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在理论分析吸附压力对瓦斯放散初速度影响的基础上,实验测定了吸附压力对瓦斯放散初速度的影响。结果表明瓦斯放散初速度受吸附压力影响较大,吸附压力越高瓦斯放散初速度越大,吸附压力越小瓦斯放散初速度越小。实验室测定瓦斯压力时应尽量保持吸附压力为0.1MPa,现场使用该指标时应根据当地的大气压力情况做适当调整。
Based on the theoretical analysis of the influence of adsorption pressure on the initial gas velocity, the influence of adsorption pressure on the initial gas velocity was experimentally determined. The results show that the initial velocity of gas release is greatly influenced by the adsorption pressure. The higher the adsorption pressure is, the higher the initial velocity of gas release and the smaller the adsorption pressure are. Laboratory determination of gas pressure should try to maintain the adsorption pressure of 0.1MPa, field use of the indicator should be based on local atmospheric pressure to make the appropriate adjustments.