Coal seam anti-reflection experiment device based on high-voltage electric pulse

Abstract

The invention relates to a device for performing experiments by combining high-voltage pulse discharging and the traditional coal seam anti-reflection technology, in particular to a coal seam anti-reflection experiment device based on high-voltage electric pulse. The coal seam anti-reflection experiment device based on high-voltage electric pulse comprises a high-voltage pulse power supply, a first tube body, a second tube body, a third tube body, a rigid triaxial pressure chamber, a pressure testing pump, a hydraulic control system and a sound reflection preamplifier, wherein the first tube body, the second tube body and the third tube body are connected in sequence. The traditional hydraulic fracturing technology is simulated in the rigid triaxial pressure chamber, the high-voltage pulse power supply supplies power to a discharging electrode, therefore, the positions around a through hole of a coal sample fracture, a fracturing positions and an expanding process of the fractures in the coal sample are monitored all the time, critical factors affecting fracture development of the coal sample and state transformation of gas, an actuating range and effect laws of pulse discharging on fracture development can be obtained through the later CT scanning and electron microscopy observation results, and a theoretical foundation is provided for practical application of high-voltage pulse discharging into underground coal seam anti-reflection.

Description

technical field [0001] The invention relates to an experiment device combining high-voltage pulse discharge and traditional coal seam anti-reflection technology, in particular to a coal seam anti-reflection experimental device based on high-voltage electric pulse. Background technique [0002] Gas is also called coalbed methane. Because of its flammable and explosive characteristics, it has become an important source of danger in the process of underground coal mining. At the same time, because its main component, methane, is a greenhouse gas, a large amount of air emissions can seriously aggravate global pollution. climate warming and damage to the ozone layer. However, as a clean fuel and an important industrial raw material, coalbed methane can be used as industrial fuel for city gas, automobile fuel, power plants and processing plants, etc. Both underground coal mine gas accidents and atmospheric environment protection are of great significance. [0003] At present, mo...

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Problems solved by technology

[0008] In order to solve the problem that there is no device that can realize the combination of high-voltage pulse discharge and traditional coal seam anti-reflection technology for experiments, the present invention provides a coal seam anti-reflection experimental device based on high-voltage electric pulses

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