Experimental system and method for gas loss measurement during coal sample crushing

A technology of crushing process and measurement method, which is applied in the direction of weighing by removing certain components, can solve the problems of large error in the loss of gas, hidden dangers of coal mine safety production safety, and influence on the accuracy of gas content measurement values, so as to improve the measurement The effect of accuracy
CN106896034BActive Publication Date: 2020-10-30ANHUI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI UNIV OF SCI & TECH
Publication Date
2020-10-30

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Abstract

The invention provides an experimental system and an experimental method for measuring the loss amount of gas in the process of crushing coal samples. The experimental system comprises an experiment main body device, a vacuumizing system, a pressure loading system, a gas loading system, a linear motor control system, a digital type mass flowmeter and a gas collecting system. The process of crushing a coal seam and initially desorbing gas can be simulated, and an experiment method is provided for mastering the coal seam crushing and gas initial desorption rule. The gas initial desorption rule when different coal seams are crushed under the condition of different environmental parameters can be analyzed through a large amount of experimental data, and the gas desorption quantity calculation formula is summarized. Scientific theoretical basis is provided for calculation of gas loss amount in a method for measuring the gas content of the coal seam by a direct method, the measuring accuracy of the direct method is improved, and technical guarantee is provided for safety mining of the coal.
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Description

technical field

[0001] The invention belongs to the field of coal mine gas disaster prevention and control, and in particular relates to an experimental system and method for measuring gas loss during the coal sample crushing process. Background technique

[0002] Coal and gas outburst is an extremely complex gas dynamic disaster phenomenon that occurs in underground coal mines. Since 2009, my country has implemented the "Regulations on the Prevention and Control of Coal and Gas Outbursts", which put forward strict requirements for the mining of coal and gas outburst coal seams. Coal and gas outburst prediction can guide the scientific application of outburst prevention measures, reduce the amount of outburst prevention measures, and ensure the personal safety of workers operating in outburst coal seams. Therefore, highlighting the forecast has great practical significance. According to the comprehensive effect hypothesis of coal and gas outburst, the gas content of coal s...

Claims

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