Gangue-filling coal mining method for sharp inclined coal seam under flexible shield support

A steeply inclined, flexible shielding support technology, applied in the fields of backfill, underground mining, surface mining, etc., can solve the problems of large backfill system, collapse of mining area, and high pre-investment, to simplify the backfill process, reduce the workload of frame adjustment, The effect of large filling capacity

Active Publication Date: 2014-04-23
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

There are obvious deficiencies in the above two methods: first, the process is complicated, and many processes are required in the filling process, which

Method used

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  • Gangue-filling coal mining method for sharp inclined coal seam under flexible shield support
  • Gangue-filling coal mining method for sharp inclined coal seam under flexible shield support
  • Gangue-filling coal mining method for sharp inclined coal seam under flexible shield support

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Embodiment Construction

[0018] The present invention provides a coal mining method in which steeply inclined coal seam softly covers and supports descending gangue filling. In order to make the purpose, technical scheme and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] The present invention provides a kind of coal mining method of softly covering and supporting descending gangue filling in the steeply inclined coal seam, such as figure 1 , figure 2 and image 3 As shown, it includes the following steps:

[0020] Step 1: divide the coal seam into several sub-zones along the inclination direction of the coal seam, and the sub-zone width is generally 40-80m;

[0021] Step 2: Excavate the floor road 2 on the coal seam floor of each sub-zone, which is used for the mine ca...

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Abstract

The invention provides a gangue-filling coal mining method for a sharp inclined coal seam under flexible shield support. The method comprises the steps of distributing working faces corresponding zones in a downhill mining mode, dropping coal by adopting an air pick, supporting the working face by using the corresponding flexible shield support to form a working space, and filling gangues above the flexible shield support through the corresponding floor tunnel along with the gradual mining operation to a coal body which is positioned below the working face, so as to enable the corresponding flexible shield support to be sunk under the dead weight and the weight of the covered gangues and form a mode of mining while filling, wherein trenches are distributed in the working faces corresponding to the zones, workers work in the trenches, produced coal is pushed to inclined coal dropping roadways corresponding to the zones by a scraper bucket and drops into a coal bunker at the underside, and then the coal is transported to a mining area through a haulage roadway after being loaded in a mine car. The flexible shield support does not need to be removed and lengthened for multiple times during mining, the filling procedure is simplified, the filling cost is reduced and the labor intensity of workers is reduced.

Description

technical field [0001] The invention relates to a coal mining method for softly covering and supporting downward gangue filling in steeply inclined coal seams. Background technique [0002] As mine mining develops into deeper and more complex coal seams, the surrounding rock pressure of production working faces and roadways becomes more complex, the deformation is more serious, and the support is more difficult, which seriously affects the production safety of coal mines. Especially when mining the "three lower" coal seams, it is very important to increase the control of the roof. With the continuous development of mining technology, filling mining has been recognized and utilized by more and more coal mining enterprises, and has achieved good benefits. However, in some mines, the coal seam that is pressed into the coal seam belongs to the steeply inclined coal seam. The existing methods for mining the steeply inclined coal seam mainly include: the inverted step coal mining...

Claims

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Application Information

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IPC IPC(8): E21C41/18E21F15/00
Inventor 臧传伟翟永胜谭云亮庄学安张礼
Owner SHANDONG UNIV OF SCI & TECH
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