Servo seepage method for fracturing gas-containing coal body with high-power impulse waves

Abstract

The invention relates to the technical field of exploitation of coal-bed methane (mine gas) and particularly relates to a servo seepage method for fracturing a gas-containing coal body with high-powerimpulse waves. The servo seepage method comprises the following steps: Step a, making a coal sample; Step b, mounting a high-power impulse generation mechanism; Step c, connecting the high-power impulse generation mechanism and the coal sample through a conducting wire; and Step d, operating the high-power impulse generation mechanism, so that the high-power impulse generation mechanism can transmit high-power impulses to the coal sample with set impulse energy to fracture the coal sample. The servo seepage method has the beneficial effects that the impulse energy required for enabling the fracturing effect on the coal body to be better can be more accurately determined when the coal body is fractured with the high-power impulses.

Description

technical field [0001] The invention relates to the technical field of coal bed methane (mine gas) exploitation, in particular to a servo seepage method for cracking gas-containing coal bodies by high-power pulse waves. Background technique [0002] In recent years, with the development of science and technology, my country has made a breakthrough in the development of coal seams. As my country's coal demand increases year by year, the mining of coal seams in my country has gradually shifted to the deep. Deep coal seams have high gas pressure and high gas content, which easily lead to coal and gas outburst dynamic disasters in the mine production process. In order to prevent coal and gas outburst disasters and ensure safe production, it is necessary to drain the gas in the coal seam before mining the coal seam. However, the gas permeability of deep coal seams is generally low, so gas drainage is more difficult. In order to reduce the difficulty of gas drainage, measures ne...

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