我国煤矿瓦斯灾害严重，开采过程中，煤层瓦斯快速解吸涌出，易造成瓦斯超限及煤与瓦斯突出。为降低瓦斯危害，通常采用煤层注水等水力化措施，但水具有较高表面张力以及煤体的疏水性导致水分很难使煤体均匀润湿，煤体润湿性的改变成为抑制瓦斯解吸的关键之一，对水进行磁化及在水中添加表面活性剂可有效改善煤体润湿性。

论文选择新疆艾维尔沟煤矿煤样，通过测定溶液表面张力及煤体接触角得到表面活性剂对煤体润湿性的影响规律，得到所选表面活性剂表面张力及煤体接触角均随着质量分数的增加迅速减小直至平稳，其中质量分数0.4%的SDBS对煤体的润湿效率最高，使去离子水表面张力降低了55.59%，煤体接触角降低了73.3%，PPG400对煤体的润湿效率最低。

通过测定水及表面活性剂在不同磁化参数下的粘度、密度、酸碱性分析磁化对溶液理化性质的影响规律，得到磁化使溶液pH值增大，密度小幅上升，粘度降低。通过测量水及表面活性剂在不同磁场条件下表面张力、煤体接触角，得到煤体润湿性在磁化作用下的变化规律，与水、单一表面活性剂、磁化水相比，当表面活性剂质量分数为0.4%，磁场强度为500-550 mT，磁化时间为15 min时，SDBS对煤体润湿影响最为显著。

利用傅里叶红外光谱分析了溶液磁化前后分子结构的变化，得到磁化使APG0810氢键吸收峰面积减少了37.27%，SDBS氢键吸收峰面积减少了43.04%；测定表面活性剂浸泡前后煤体官能团结构，分析得到含氧官能团吸收峰面积增加，煤体润湿性增强，其中SDBS使煤体含氧官能团吸收峰面积增加了77.51%。通过微电泳仪对煤体Zeta电位进行测定，得到单一表面活性剂、磁化水及磁化表面活性剂能够改变溶液在煤体表面的吸附状态，使煤的负电性增强。综合分析得到磁化与表面活性剂协同作用对煤体润湿性的影响机理，即表面活性剂通过与煤体的吸附作用，磁场通过作用于液体氢键提高煤体润湿性，研究结果对煤体润湿性的改善及煤矿瓦斯解吸的抑制具有一定的指导作用。

The gas disasters in coal mines in our country are serious. During the mining process, the gas in the coal seam is quickly desorbed and gushing out, which easily causes gas overrun and coal and gas outburst. In order to reduce gas hazards, hydraulic measures such as coal seam water injection are usually used. However, water has high surface tension and the hydrophobicity of the coal body makes it difficult for water to wet the coal body uniformly. The change of coal body wettability becomes one of the key to inhibiting gas desorption. Magnetization and the addition of surfactants can effectively improve the wettability of coal.

The paper selects Xinjiang Aiweiergou coal seam, by measuring the surface tension of the solution and the contact angle of the coal, the influence of the surfactant on the wettability of the coal is obtained. The study suggests that the surface tension of the selected surfactant and the contact angle of coal body decreases rapidly with the increase of mass fraction until it becomes stable. Among them, SDBS with a mass fraction of 0.4% has the highest wetting efficiency on the coal body, the surface tension of deionized water is reduced by 55.59%, and the contact angle of coal body is reduced by 73.3%, however PPG400 has the lowest wetting efficiency for coal.

Analyze the influence of magnetization on the physical and chemical properties of the solution by measuring the viscosity, density, acidity and alkalinity of water and surfactants under different magnetization parameters, obtained magnetization makes the pH value and density of the solution increase slightly, and the viscosity decreases. By measuring the surface tension of water and surfactants and coal contact angle under different magnetization parameters, the influence of magnetization on coal wettability was obtained. The study found that compared with water, single surfactants, and magnetized water, When the mass fraction of surfactant is 0.4%, the magnetic field strength is 500-550 mT, and the magnetization time is 15 min, SDBS has the most significant impact on coal wetting.

Fourier infrared spectroscopy was used to analyze the changes of molecular structure before and after magnetization of the solution. And it was found that the magnetization reduced the hydrogen bond absorption peak area of APG0810 by 37.27% and the SDBS hydrogen bond absorption peak area by 43.04%. Fourier infrared spectrometer was used to determine the structure of coal functional groups before and after surfactant soaking, and the analysis showed that the absorption peak area of oxygen-containing functional groups increased, and the wettability of coal was enhanced. Among them, SDBS increased the absorption peak area of oxygen-containing functional groups in coal by 77.51%. The Zeta potential of coal was measured by a microelectrophoresis instrument, and it was obtained that the single surfactant, magnetized water and magnetized surfactant can change the adsorption state of the solution on the surface of the coal and increase the negative electricity of the coal. Comprehensive analysis to obtain the mechanism of the synergistic effect of magnetization and surfactants on coal wettability, surfactant improves coal wettability through its adsorption on coal, and magnetic field improves coal wettability through hydrogen bonds acting on the liquid. The research results have a certain guiding effect on the improvement of coal wettability and the suppression of coal mine gas desorption.

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