An anchor cable anchoring efficiency enhancement method and its structure

Abstract

The invention relates to an anchor cable anchoring enhancing method and structure. When an anchor cable is installed, an anchoring agent with different condensation speeds is adopted, the condensation speeds of the anchoring agent are sequentially increased from the outer side of a hole to the inner side of the hole, and therefore it is ensured that no condensation can happen to the anchoring agent outside the hole in the anchoring agent stirring and mixing process at different depths, and the anchoring agent is fully stirred and blocked through the anchor cable anchoring enhancing structure. The anchor cable anchoring enhancing structure is composed of a stirring device and a blocking device, wherein a left-hand thread protrusion is arranged outside the stirring device, 2 to 5 stirring teeth are arranged on the top of the stirring device, and a groove matched with one end of the anchoring agent is formed among the stirring teeth so that the anchoring agent can be prevented from deflecting from the center of the drilled hole in the stirring process. The section of the hole in the stirring device of the anchor cable anchoring enhancing structure is conical, and therefore one end of the anchor cable can be conveniently sleeved with the stirring device. The anchor cable anchoring enhancing method and structure have great significance in improving anchor cable anchoring quality and bringing anchor cable breaking force into full play under the special conditions of fault fracture zones, water-bearing roofs and the like, and have good popularization prospects.

Description

technical field [0001] The invention belongs to the technical field of roadway (tunnel) support, and in particular relates to an anchorage synergistic method and a structure thereof which are convenient for the anchoring force of anchor cables to be fully exerted and easy to implement. Background technique [0002] With the complex mining conditions of mines, the breaking force of anchor cables is gradually increasing. At present, many mines have used anchor cables with diameters of 17.8mm, 21.6mm, and 28mm. (Tunnel) safety and maintenance of roadway (tunnel) surrounding rock stability play a vital role, but under some special geological conditions, such as fault fracture zone, water-bearing roof and other conditions, the anchoring quality of this kind of anchor cable It is difficult to guarantee, and its advantage of high support strength is difficult to play. To solve this kind of problem, the method of arranging more anchoring agents is mainly adopted at present. This me...

AI Technical Summary

Problems solved by technology

[0002] With the complex mining conditions of mines, the breaking force of anchor cables is gradually increasing. At present, many mines have used anchor cables with diameters of 17.8mm, 21.6mm, and 28mm. (Tunnel) safety and maintenance of roadway (tunnel) surrounding rock stability play a vital role, but under some special geological conditions, such as fault fracture zone, water-bearing roof and other conditions, the anchoring quality of this kind of anchor cable It is difficult to guarantee, and its high support strength advantage is difficult to play

To solve this kind of problem, the method of arranging more anchoring agents is mainly adopted at present. This method can easily cause the lower anchoring agent to have a solidification reaction when the upper anchoring agent is stirred, so that the effectiveness of the anchoring agent is difficult to fully utilize; at the same time, due to the The surface is relatively smooth, and it is difficult to fully and evenly stir the anchoring agent. At present, the method of winding iron wire at the end, assuming a stirring ring, etc., can play a certain role in stirring the anchoring agent, but it will inevitably damage the wall of the drilled hole and cause the hole wall to be damaged. The slag is mixed into the anchoring agent, affecting the anchoring effect

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