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Coal mine tunnel supporting method

A technology for roadway support and coal mine roadway, which is applied in mining equipment, earthwork drilling, installation of bolts, etc. The effect of strengthening the support effect and improving the stability

Pending Publication Date: 2022-02-08
山西中煤担水沟煤业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in the prior art that the roof caving occurs due to insufficient support strength, causing casualties and property losses in the mine, the present invention provides a coal mine roadway support method

Method used

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  • Coal mine tunnel supporting method

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Embodiment Construction

[0032] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0033] The present embodiment provides a coal mine roadway support method, comprising the following steps:

[0034] S1: Excavate the roadway according to the actual geological conditions of the coal mine.

[0035] S2: Determine the impact risk zone in the roadway, and then determine that the basic support range of the roadway is 200-250m ahead of the current working face, preferably 200m.

[0036] S3: Drill anchor cable holes in the impact dangerous area, and drill anchor bolt holes in the non-impact dangerous area.

[0037] S4: Install anchor cables and anchor rods into the anchor cable holes and anchor rod holes in the impact dangerous area and non-impact dangerous area respectively, and the tops of the anchor cables and anchor rods pass through the coal sea...

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Abstract

The invention relates to a coal mine roadway supporting method. The coal mine roadway supporting method comprises the following steps that S1, a roadway is excavated; S2, an impact danger area is determined, and then it is determined that the basic supporting range is 200-250 m in front of a current working face; S3, anchor cable holes and anchor rod holes are drilled in the impact danger area and the non-impact danger area correspondingly; S4, anchor cables and anchor rods are installed in the anchor cable holes and the anchor rod holes correspondingly, and top ends of the anchor cables and top ends of the anchor rods penetrate through the coal seam in the roadway and are fixed to the bedrock layer; S5, the anchor cables and the anchor rods are fixed through the trays, and basic supporting is completed; and S6, advance supporting is carried out to support a top plate of the roadway, and the advance support range is 200-250m in front of the current working face. According to the method, the basic supporting range and the advance supporting range are expanded, the ranges can cover the affected area in the coal mining process, and the roof caving accident can be effectively prevented. In addition, in the basic support, the anchor rods and the anchor cables are directly fixed to the firm bedrock layer, and support stability can be further improved.

Description

technical field [0001] The invention belongs to the technical field of roadway construction, and in particular relates to a method for supporting the roof of a coal mine roadway. Background technique [0002] The roof rock fall accident in the mining work space or other underground working sites is called roof fall. At present, the roof fall in mines causes casualties and property losses every year. Significance. [0003] In the actual coal mining process, when controlling the roof fall, it is necessary to grasp the causes of common roadway roof fall accidents. There are many common reasons for roof fall accidents, and the lack of roadway support strength caused by poor support schemes is a common one. reason. [0004] Therefore, roof caving accidents caused by insufficient roadway support strength need to be avoided, and it is urgent to propose a roadway support method that can meet the actual production needs. Contents of the invention [0005] (1) Technical problems ...

Claims

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Application Information

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IPC IPC(8): E21D20/00E21D20/02E21D21/00
CPCE21D20/003E21D20/025E21D21/0026E21D21/008E21D21/0086
Inventor 张有前裴志毅毛怀勇王正孔令强
Owner 山西中煤担水沟煤业有限公司
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