Top plate supporting method

A roof support and roof technology, which is applied in the field of coal mines, can solve the problems of low support strength, uneven force on the roof of the roadway, and great potential safety hazards for working face retraction, so as to ensure the strength of the anchor cable support and increase the stability. , the effect of improving the support strength

Inactive Publication Date: 2020-01-17
SHENHUA SHENDONG COAL GRP
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  • Claims
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Problems solved by technology

However, affected by the installation of stacked brackets in the main withdrawal channel, the anchor cable support design of the roof in the channel needs to avoid stacked brackets. The overall stress on the roof of the roadway is uneven, and the support strength is low. The sinking of the roof of the channel is large, and the safety hazard of the retreat of the working face is great

Method used

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Embodiment Construction

[0019] The technical solution of the present invention will be described in detail below with reference to the drawings and specific embodiments. The same parts are indicated by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" "Respectively refers to the direction toward or away from the geometric center of a particular component.

[0020] figure 1 Shows the flow chart of the roof support method provided by the embodiment of the present invention, such as figure 1 As shown, the roof support method provided by the embodiment of the present invention is suitable for the support of the roof of the large section main withdrawal channel in a shallow buried thick coal seam, where the shallow buried depth can be less than 200 meters deep, and the thick coal seam can be thicker than 5 Meters of coal seam.

[0021]...

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Abstract

The embodiment of the invention discloses a top plate supporting method. The top plate supporting method comprises the steps that longitudinal anchor rope drill holes are formed in a top plate to be supported over a cog timbering; the longitudinal anchor rope drill holes are expanded to form longitudinal expanded drill holes; longitudinal anchor ropes are inserted into the longitudinal expanded drill holes, and longitudinal locks fixedly connected with a longitudinal tray are put into the longitudinal expanded drill holes; and the longitudinal anchor ropes are fastened. By means of the top plate supporting method, the issue that anchor ropes lose efficiency as the supporting anchor ropes are damaged by a cog timbering can be avoided, and the anchor rope supporting strength can be ensured;and the top plate is supported by the anchor rope supporting and the cog timbering together in retracement run-through, the supporting strength of the top plate is improved, the stability of the top plate is improved, and positive mirror significance for achieving supporting of the top plate of a shallow-buried deep and thick coal layer large section main retracement channel is achieved.

Description

Technical field [0001] The invention relates to the technical field of coal mines, in particular to a roof support method. Background technique [0002] At present, the roof of the main retreat channel with large section in fully mechanized mining face mainly adopts the anchor cable support technology, and the support parameters and support technology of this technology are mature. However, due to the installation of the stack support in the main retracement channel, the roof anchor cable support design in the channel needs to avoid the stack support. The overall force of the roadway roof is uneven and the support strength is low. The roof of the channel has a large sinking amount, and the safety hazard of the working face is large. Summary of the invention [0003] In view of this, the embodiment of the present invention proposes a roof support method to solve the above technical problem. [0004] The embodiment of the present invention provides a roof support method, which inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/00E21D20/02E21D11/15
CPCE21D11/152E21D11/155E21D20/003E21D20/025
Inventor 杨俊哲田银素王富强李杰王春雷曹建云李雪佳
Owner SHENHUA SHENDONG COAL GRP
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