Coal-mine gas geology four-dimensional analysis method

Abstract

The invention discloses a coal-mine gas geology four-dimensional analysis method. The method includes acquiring depositional environment data, geologic structure data and hydrocarbon generating history data, and determining a gas enrichment save state, a gas occurrence main controlling factor and a coal and gas outburst risk degree in a study area; then performing gas geology unit division and testing point arrangement; and finally establishing a gas occurrence mathematical model and forming a gas geologic map. According to the coal-mine gas geology four-dimensional analysis method which is established from four-dimensional angles of space ( an area or a layer ) and time, original coal-mine gas geology analysis methods are broken through; the difference problems of gas occurrence or coal and gas outburst disasters on different coal layers, which can not be explained by traditional gas geological theories under same geologic structure conditions on the layer, are solved; and area and layer analysis of coal-mine gas geologies is achieved, problems that a gas geology unit is difficult to divide and different persons acquire different results according to the same data are solved, the work loads of gas geology analysis are reduced, and the guide of safety production is truly achieved.

Description

technical field [0001] The invention relates to the field of coal mine gas prevention and control, in particular to a coal mine gas geological four-dimensional analysis method. Background technique [0002] According to the research status and analysis at home and abroad, the traditional gas geological analysis method is not suitable for the mining work. The traditional gas geological analysis mainly analyzes the impact of geological structure on gas occurrence or coal and gas outburst disasters from the perspective of the plane area, and cannot explain the vertical Under the same geological structure, different coal seam gas occurrences or coal and gas outburst disasters are different; the traditional gas geological analysis method has no perfect and clear gas geological unit division technology, and the traditional gas geological analysis method has no clear gas parameter measurement point layout technology , The gas parameter acquisition technology in the traditional gas ...

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Problems solved by technology

[0002] According to the research status and analysis at home and abroad, the traditional gas geological analysis method is not suitable for the mining work. The traditional gas geological analysis mainly analyzes the impact of geological structure on gas occurrence or coal and gas outburst disasters from the perspective of the plane area, and cannot explain the vertical Under the same geological structure, different coal seam gas occurrences or coal and gas outburst disasters are different; the traditional gas geological analysis method has no perfect and clear gas geological unit division technology, and the traditional gas geological analysis method has no clear gas parameter measurement point layout technology , The gas parameter acquisition technology in the traditional gas geological analysis method has the problems of single means, slow data acquisition, poor data accuracy and difficult acquisition. The traditional gas geological results are characterized by manual and non-real-time performance. Or coal and gas outburst predictions do not correspond to mining work

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