A shrinkable U-shaped steel support for mines coupled with anchor rods

A shrinkable and shaped steel technology, which is applied in the installation of bolts, mining equipment, shaft lining, etc., can solve the problems of not being able to give full play to the joint support effect of anchor cables and U-shaped steel, time difference, etc., and achieve the retention of shrinkable sexual effect

Inactive Publication Date: 2018-03-16
HENAN POLYTECHNIC UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that there is a certain time difference between the anchor cable and the U-shaped steel support in the roadway support, and the supporting effect of the combined support of the anchor cable and the U-shaped steel cannot be fully exerted

Method used

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  • A shrinkable U-shaped steel support for mines coupled with anchor rods
  • A shrinkable U-shaped steel support for mines coupled with anchor rods
  • A shrinkable U-shaped steel support for mines coupled with anchor rods

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] see Figure 1-4 , the present invention provides a technical solution: a shrinkable mining U-shaped steel bracket coupled with an anchor rod, which includes an anchor rod 1, a special-shaped U-shaped steel 2, an ordinary U-shaped steel 3, a clamping cable 4 and an anchor rod hole 5, It is characterized in that the roof of the roadway is supported by the ordinary U-shaped steel 3, and the two sides of the roadway are supported by the special-shaped U-sha...

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Abstract

The invention discloses a contractible mining U-shaped steel support couplable to anchor bolts. A common U-shaped steel support is used on a roadway roof, special-shaped U-shaped steel supports are used on two sides of a roadway, special-shaped U-shaped steel on the coal side of the roadway is formed by widening two sides of U-shaped steel, the widened sides are provided with anchor bolt holes, the anchor bolts are driven into surrounding rock of the roadway coal side through the anchor bolt holes in two sides of the special-shaped U-shaped steel, and the two pieces of common U-shaped steel are stacked together and are fixed with the special-shaped U-shaped steel to the supported roadway roof through locking cables. The special-shaped U-shaped steel is used on the two sides, the two sides of the U-shaped steel are widened and are provided with the anchor bolt holes, the anchor bolts are driven to the roadway surrounding rock through the anchor bolt holes, and the coupling of the anchor bolt cables to the U-shaped steel support is implemented. The cable locking and fixing parts of the special-shaped U-shaped steel are provided with the width of normal steel edges, and the contractibility of the U-shapes steel is retained. The mining U-shaped steel support enables the coupling of the anchor bolts to the U-shaped steel support and also retains the contractibility of the U-shaped steel.

Description

technical field [0001] The invention belongs to the field of roadway support, and in particular relates to a shrinkable mining U-shaped steel support coupled with a bolt. Background technique [0002] U-shaped steel brackets have been widely used in coal mine roadways, and the use of U-shaped steel brackets can better solve the problem of tunneling support in soft rock roadways. Compared with other rigid supports in soft rock roadway, U-shaped steel support has stable and reliable bearing capacity, adapts to the load and deformation of soft surrounding rock, has strong shrinkability, strong resistance to lateral pressure, high cross-section utilization rate, convenient support and easy maintenance. Small quantity. In soft rock roadways, bolt cables and U-shaped steel brackets are generally used for joint support. Bolts and anchor cables are active supports; U-shaped steel brackets are passive supports and only play a role when the surrounding rock is deformed. It can be se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/22E21D20/00
CPCE21D11/22E21D20/00
Inventor 李超郭文兵王遵义董大坤白二虎于秋鸽刘大超杨达明李新岭
Owner HENAN POLYTECHNIC UNIV
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