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Strong-side and strong-corner coal entry anchor rod support method

A bolt support and support bolt technology, which is applied to the installation of bolts, earthwork drilling, mining equipment, etc., can solve the problems of poor roadway integrity and large deformation, and achieve faster tunneling speed, reasonable force, and improved The effect of stability

Inactive Publication Date: 2010-12-15
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing coal roadway support design basically focuses on the roof, there are one-sided lengthening, encryption, and reinforcement of the top anchor rod and top anchor cable, the integrity of the roadway is poor, the amount of deformation is large, and accidents occur from time to time

Method used

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  • Strong-side and strong-corner coal entry anchor rod support method
  • Strong-side and strong-corner coal entry anchor rod support method
  • Strong-side and strong-corner coal entry anchor rod support method

Examples

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Embodiment Construction

[0011] The bolt support method of strong side and strong angle coal roadway of the present invention, its preferred specific implementation mode is as follows image 3 As shown, it includes a plurality of top anchor rods and top anchor cables arranged on the roof of the roadway and a plurality of side anchor rods and side anchor cables arranged on the side wall of the roadway. The top anchor rods and top anchor cables 3 on both sides of the roadway are inclined 15°-30° to the outside of the roadway respectively.

[0012] Among the multiple side anchor rods and side anchor cables, the uppermost layer of side anchor rods and side anchor cables 4 can also be inclined upwards by 15°-30°.

[0013] Among the multiple side anchor rods and side anchor cables, the bottom layer side anchor rod and side anchor cables 5 can also be inclined downward by 15°-30°.

[0014] The length l of the anchor rod satisfies: In the formula, H is the height of the side of the lane, in meters; is th...

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Abstract

The invention discloses a strong-side and strong-corner coal entry anchor rod support method. The anchor bolt support comprises a plurality of top anchor rods and top anchor cables which are arranged on a roadway top plate, and a plurality of side anchor rods and side anchor cables which are arranged on the side wall of a roadway. In the plurality of top anchor rods and top anchor cables, the top anchor rods and the top anchor cables close to both sides of the roadway are respectively inclined for 15-30 degrees towards the outer side of the roadway; and in the plurality of side anchor rods and side anchor cables, the side anchor rods and the side anchor cables on the upper most layer are upwards inclined for 15-30 degrees, and the side anchor rods and the side anchor cables on the lower most layer are downwards inclined for 15-30 degrees. The invention greatly improves the support effect of the coal entry and the integral stability of the roadway, reduces the deformation and the plastic failure zone of the roadway, guarantees the safety of the roadway, reduces the cost and the maintenance difficulty of the roadway support and improves the advance rate of the roadway.

Description

technical field [0001] The invention relates to a coal roadway support technology, in particular to a bolt support method for a coal roadway with strong sides and corners. Background technique [0002] Such as figure 1 As shown, the roadway through which most or all of the rock formations are coal is called coal roadway, and the roadways around the mining area are generally coal roadways. Under normal circumstances, coal roadway rock formations are complex and changeable, often affected by mining, and the service period is short, and the safety factor cannot be too high. Therefore, coal roadway support has the characteristics of high difficulty, poor stability, and low safety. The cost of coal roadway support generally accounts for more than 50% of the total cost of roadway excavation, and the speed of coal roadway support is the most important factor affecting the speed of coal roadway excavation. [0003] Such as figure 2 As shown, the existing coal roadway support inc...

Claims

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Application Information

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IPC IPC(8): E21D20/00
Inventor 单仁亮孔祥松田亮
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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