Novel tunnel anchor cable/rod support method

A new method, technology of roadway, applied in the installation of bolts, earth-moving drilling, mining equipment, etc.

Inactive Publication Date: 2009-07-15
卢泉生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a solution to the problems that occur in the roof of the roadway and the support of the side wall of the coal seam in the process of coal safety production, and the present invention is realized in this way

Method used

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  • Novel tunnel anchor cable/rod support method

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Embodiment Construction

[0006] The present invention will be further described in detail below with reference to the embodiments of the accompanying drawings, as shown in the accompanying drawings: the anchor cable (rod) 5 supporting the roof 1 of the rock mass in the roadway 3 and the two walls 2 of the coal seam is characterized by the new method of supporting The matrix-shaped hole drilling method of the rock mass roof surface 1 perpendicular or in the same direction to the roadway section I and II is changed to the plum blossom-shaped hole drilling method inclined to the two walls 2 of the roadway section. The inclination angle of the drilling holes in face 1 is staggered with each row, that is, the inclination angle of the drilling holes in this row is opposite to the direction of the adjacent two rows; the original drilling method perpendicular to the coal seam wall 2 is changed to the upward inclined drilling method . Use the top of the anchor cable (rod) 5 to push the resin charge 4 to the bottom...

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Abstract

The invention relates to the technical field of a coal mine downhole extracting working face roadway support. In the existing roadway support anchor, the phenomenon of insufficient locking force is general; the rock surface of the roadway is uneven; and the bearing contact surface of a pallet surface is point-typed stress. The invention is characterized in that an original matrix-shaped hole-distributing drilling method in which the drilling direction is perpendicular to or homodromous with the cross-section of a roadway 3 is changed into a quincunx-shaped hole-distributing drilling method in which the drilling direction is tilted to the cross-section slope wall of the roadway, moreover, the drilling inclination angle of a rock mass top plate 1 is staggered row by row, namely, the drilling inclination angle the row is opposition to the direction of neighboring two rows; and the drilling directions of two slope walls 2 of the roadway cross-section are tilted upwards. The top end of an anchor cable (rod) 5 is used for pushing a resin explosive roll 4 to the drilling bottom of the rock mass top plate 1 and the slope walls 2 and then being fixed into a whole by stirring, later sleeved in a rubber wedge plate 6, a steel strip fictitious graticule 7 and a hemispheric concave hole pallet 8, and next locked by a hemispheric convex nut 9, so as to cause the anchoring contact surface among the anchor cable (rod) 5 and the rock mass top plate 1 and the slop walls 2 to be larger and firmer with stronger reliability and stability. Finally, reflective paint 10 is coated and brushed at the external end part of the anchor cable (rod).

Description

Technical field [0001] The invention specifically relates to a new roadway support method, which belongs to the technical field of coal mine safety and production, and is suitable for roadway support in underground coal mining faces. Background technique [0002] As far as the inventor knows, the roadway support of the mining face in coal safety production is a very important work link. The quality and quality of the roadway support directly affect the safety and production of the coal mine. At present, the tunnel support of the underground mining face of the coal mine adopts matrix positioning drilling perpendicular to the cross section of the roof rock mass and the side wall of the coal seam. After drilling a certain depth, insert the resin cartridge, insert the anchor cable (rod), and prestress The traditional support and anchorage of tensioning and anchoring the top, installation of steel belt warp and weft, flat pallet and ordinary nut locking. When drilling in a vertical or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/00
Inventor 卢泉生
Owner 卢泉生
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