Sustainable ultrasonic anti-reflection equipment and process for low-permeability coal body

Abstract

The invention discloses sustainable ultrasonic anti-reflection equipment and process for a low-permeability coal body. The anti-reflection equipment comprises an ultrasonic anti-reflection mechanism, and the ultrasonic anti-reflection mechanism comprises an ultrasonic generator, an ultrasonic transducer, an ultrasonic leading-out rod and a circuit switch; and the ultrasonic generator, the ultrasonic transducer, the ultrasonic leading-out rod and the circuit switch are connected through wires and form a series circuit. The anti-reflection process comprises the steps of conducting drilling and pipeline placing, conducting hole sealing and grouting, conducting coal body anti-reflection and conducting repeated extraction. According to the sustainable ultrasonic anti-reflection equipment and process, the ultrasonic generator, the ultrasonic transducer and the ultrasonic leading-out rod are used for generating ultrasonic waves in the coal body, the ultrasonic waves are used for enabling the coal body to generate resonance and crack anti-reflection measures, and the technologies of repeated water injection, repeated vibration and repeated anti-reflection drainage are adopted, so that gas of the coal body can be extracted to the maximum extent, and the extraction reaches the standard.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a sustainable ultrasonic anti-transmission equipment and process for low-permeability coal. Background technique [0002] In order to solve the gas problem in high gas, coal and gas outburst coal mines, coal seam gas drainage is usually required, but for coal bodies with no cracks and poor air permeability, it is often difficult to effectively drain the gas, and the drainage effect is poor. Take anti-permeability measures for coal. [0003] In order to solve the problem of gas drainage, the commonly used anti-reflection technical measures mainly include hydraulic punching, hydraulic pressure, hydraulic slotting and other technologies. However, these measures are mainly one-time measures. After the measures are implemented, due to the influence of coal displacement and pressure changes, the coal fissures are easy to reclose, resulting in a decline in the drainage effect. Co...

AI Technical Summary

Problems solved by technology

However, these measures are mainly one-time measures. After the implementation of the measures, affected by the displacement of the coal body, pressure changes and other reasons, the cracks in the coal body are easy to close again, resulting in a decline in the drainage effect.

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