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High-prestress large-ductility constant-resistance deformation yielding scour prevention anchor cable for mine reinforcing and working process thereof

A high prestress and elongation technology, which is applied in mining equipment, bolt installation, earthwork drilling and mining, etc., can solve problems such as insufficient elongation, easy to be broken, loss of roadway support, etc.

Inactive Publication Date: 2015-06-24
SHANDONG GUOHUA MINING IND ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the elongation rate of the currently used anchor cables is insufficient under high stress conditions. After the initial loading force of the anchor cables is increased, the margin of anchor cable strength is reduced, and the adaptability to the crushing load of the roadway surrounding rock is reduced. It is easy to be pulled off, and then the whole loses the support for the roadway

Method used

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  • High-prestress large-ductility constant-resistance deformation yielding scour prevention anchor cable for mine reinforcing and working process thereof

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Embodiment Construction

[0021] Related technical contents not mentioned below can adopt or learn from the prior art.

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0023] figure 1 As shown, a mine reinforcement with high prestress, large elongation, constant resistance deformation yield pressure anti-shock anchor cable, including anchor cable main body 1, anchor cable main body 1 is twisted by multi-stran...

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Abstract

The invention discloses a high-prestress large-ductility constant-resistance deformation yielding anchor cable for mine reinforcing. The high-prestress large-ductility constant-resistance deformation yielding anchor cable is characterized in that the cable is twisted by steel wires, a plurality of hollow yielding cage bodies are arranged on a cable body at intervals, and cavities of the yielding cage bodies are filled with press-in macromolecule filler. In the working process, the anchor cable is placed in an anchor cable hole, the head of the anchor cable is fixed at the bottom of the anchor cable hole through an anchoring agent, and an anchor cable tray and a lock are used for fixing the tail portion of the anchor cable on the roadway surface outside an anchor cable hole opening. When surrounding rock of a roadway is subjected to breaking and expanding deformation, the cage bodies can be yielded by the anchor cable through shrinkage, and the length of the anchor cable is increased for yielding. Compared with the prior art, the high-prestress large-ductility constant-resistance deformation yielding anchor cable is simple and easy to implement, easy to construct and capable of effectively releasing rock stratum pressure.

Description

technical field [0001] The invention relates to an anchor cable, in particular to a steel wire-twisted anti-shock anchor cable with high prestress, large elongation rate, constant resistance, deformation, and anti-shock for mine reinforcement with a hollow cage. Background technique [0002] Anchor cables are commonly used in current coal mines to support the roadway surrounding rock. The principle used is mainly to use anchor cables to suspend the layered rock blocks that have been separated from the roof of the parent body to prevent the rock formations on the surface of the roadway from collapsing. However, sometimes there are weak and broken rock formations within the suspension range of the anchor cable. When these rock formations are affected by disturbance loads or lose their strength under long-term loading, they will bulge and deform, which will increase the load on the normal working anchor cable. If this phenomenon continues...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/02
CPCE21D21/00E21D20/00
Inventor 代进张海峰
Owner SHANDONG GUOHUA MINING IND ENG CO LTD
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