,并通过50m3、100m3、200m3瓦斯-空气混合气体的矿井瓦斯爆炸实验对此预测模型进行了验证:此预测模型对于体积分别为50m3、100m3、200m3的瓦斯-空气混合气体爆炸实验超压的预测平均相对误差依次为7.56%、6.01%、14.88%,对于50m3、100m3的超压预测较好,对于200m3的预测效果相对较差。此预测模型可以应用到几何成比例、浓度相同、不同体积的矿井瓦斯-空气混合气体爆炸超压预测。总体来说,此超压预测模型误差较小,预测值和实验值吻合较好。
In order to predict the overpressure of gas explosion in a single mine tunnel, based on the similarity law and TNT equivalence theory, the overpressure measuring point distance of pipeline gas explosion experiment was converted. Combined with the gas explosion overpressure Experimental data to establish a corresponding mine gas explosion overpressure prediction model, and through the 50m3, 100m3, 200m3 gas - air mixture gas mine gas explosion experiments to verify the prediction model: This prediction model for the volume of 50m3, 100m3 The average relative errors of 200m3 gas-air mixed gas explosion experiments were 7.56%, 6.01% and 14.88%, respectively. The predictions of overpressure for 50m3 and 100m3 were better, and the prediction results for 200m3 were relatively poor. This prediction model can be applied to predict the overpressure of gas-air mixture explosions in mines with the same geometry, different concentrations and different concentrations. Overall, the error of the overpressure prediction model is small, and the predicted value is in good agreement with the experimental value.