Exploration of New Gas Drainage Technology on the Basis of Ultrasonic Wave's Cavitation

摘要

In some mines, geologic structure is very complex, permeability of coal is not good, and the coal is soft, and it is very difficult for the traditional gas drainage technology to fit for the need of safety production, and therefore, it is necessary to seek for the new gas drainage technology. In the text, the occurrence condition of gas and correlativity of coal seam temperature and gas desorption velocity were discussed, and then, According to ultrasonic wave's cavitation to liquid, a new gas drainage technology was brought (sending ultrasonic wave to coalseam, under the action of ultrasonic wave's cavitation, coal seam temperature will rise, and enhancing gas desorption velocity, augmenting velocity of gas fluxion). Finally, two difficulties that will be met in the process of generalizing it were analyzed.