Quantitative evaluation method for coal-bed top-plate water burst (inrush) conditions

A coal seam roof, quantitative evaluation technology, applied in the direction of earthwork drilling, geophysical measurement, instruments, etc., can solve the problem of deteriorating production environment of the working face

Inactive Publication Date: 2010-03-03
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

However, with the gradual increase of mining depth and the mining of lower groups of coal, there are more and more examples of roof surges (outbursts) caused by roof caving communicating with the overlyin

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  • Quantitative evaluation method for coal-bed top-plate water burst (inrush) conditions

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] The specific implementation technical scheme of the quantitative evaluation method of a kind of coal field coal industry coal seam roof surge (outburst) water condition of the present invention comprises the following steps:

[0020] 1. Based on the systematic and comprehensive analysis of mine hydrogeological conditions, find out the main water-filled aquifers closely related to the coal seam roof water inrush, and analyze and determine the water-filled aquifers directly on the coal seam roof.

[0021] 2. Draw the water-rich zoning map of the directly water-filled aquifer on the roof of the coal seam:

[0022] The water-rich zoning map of the directly water-filled aquifer on the coal seam roof is formed on the basis of the research on the water-rich zoning of the directly water-filled aquifer on the coal seam roof.

[0023] The water-rich zoning research of ...

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Abstract

The invention relates to a quantitative evaluation method for coal-bed top-plate water burst (inrush) conditions in coalfield and coal industry, which comprises the following steps: on the basis of systematic and comprehensive analysis on the geohydrologic conditions of a mine, finding direct and indirect water bearing layers closely related to the coal-bed top-plate water inrush, drawing a wateryarea chart and an inbreak safety area chart, and drawing a water burst (inrush) condition comprehensive area chart by combining all geoscience information of the two areas; and dynamically predictingthe pre-exploration pre-evacuation proposal of the project water burst quantity and the top-plate direct bearing layer of the stope by using Visual Modflow professional software. From the quantitative and comprehensive analysis on the water burst (inrush) conditions to the quantitative simulated prediction on the water burst (inrush) quantity and the pre-exploration pre-evacuation quantity, the three-chart two-prediction method forms a whole set of systematic research train of thought and research methods, and has certain advantages in the whole and sectional project water burst quantities ofthe stope having higher requirements on prediction precision.

Description

Technical field [0001] The invention relates to a quantitative evaluation method for the water inrush (outburst) condition of the coal seam roof in the coalfield coal industry, in particular to a quantitative evaluation method for the water inrush (inrush) condition in the coal seam roof of the North China type coal field. Background technique [0002] Water inrush from the coal seam floor has always been the main flood problem that plagues the sustainable development of the coal industry in North China-type coalfields. The roof water problem can be solved by leaving effective waterproof coal pillars. However, with the gradual increase of mining depth and the mining of lower groups of coal, there are more and more examples of roof surges (outbursts) caused by roof caving communicating with the overlying aquifer or deteriorating the production environment of the working face. For example, Kailuan Mining Bureau At present, nearly half of the production mines are seriously thre...

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Application Information

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IPC IPC(8): E21C41/16G01V9/00
Inventor 武强
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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