Coal seam hydraulic punching simulation experiment method

Abstract

The invention relates to a coal seam hydraulic punching simulation experiment method. An experiment device comprises a coal pressing column head, a coal storage cylinder body, a press machine, an experiment pump machine, an electric coal drill, an experiment gas cylinder, a pressure sensor and a pressure detector, the coal pressing column head is arranged above the coal storage cylinder body, and a pressing head on the lower part of the coal pressing column head is matched with an inner cavity of the coal storage cylinder body; a press machine is arranged on the coal pressing column head, an inflation pipe is arranged on the side wall of the coal storage cylinder body, the inflation pipe can be connected with an experiment gas cylinder to inflate the coal storage cylinder body, the electric coal drill can drill a simulated coal seam in the coal storage cylinder body, and the experiment pump machine can perform a hydraulic punching experiment on the coal seam after hole forming. The pressure detector is connected with the pressure sensor arranged in the coal seam and monitors the pressure of each layer in real time. The coal seam hydraulic punching process is reasonably simulated, a reliable experimental device and an experimental method are provided for subsequent experiments, and reliable theoretical basis and method measures are provided for actual construction.

Description

technical field [0001] The invention relates to the technical field of a coal seam hydraulic punching experiment device, in particular to a coal seam hydraulic punching simulation experiment method. Background technique [0002] At present, coal seams contain a large amount of coalbed methane, also known as gas, which is not only a valuable resource, but also an important part of the potential of coal and gas in underground coal mining. my country is a country with large coal resources. With the rapid development of the coal industry , the amount of gas gushing out increased sharply, and coal mine accidents caused by gas outbursts and explosions rose rapidly. At the same time, coal bed methane is a high-quality and clean fuel. If it is properly developed, recycled and utilized, it can not only reduce the number of coal mine accidents occurrence, guarantee the normal production of coal mines, and can also solve the problem of energy shortage in our country. However, my country...

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Problems solved by technology

Although these seepage simulation experiments have explained the influence of various influencing factors on the flow of coalbed methane to a certain extent, in view of the complexity of coalbed methane mining work, these simulation states are far from the actual situation on site, and cannot fully explain the actual situation. The coalbed methane extraction under the condition is affected by various factors

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