A method for grouting with combined anchors
CN116906093BActive Publication Date: 2026-06-05CHINA RAILWAY NO 9 GRP NO 7 ENG CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 9 GRP NO 7 ENG CO LTD
- Filing Date
- 2023-06-16
- Publication Date
- 2026-06-05
AI Technical Summary
Technical Problem
Traditional hollow radial anchors are prone to falling off or shifting during tunnel construction, affecting the grouting reinforcement effect and resulting in low construction efficiency.
Method used
The combined anchor bolt method utilizes the detachable characteristics of the self-expanding mechanism and the anchor pipe. The opening and retraction of the self-expanding component are controlled by the limiting rod to ensure the stability of the anchor bolt installation and prevent it from falling off. Grouting is performed by injecting mortar through a grouting machine.
Benefits of technology
It improves the stability of anchor installation, prevents falling off, ensures construction efficiency, and enhances the grouting reinforcement effect.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116906093B_ABST
Abstract
The application provides a method for grouting by using combined anchor rods, comprising the following steps: step S1, drilling according to the longitudinal design parameters of the anchor hole ring; step S2, inserting an anchor pipe into the assembled anchor rod head and outer pipe; step S3, rotating the limiting rod, driving the non-hinged end of the first self-expanding part and the second self-expanding part to move away from each other by the screw sleeve, so that the self-expanding mechanism is opened; step S4, controlling the bolt reset by the limiting rod, so that the self-expanding mechanism is retracted; rotating the connecting disc as a whole by the anchor pipe, so that the connecting disc is separated from the outer pipe, and the anchor pipe and the self-expanding mechanism are withdrawn from the anchor hole as a whole; step S5, installing the grouting pad, so that the mortar seeps into the rock-soil layer after passing through the grouting outlet; step S6, plugging the grouting port after the mortar fills the anchor hole; and fully utilizing the characteristics that the self-expanding assembly and the anchor pipe can be removed, so that the self-expanding assembly can be disassembled before grouting, thereby ensuring the stability of the anchor rod installation and preventing the anchor rod from falling before grouting.
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