Method for coal mine gas geology dynamic analysis based on GIS

Abstract

The invention discloses a method for coal mine gas geology dynamic analysis based on GIS. In the method, based on a GIS platform, a gas geological analysis method is used to dynamically establish a gas geology mathematic model of content of gas and geological effective factors, and gas content, pressure, and other gas information is dynamically calculated and updated on the basis of dynamic variation of the effective factors. Combining with influence of geologic structure, protective layer mining, and gas extraction on gas, dynamic analysis of gas contents, pressure, and coal and gas outburst risks of coal seams in different regions of a coal mine. The method realizes dynamic analysis and calculation update of coal mine gas geological information, changes current situations that an existing technology is lack of spatial data analysis and cannot reflect geological information in time, the method is beneficial for a coal mine management layer to master gas dynamic information in time, and provides decision support for gas disaster prevention and cure, and improves gas disaster prevention and cure capability of a mine.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety, and in particular relates to a GIS-based geological dynamic analysis method for coal mine gas. Background technique [0002] my country is the largest coal-producing country in the world, and the dominant position of coal resources in my country's energy structure will be difficult to change for a long period of time. At the same time, my country is also one of the countries with serious coal mine gas disasters. There are many coal and gas outburst mines and high gas mines, and they are widely distributed; especially with the increase of mining depth, the difficulty of gas control is gradually increasing, seriously affecting the Safe and efficient production of coal mining enterprises. Coal seam gas content, pressure and other parameters are one of the important parameters for coal mine gas comprehensive control and prediction of coal and gas outburst risks, which have important guiding ...

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Problems solved by technology

[0003] At present, the distribution of coal mine gas is analyzed and predicted by the method of gas geological analysis, and the influence of geological factors on gas is analyzed by studying the influence of geological factors, and its expression is generally a static gas geological map; in addition, the current coal mine geology and gas data are also Most of them are expressed in the form of static text reports, CAD graphics, etc., with a large amount of data, lack of effective expression and analysis of spatial data, and cannot be updated in time with the "extraction, excavation, mining" process, and cannot be reflected in time The latest changes in gas geological information make it difficult to conduct in-depth mining research on data laws

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