A grouting anchor structure and its construction method

Abstract

The invention provides a grouting anchor rod and its construction method. The grouting anchor rod structure includes a rod body, a tray, a locking nut, a self-locking ring, a positioning plug and a consolidation body. An anchor hole is dug on the rock mass, and the self-locking ring Installed on the anchor rod body, one end of the rod body extends into the anchor hole, the other end of the rod body passes through the positioning plug, the tray is screwed with the lock nut, and the tray is covered at the port of the anchor hole, and the consolidation body is filled in the rod body In the gap between the anchor hole and the inner wall of the anchor hole; the construction method includes preparing the grouting pipe, digging the anchor hole, installing the rod body, preparing the grouting material, connecting the grouting pipe, and injecting grout into the gap between the anchor hole and the rod body through the grouting pipe . Adopting the technical solution of the present invention, through the self-locking ring provided on the rod body, the injected grouting material is more evenly distributed in the anchor hole and then condensed, and the overflow of the grout from the anchor hole is effectively prevented, so that The rod body is more tightly connected to the surrounding rock, which improves the strength and effect of bolt support and reduces potential safety hazards.

Description

technical field [0001] The invention belongs to the technical field of rock and soil support of mining engineering and civil engineering, in particular to a grouting bolt structure and a construction method thereof. Background technique [0002] At present, the use of technical equipment such as bolts and cables has been widely used in mining engineering support operations. Among them, in the process of bolt support operations, in order to increase the strength of bolt support and reduce the cost of bolt construction, often Use the grouting anchor structure and its construction method to replace the support process of the solid anchor. This grouting anchor structure and its construction method are generally composed of a rod body, a tray and a lock nut. When the anchor rod is inserted into the anchor hole , and then inject appropriate slurry into the gap between the anchor rod and the anchor hole. When the slurry solidifies, the anchor rod and the surrounding rock wall will ...

AI Technical Summary

Problems solved by technology

However, in the construction process of the existing grouting anchor structure and its construction method, when the slurry is injected, the slurry often falls under its own gravity before solidification, and avoids flowing out along the anchor hole, so that the slurry The gap between the rod body and the anchor hole cannot be filled densely, which affects the bolt support effect and brings safety hazards to the roadway support

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