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Under-building, under-railway and under-water mining filling process

A process and goaf technology, which is applied to filling materials, mining equipment, earth cube drilling and mining, etc., can solve the problems of low recovery rate and inability to effectively fill the goaf, and achieve high recovery rate, reasonable use of gangue, and ecological protection. Harmony with society

Active Publication Date: 2013-01-09
晋能控股装备制造集团金鼎山西煤机有限责任公司
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Problems solved by technology

[0004] The present invention provides a "three down" mining and filling process to solve the technical problems of low recovery rate and inability to effectively fill goafs in the current "three down" mining technology of coal mines.

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  • Under-building, under-railway and under-water mining filling process

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Embodiment Construction

[0011] A "three-down" mining and filling process, comprising the following steps: (a) Excavating a belt return airway 4 and a track air inlet 7 on both sides parallel to the coal seam 9 to be mined; the belt return airway 4 The direction of the track air inlet lane 7 is parallel to the mining direction 6; (b) excavate a gangue return air lane parallel to the belt air return lane 4 along the side of the belt return air lane 4 that is not adjacent to the coal seam 9 to be mined 1. The coal seam between the gangue return airway 1 and the belt return airway 4 forms a coal wall; (c) mining the coal seam 9 to be mined, and at the same time between the gangue return airway 1 and the belt return airway 4 The coal wall in the middle is perpendicular to the gangue return airway 1, and the contact Hengchuan 2 connected with the goaf 5 formed after mining is excavated, and the gangue is transported to the excavated contact Hengchuan 2 through the gangue return airway 1 (d) Carry out coal ...

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Abstract

The invention relates to a coal mining process, in particular to an under-building, under-railway and under-water mining filling process, and solves the technical problems that the recovery ratio is low and a god cannot be filled effectively in the conventional coal mining technology. The under-building, under-railway and under-water mining filling process comprises the following steps of: (a) respectively tunneling a belt air return lane and a railway air inlet lane on the two sides parallel to a coal seam to be mined; (b) tunneling a waste rock transportation and air return lane along one side of the belt air return lane; (c) performing recovery on the coal seam (9) to be mined, and simultaneously, digging a contact channel perpendicular to the waste rock transportation lane on a coal pillar between the waste rock transportation and air return lane and the belt air return lane; (d) performing coal waste rock filling operation on the gob to finish a work cycle; and (e) repeating the work cycle continuously until all gobs are filled. The under-building, under-railway and under-water mining filling process is suitable for comprehensive mechanized coal mining of large and medium-sized coal mines and high in recovery rate; waste rock is utilized reasonably; and the harmony of ecology and production in a mine area is realized.

Description

technical field [0001] The invention relates to a coal mining process, in particular to a "three-down" mining and filling process. Background technique [0002] In most of the coal mines in our country, there are serious problems of "three under" (under the building, under the railway, under the water body) coal pressure, which restricts the development of the mine. Due to the impact of mining on the stability of ground buildings and railways, as well as the safety of underground operations, special mining techniques are required for coal mining in the "three downs". Such special mining techniques are referred to as It is the "three down" mining technology. Although the currently commonly used strip coal mining method is an important method for mining "three-down" compressed coal, it cannot be widely promoted due to its low recovery rate and its unsuitability for the installation and use of fully mechanized mining equipment in large and medium-sized coal mines. However, th...

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Application Information

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IPC IPC(8): E21F15/00E21F1/08
Inventor 赵俊杰张成成张志鹏魏广程鹏
Owner 晋能控股装备制造集团金鼎山西煤机有限责任公司
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