Soft coal seam gas extraction drill hole repairing method based on pressurization transmission impact energy

The invention relates to a soft coal seam gas extraction drill hole repairing method based on pressurized transmission of impact energy, belongs to the field of coal mine safety, and solves the problem that in the soft low-permeability coal seam gas extraction process, drill hole blockage is caused by conventional hole collapse, and then the gas extraction effect is affected. An underground coal mine compressed air source is connected with a supercharger, so that an impact inclined block is in contact with a trigger bolt, the trigger bolt is pushed to enable a cone at the bottom of the trigger bolt to be in contact with an impact elastic piece, and an elastic piece limiting block on the impact elastic piece is separated from a trigger limiting opening; and then the impact cone and the impact cylinder impact the coal body at the collapse part under the action of the impact spring until the coal body at the collapse part is scattered. 本发明涉及一种基于增压传递冲击能量的松软煤层瓦斯抽采钻孔修复方法，属于煤矿安全领域，解决了松软低透煤层瓦斯抽采过程中，常规的塌孔造成的钻孔堵塞进而影响瓦斯