开展不同含水率状态下的喷孔物理试验,以探讨煤层含水率状态对喷孔动力现象的影响规律和作用机理。结果表明:煤层含水率的增加会降低其抗剪强度,削弱了煤体抵抗喷孔过程中剪切破坏的能力;含水率的增加减小了煤层喷孔倾向性,并降低了喷孔过程中的喷孔强度、喷出煤粉的破碎程度和煤体温度的降低量。 In order to explore the law and mechanism of the influence of the water content of the coal seam on the dynamic characteristics of the injection hole, physical experiments of the nozzle holes with different water content were carried out. The results show that the increase of water cut of coal seam will reduce the shear strength and weaken the ability of coal to resist the shear failure in the process of spray hole. The increase of water cut reduces the jet hole propensity of coal seam, Of the hole strength, the degree of pulverized pulverized coal and coal to reduce the amount of temperature.