Coal-mine gas geology four-dimensional analysis method

A technology of coal mine gas and analysis method, which is applied in the field of four-dimensional analysis of coal mine gas geology, can solve the problems of single gas parameter acquisition technology means, difficult measurement and manual work, etc., and achieve the effect of improving technology and reducing workload

Inactive Publication Date: 2013-03-27
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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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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Experimental program
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Effect test

Embodiment 1

[0030] figure 1 The flowchart of the four-dimensional analysis method for coal mine gas geology provided by the present invention is shown in the figure: the four-dimensional analysis method for coal mine gas geology provided by the present invention includes the following steps:

[0031] S1: Acquire sedimentary environment data, geological structure data and hydrocarbon generation history data, determine the state of gas enrichment and preservation in the study area, the main controlling factors of gas occurrence and the degree of risk of coal and gas outburst;

[0032] S2: Divide the gas geological units according to the state of gas enrichment and preservation, the main controlling factors of gas occurrence, and the degree of risk of coal and gas outburst; the division of gas geological units in the step S2 is carried out in the following manner:

[0033] When the mine has large anticlines and synclines, it is divided into different gas geological units based on the axes of...

Embodiment 2

[0045] This embodiment 2 explains in detail the specific implementation process of the application of the coal mine gas geological four-dimensional analysis method:

[0046] The four-dimensional analysis method of coal mine gas geology provided by the present invention includes theoretical data analysis, division of gas geological units, arrangement and acquisition of gas parameter measuring points, and establishment of a mathematical model of gas occurrence; including the following steps:

[0047] S1: Obtain data such as sedimentary environment, geological structure and hydrocarbon generation history, and determine the gas enrichment and preservation in the study area, the main controlling factors of gas occurrence, and the degree of risk of coal and gas outburst through analysis;

[0048] Gas occurrence in coal seams and coal and gas outburst disasters in coal mines are mainly affected by sedimentary environment, geological structure, thermal evolution history, and hydrocarbo...

Embodiment 3

[0073] This Example 3 takes the Shuicheng mining area as an example to illustrate the specific implementation of the four-dimensional analysis method of coal mine gas geology in the application of the gas occurrence law in the main coal seam of the Shuicheng mining area:

[0074] Guizhou Shuicheng Mining (Group) Co., Ltd. (hereinafter referred to as "Shuicheng Mining Area") is a comprehensive large-scale enterprise group integrating coal, power generation, coal chemical industry and other industries. The coal measure strata in the Shuicheng mining area are the Upper Permian Longtan Formation (Xuanwei Formation), and the mineable and partially recoverable coal seams are: 1 ＃ 、4 ＃ 、7 ＃ ,8 ＃ 、11 ＃ 、12 ＃ 、13 ＃ , 14-1 ＃ , 14-2 ＃ 、17 ＃ 、28 ＃ No. coal seam. The mining areas include Shengyuan Coal Mine, Dawan Coal Mine, Naluozhai Coal Mine, Wangjiazhai Coal Mine, Dahebian Coal Mine, Hongqi Coal Mine and Laoyingshan Coal Mine.

[0075] The Shuicheng mining area has experienc...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V9/00
Inventor 胡千庭文光才董国伟赵旭生张庆华邹银辉崔俊飞覃木广林辉钦王麒翔唐韩英韩文骥邓敢愽张轶
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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