Arrow anchor rod of multi-section clamping grouting anchoring and using method thereof

Abstract

The invention relates to the field of slope reinforcement and surrounding rock support control of underground engineering, disclosing an arrow anchor rod of multi-section clamping grouting anchoring,which comprises a sleeve (5), a grouting rod body device and a sealing device, wherein the grouting rod body device is arranged in the sleeve (5); the grouting rod body device comprises a grouting rodbody (7) and a plurality of groups of anchor heads (6); each group of anchor heads (6) forms a clamping anchoring structure and are connected to the outer wall of the grouting rod body (7) in hinge mode; the sleeve (5) is provided with a slotted hole (5002) which is in one-to-one correspondence with the anchor head (6) and suitable for the anchor head (6) to pass; the anchor head (6) is guided into the rock mass along the slotted hole (5002) by the external force of propelling grouting rod body device; a sealing structure is formed between the sleeve (5) and the grouting rod body device by utilizing a sealing device and is fixed on the rock wall (9). By adopting the technical innovation of the arrow anchor rod of multi-section clamping grouting anchoring, continuous high-resistance and high-strength working resistance can be provided timely and efficiently, so that the long-term stability of the engineering geotechnical mass maintenance under the environment of high stress or strong power disturbance can be truly achieved.

Description

technical field

[0001] The invention relates to the fields of side slope reinforcement and surrounding rock support control in underground engineering, in particular to a multi-section clamping grouting anchoring arrow bolt. Background technique

[0002] At present, in the process of urban rail transit construction, excavation of mountain or hydropower tunnels, deep resource mining, and even major slope treatment projects, unfavorable rock and soil layers with complex occurrence conditions are often encountered, with well-developed joints, strong structural composites, and structural stresses. The level is high, and the anchoring quality of traditional bolts will be severely tested when the mine construction method is used for maintenance and control. If it is subjected to strong dynamic disturbances such as blasting excavation, mining disturbances, and seismic waves in the later stage, it is difficult to control the overall anchoring system at this time. Failure due to poor...

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