Method for monitoring coal bed gas parameter in real time

Abstract

The invention discloses a device for monitoring a coal bed gas parameter in real time. The device is composed of a hole packer, a gas parameter sensor, a data collection instrument and a booster pump, wherein the hole packer is composed of a supporting steel pipe, a hole sealing capsule, a front cover, a pressurized pipe, a gas pipe and a propelling movement rod; the gas parameter sensor mainly comprises a gas pressure sensor, a flow sensor and a gas temperature sensor; the data collection instrument mainly comprises an A / D conversion circuit and a CPU (central processing unit) processor; and the CPU processor is respectively connected with a program memory, a display, an operation keyboard, an RS232 communication circuit, a data memory and a standard signal output interface. A pressurized pump pressurizes the hole sealing capsule to cause the hole sealing capsule to expand and seal holes. The gas parameter sensor senses each parameter of the gas, the data collection instrument collects corresponding data, and the gas parameter of the coal bed can be quickly and accurately monitored in real time. The device has a method and is easy to operate in field, the basic parameters of the coal bed gas can be accurately measured, and the dynamic variation of the coal bed gas parameters can be monitored in real time.

Description

technical field [0001] The invention relates to a real-time monitoring method for coal seam gas parameters, belonging to the technical field of mine gas control monitoring. It is suitable for coal seam gas parameter determination, coal and gas outburst risk prediction, coal seam gas drainage effect evaluation and parameter optimization, and coal seam outburst elimination effect inspection. Background technique [0002] More than 50% of the original state-owned key coal mines in my country are high-gas or coal and gas outburst mines. As the depth of mining increases, the gas content of coal seams gradually increases, and at the same time, the gas pressure also increases with the increase of mining depth, and gas disasters become more serious. Seriously. During the production process, with the progress of mining activities, due to the original in-situ stress and the concentration of mining stress, the gas permeability of the coal body changes sharply, which creates conditions ...

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Problems solved by technology

[0004] At present, there is no real-time monitoring device for gas parameters in coal seams in China. Therefore, it is very necessary to develop a device and method that can monitor the dynamic changes of gas parameters in coal seams in real time for safe production in coal mines.

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