为防范煤矿瓦斯事故，实现瓦斯高效精准抽采，在井下局部高浓度瓦斯区域喷淋瓦斯缓释剂成为防控瓦斯超限的重要手段之一。依据煤矿掘进工作面搭建相似比模型，利用自主研制的多因素影响煤体瓦斯解吸喷淋试验台，研究了喷淋瓦斯缓释剂下不同因素影响解吸瓦斯峰值浓度分布的规律，分析了APG溶液质量分数、雾化压力、煤样粒径、平衡压力、环境温度、空气流量等因素对解吸瓦斯峰值浓度分布的影响，利用Pearson相关系数法得到了喷淋瓦斯缓释剂后各因素与不同区域瓦斯峰值浓度的相关性。结果表明：APG溶液质量分数小于0.10%时，瓦斯峰值浓度随APG质量分数增加迅速下降，超过0.10%时下降率减小。缓释剂作用下，瓦斯峰值浓度与雾化压力、煤样粒径分别呈负线性和负指数关系，瓦斯峰值浓度随雾化压力与煤样粒径的增大而降低，煤样粒径为5～10 mm时瓦斯下降率最大；瓦斯峰值浓度与平衡压力、环境温度分别呈线性和指数函数关系，瓦斯峰值浓度随平衡压力与环境温度的升高而增加，环境温度为35 ℃时瓦斯峰值浓度增长率最高。在工作面模型中心，瓦斯峰值浓度随空气流量升高而迅速降低，工作面拐角处瓦斯峰值浓度也随空气流量增大而降低，并在超过12.7×10⁻³ m³/s时瓦斯峰值浓度降低速率减小。在多因素共同作用下，瓦斯峰值浓度相较于单一因素降低了4.3%～8.0%。利用相关系数法计算得到影响进风口上下拐角、出风口上下拐角和模型中心的瓦斯峰值浓度最大因素分别为雾化压力、雾化压力、平衡压力、环境温度、平衡压力。

In order to prevent coal mine gas accidents and realize efficient and accurate gas extraction, spraying gas sustained-release agent in local high concentration gas area has become one of the important means to prevent and control gas overlimit. The self-developed multi-factor influencing coal gas desorption and spraying experiment platform, built based on the similarity ratio model of coal mine driving working face, was used to study the law of different factors affecting the peak concentration distribution of desorbed gas under spraying gas sustained-release agent. The effects of APG solution mass fraction, atomizing pressure, coal sample particle size, equilibrium pressure, ambient temperature, wind speed and other factors on the peak concentration distribution of desorbed gas were analyzed. The Pearson correlation coefficient method was used to obtain the correlation between the factors and the peak gas concentration in different areas after spraying gas sustained-release agent. The results shown that, the peak gas concentration declined rapidly with increasing mass fraction for APG solution mass fraction less than 0.10%, and the decline rate decreased when it exceeded 0.10%. Under the effect of sustained-release agent, the peak gas concentration shown negative linear and negative exponential relationship with atomization pressure and coal sample particle size, respectively. The peak gas concentration decreased with the increase of atomization pressure and coal sample particle size, and the maximum gas reduction rate was observed when the coal sample particle size was 5-10 mm. The peak gas concentration shown linear and exponential relationship with equilibrium pressure and ambient temperature, respectively. The peak gas concentration increased with the increase of equilibrium pressure and ambient temperature, and the growth rate of peak gas concentration was the highest when the ambient temperature was 35 °C. The peak gas concentration at the center and corners of the working face model decreased with increasing wind speed, and the reduction rate of peak gas concentration decreased when the wind speed exceeded 12.7×10⁻³ m³/s. The peak gas concentration was reduced by 4.3%-8.0% with multiple factors compared to a single factor. Using the correlation coefficient method, the maximum factors affecting the peak gas concentration at the upper and lower corners of the inlet, upper and lower corners of the outlet, and the center of the model were obtained as atomization pressure, atomization pressure, equilibrium pressure, ambient temperature and equilibrium pressure, respectively.