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

An ultrasonic and gas permeability technology, applied in mining equipment, mining fluid, gas discharge, etc., can solve the problems of reduced drainage effect and easy re-closing of coal cracks.

Inactive Publication Date: 2021-08-31
华能云南滇东能源有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Embodiment 1

[0020] Embodiment 1, with reference to Figure 1-3 , a sustainable ultrasonic anti-reflection equipment for low-permeability coal, including an ultrasonic anti-reflection mechanism, the ultrasonic anti-reflection mechanism includes an ultrasonic generator 14, an ultrasonic transducer 16, an ultrasonic wave deriving rod 9 and a circuit switch 15, the The ultrasonic generator 14, the ultrasonic transducer 16, the ultrasonic wave deriving rod 9 and the circuit switch 15 are connected by wires to form a series circuit.

[0021] A process for sustainable ultrasonic anti-reflection equipment for low-permeability coal, comprising the following steps:

[0022] The first part is to be drilled to place the pipeline, drill hole 1 according to the requirements of the construction aperture, use the water injection pipe to flush the drill cuttings inside the drill hole 1, put in the drain pipe 10, ultrasonic wave export rod 9, water injection pipe 5 and gas drainage in sequence Pipe 2, whe...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/25E21B43/00E21F7/00
CPCE21B43/25E21B43/003E21B43/006E21F7/00
Inventor 张西斌胡兵李义朝胡勇徐栋于赟
Owner 华能云南滇东能源有限责任公司
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