Automatic coal seam permeability test device and method

Abstract

The invention discloses an automatic coal seam permeability test device and method. The device comprises a pressure measurement tube and an automatic test module; the automatic test module comprises adevice housing, a gas pressure meter with data recording and transmission functions, a gas flow meter with data recording and transmission functions, a control unit, an electromagnetic flow valve anda power supply, wherein the gas pressure meter, the gas flow meter, the control unit, the electromagnetic flow valve and the power supply are arranged in the device housing; a housing body of the device housing is provided with a gas inlet, a gas outlet, an input device, a data output interface and a display screen; the gas pressure meter is connected with the gas inlet and the electromagnetic flow valve through pressure-resistant tubes, the gas flow meter is connected with the electromagnetic flow valve and the gas outlet through pressure-resistant tubes, and the control unit is connected with the gas pressure meter, the gas flow meter, the electromagnetic flow valve, the power supply, the input device, the data output interface and the display screen through wires; the pressure measurement tube is connected to the gas inlet of the device housing through a pressure-resistant tube I. The automatic coal seam permeability test device and method realize automatic and accurate coal seam permeability testing and improve the coal seam permeability testing efficiency.

Description

Technical field [0001] The invention relates to an automatic coal seam permeability test device and method, and belongs to the field of mine safety. Background technique [0002] Coal is my country's main energy source, accounting for about 60% of the primary energy composition. Gas is a companion organism in the process of coal mining and is one of the main factors that seriously threaten coal mine safety production. Gas disasters cause a large number of casualties and huge property losses every year. Before coal resources are mined, the gas in the coal seams can be extracted and used, which can not only ensure the safe mining of coal resources and promote the use of coal mine gas, an efficient and clean energy source, but also protect the atmospheric environment and achieve “safety, energy, "Environmental" triple benefits. [0003] The key factor to control the effect of gas drainage is coal seam permeability, which reflects the difficulty of gas passing through the coal seam ...

AI Technical Summary

Problems solved by technology

[0004] The traditional method of testing the permeability of underground coal seams in coal mines is very cumbersome and complicated. The multi-step testing process requires multiple sets of equipment to complete. Correspondingly, multiple operators are required to handle it. This runs counter to the trend of automation and intelligence in the mining industry.

In addition, there is a method of testing the permeability of small coal samples in the ground laboratory, but the test devices and methods are of simulation nature, and the test operation is carried out in an off-site environment, and due to the small coal sample and coal seam scale The gap is too large, and there is always a certain error between the authenticity and accuracy of the permeability obtained by this method and the actual situation

Images