水力压裂技术是近年来发展起来的一种新型的增强煤体透气性技术,通过打钻形成钻孔后,向钻孔内注入高强压力水。使煤体内部结构受到破坏,在高压水力作用下,最终使煤体深部原生裂隙扩张,空隙增大,从而提高煤层的透气性,使游离态的瓦斯量增多,大大提高了瓦斯抽放效率,同时也降低了煤层瓦斯突出性危险。 Hydraulic fracturing technology developed in recent years is a new type of technology to enhance the permeability of coal gas, drilling through the formation of drilling, drilling into the high-pressure water pressure. So that the internal structure of the coal will be destroyed. Under the action of high pressure and pressure, the deep fracture of the coal will eventually expand and the voids increase, which will improve the gas permeability of the coal seam and increase the amount of free gas, greatly improving the gas drainage efficiency. Meanwhile, It also reduces the risk of gas outburst in the coal seam.