Method for accurate detection of geologic structures and division of coal and gas outburst areas

A regional division method and geological structure technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as rising, and achieve the effects of improving effectiveness, easy implementation, and improving safety and social benefits

Active Publication Date: 2012-06-20
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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Problems solved by technology

At present, there is no effective way to prevent and control "coal and gas outburst" in the world. With the increase of mining depth, "coal and gas outburst" accidents are on the rise

Method used

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  • Method for accurate detection of geologic structures and division of coal and gas outburst areas

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Embodiment Construction

[0021] Preferred embodiments of the present invention will be described in detail below. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.

[0022] Method of the present invention comprises the following steps:

[0023] 1) According to the detailed mine geological survey report, extract relevant data from it and input it into the computer, and delineate the scope of the geological structure area of ​​the mine field;

[0024] 2) Draw the actual contour map of the coal seam floor by computer;

[0025] Include the following sub-steps:

[0026] 2.1) First extract the drilling parameters stored in the directional drilling machine, and draw the drilling trajectory map;

[0027] 2.2) Then calculate the actual elevation of the coal seam according to the measured coordinates of the directional long borehole and the drilling trajectory, and then draw the actual co...

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Abstract

The invention discloses a method for accurate detection of geologic structures and division of coal and gas outburst areas. The method includes steps: firstly, circling an underground mine field geologic structure area coverage according to a mining geologic sifting report; secondly, drawing a practical contour map of a coal bed bottom plate; thirdly, precisely determining abnormal areas of a working plane; fourthly, analyzing coal bed methane states and geologic structures by means of the contour map and the abnormal areas, and predicting geological conditions and structure changing conditions of excavation sites according to the fact that changing of the geologic structures follows the geologic structure evolution law; and fifthly, evaluating dangers of outburst areas of the geologic structures according to structure types, and grading dangers of the geologic structure areas. The method is easy to implement, coal bed structures can be detected accurately, and thereby effectiveness of prevention measures for mine gas can be improved evidently, and the method has great practical significances in improvement of mine safety and social benefits.

Description

technical field [0001] The invention relates to the field of coal mine safety, in particular to a method for accurately detecting the geological structure of underground coal seams in coal mines and dividing the danger of coal and gas outburst areas in outburst mines. Background technique [0002] "Coal and gas outburst" is extremely harmful. At present, there is no effective way to prevent and control "coal and gas outburst" in the world. With the increase of mining depth, "coal and gas outburst" accidents are on the rise. 60%~70% of coal mines in my country are mined under complex and extremely complex structural conditions. Studies have shown that the uneven distribution of coal and gas outbursts is related to geological factors, and geological structures are the dominant factor controlling the distribution of coal and gas outbursts. Geological structures affecting coal and gas outburst include folds, joints, faults, structural coal layers, changes in coal seam thickness,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 胡千庭文光才杜子健孙东玲周厚权张志刚陈宾杨利平董洪凯袁德权李树彬
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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