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Low-coal-seam high-grade conventional mining opposite-pulling mining face bracket system and bracket moving method thereof

A technology for pulling the working face and support system, which is applied in the direction of pillars/supports, mining equipment, earth square drilling and mining, etc., to achieve a stable support effect

Active Publication Date: 2020-07-28
BEIJING ZHONGKUANG INNOVATION ALLIANCE ENERGY & ENVIRONMENTAL SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to adopt an effective support method for the upper and lower working faces and the four ends has become an important factor to prevent damage to the roof of the working face and ensure the safety of coal mining work. The existing support arrangement and moving method are not suitable for the N00 construction method

Method used

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  • Low-coal-seam high-grade conventional mining opposite-pulling mining face bracket system and bracket moving method thereof
  • Low-coal-seam high-grade conventional mining opposite-pulling mining face bracket system and bracket moving method thereof
  • Low-coal-seam high-grade conventional mining opposite-pulling mining face bracket system and bracket moving method thereof

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Embodiment Construction

[0038] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0039] The new technology of N00 mining method without coal pillar self-forming roadway does not need to excavate the mining roadway in advance when coal is mined underground, but uses a series of key technologies and supporting equipment to realize the formation of the mining roadway in the process of coal mining at the working face.

[0040] The present invention firstly provides a support system for a thin coal seam high-gr...

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Abstract

The invention relates to the technical field of coal mining, and provides a low-coal-seam high-grade conventional mining opposite-pulling mining face bracket system and a bracket moving method thereof. According to the low-coal-seam high-grade conventional mining opposite-pulling mining face bracket system, a part, close to an air return roadway and a haulage roadway, of a mining face is an end head part; the bracket system comprises multiple point stand column brackets and multiple groups of end head brackets; the multiple point stand column brackets are arranged on the mining face; and the multiple groups of end head brackets are arranged at the end head part, and comprise multiple first single hydraulic props and a steel beam arranged at one ends, close to a top plate, of the multiple first single hydraulic prop. Different support structures are adopted for the mining face and the end head part; and in addition, a structure with the combination of the multiple first single hydraulicprops and the steel beam is adopted for supporting the end head part, so that the occurrence of the phenomenon that the mining face and the end head top plate fall over to break the roadways is prevented, the low-coal-seam high-grade conventional mining opposite-pulling mining face bracket system is suitable for an N00 construction method, and a supporting effect is more stable.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a support system for a high-grade common mining counter-drawing working face in a thin coal seam and a method for moving the support system for a high-grade general mining counter-drawing working face in a thin coal seam. Background technique [0002] In the process of underground coal mining, the double-pull working face is one of the layout methods of the coal mining face. It is the transportation roadway in the middle shared by the two working faces. The coal mined at the upper working face is downward, and the coal mined at the lower working face It is transported up to the transportation roadway, and then transported to the mining area by the transportation roadway for transportation up the mountain. [0003] When arranging the high-grade general mining counter-drawing working face under the N00 construction method in the thin coal seam, the upper return air roadway and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D15/44E21D17/00E21D15/60
CPCE21D15/44E21D15/606E21D17/00
Inventor 何满潮吴群英王亚军闵铁军
Owner BEIJING ZHONGKUANG INNOVATION ALLIANCE ENERGY & ENVIRONMENTAL SCI RES INST
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