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Anchor cable bundle supporting device and roadway supporting method

A technology of support device and roadway support, which can be used in earth-moving drilling, installation of bolts, mining equipment, etc., can solve the problems of high roof pressure, difficult support, large deformation of roadway, etc., so as to increase the anchorage length, improve the Support effect, ensure the effect of anchoring effect

Pending Publication Date: 2018-11-16
HUAINAN MINING IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention lies in the high pressure on the roof of the gob-side roadway and the long-span roadway in coal roadway excavation, large deformation of the roadway, and difficult support

Method used

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  • Anchor cable bundle supporting device and roadway supporting method
  • Anchor cable bundle supporting device and roadway supporting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] combined with figure 1 , a support device for anchor cables in the present invention, comprising a tray 1, five anchor cables and five locks 3 respectively corresponding to the five anchor cables, the five anchor cables are respectively two first anchor cables 21, two A second anchor cable 22 and a third anchor cable 23, the lengths of the first anchor cable 21, the second anchor cable 22 and the third anchor cable 23 are respectively a, b and c, c>a>b, the pallet The four corners and the middle part of 1 are respectively provided with anchor cable holes, the bottom of the third anchor cable 23 is fixed on the pallet 1 by the lock 3, and the bottoms of the two first anchor cables 21 are fixed on the pallet by the lock 3 1, the bottoms of the two second anchor cables 22 are fixed on the other side of the pallet 1 by the lock 3.

[0032] Further, five anchor cable pads 4 are included, and the anchor cable pads 4 are located between the lock 3 and the bottom surface of th...

Embodiment 2

[0034] Further, an anchor cable hole is opened on the surface of the tray 1, and also includes an anti-fall anchor cable 5, the bottom of the anti-fall anchor cable 5 is provided with a stopper 6, and the top of the anti-fall anchor cable 5 is lifted from the tray 1 Stretch out upwards in the anchor cable hole, anti-drop anchor rod 5 does not carry out the pretightening and only plays the effect of hanging large pallet 1 when large pallet 1 falls so that it does not fall and smash people.

[0035] Further, the diameter of the first anchor cable 21, the second anchor cable 22 and the third anchor cable 23 is 22mm, and the lengths are 8600mm, 7400mm and 9800mm respectively;

[0036] The length, width and height of tray 1 are 800mm, 900mm and 16mm respectively;

[0037] The length, width and height of the anchor cable cushion block 4 are 150mm, 150mm and 16mm respectively;

[0038] Anchor cable hole diameter is 25mm;

[0039] The distances from the centers of the anchor holes a...

Embodiment 3

[0041] Taking an above-ground tunnel fan chamber as an example, considering the safety of support, it is required to check the maximum support strength of the roadway in the chamber section during theoretical calculation. Then when the full width is checked, the possible fall height of the roof and the rock weight (per meter of roadway) are:

[0042] W=B×h×γ=7.5 / 8.5×4.3×25=806.25KN / 913.75KN;

[0043] In the formula, B is the width of the roadway, B=7.5 / 8.5m; h is the maximum possible caving height of the roof, combined with the actual roof of the 6-coal coal seam, the lithology of the roof of the electromechanical chamber section: 0-3.8m sandy mudstone; 3.8- 4.3m carbonaceous mudstone; 4.3-7.0m sandy mudstone; 7.0-7.1m coal; 7.1-9.6m sandy mudstone; the maximum possible caving height is 4.3m; γ is the rock bulk density, γ=25KN / m3.

[0044] In order to ensure the complete reliability of the support, the auxiliary support force of the roof bolt is not considered in the theoreti...

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Abstract

The invention provides an anchor cable bundle supporting device and a roadway supporting method, and relates to the field of roadway supporting devices. The anchor cable bundle supporting device comprise a tray, five anchor cables and five locks separately corresponding to the five anchor cables. The five anchor cables are separately two first anchor cables, two second anchor cables and a third anchor cable, the length of each first anchor cable, the length of each second anchor cable and the length of the third anchor cable are separately a, b and c, and c>a>b. Anchor cable holes are separately formed in the four corners and the middle portion of the tray. The bottom of the third anchor cable is fixed to the tray through the locks, the bottoms of the two first anchor cables are fixed to the same side of the tray through the locks, and the bottoms of the two second anchor cables are fixed to the other side of the tray through the locks. The anchor cable bundle supporting device and theroadway supporting method can be used in a roadway, and the anchoring effect is greatly improved.

Description

technical field [0001] The invention relates to the field of roadway support devices, in particular to an anchor cable bundle support device and a roadway support method. Background technique [0002] At present, most of the mines have been mined in deep areas. The traditional coal roadway support under high-stress and complex geological conditions cannot meet the needs of on-site construction. Problems such as high pressure on the roof, large deformation of the roadway, and difficult support are particularly prominent in coal roadway excavation along the goaf and long-span roadways. Contents of the invention [0003] The technical problem to be solved by the present invention lies in the high pressure on the roof of the gob-side roadway and the long-span roadway in coal roadway excavation, large deformation of the roadway and difficult support. [0004] The present invention solves the above-mentioned technical problems through the following technical solutions. [000...

Claims

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Application Information

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IPC IPC(8): E21D21/00E21D20/00
CPCE21D20/00E21D21/0026
Inventor 马洋洋朱胜利金瑞举马向东高磊
Owner HUAINAN MINING IND GRP
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