Geotechnical engineering sectional type hollow grouting anchor cable device

Abstract

The invention discloses a geotechnical engineering sectional type hollow grouting anchor cable device. The device comprises a hollow grouting anchor cable or a hollow grouting pipe, and further comprises sectional isolators; the hollow grouting anchor cable comprises a grouting inner pipe and a steel strand; a plurality of grout outlet holes and constant-pressure sealing sleeves used for sealing the grout outlet holes are arranged on the grouting inner pipe or the hollow grouting pipe; the sectional isolators are arranged on the hollow grouting anchor cable or the hollow grouting pipe; and thesectional isolators are arranged among the grout outlets formed in the hollow grouting anchor cable or the hollow grouting pipe. According to the geotechnical engineering sectional type hollow grouting anchor cable device, due to the arrangement of the sectional isolators and the constant-pressure sealing sleeves, corresponding sectional and graded grouting can be conducted according to differentreinforcing or sealing requirements of stratum surrounding rock of different parts, the grouting amount of deep surrounding rock can be increased according to needs, the grouting reinforcing or sealing effect can be remarkably improved, a large amount of re-injection or re-repair cost is saved, and particularly potential safety risks caused by surrounding rock collapse and re-repair can be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of anchor cables, in particular to a hollow grouting anchor cable. Background technique [0002] Geotechnical engineering such as subways, tunnels, slopes, wells, culverts, dams, etc., in the case of geological fracture zones, some soft rocks, easy-to-fall pieces, landslide instability, large deformation, water discharge or water inrush danger, In the case of piping, etc., grouting reinforcement is one of the commonly used methods. This method is to inject grout into the rock mass through grouting anchor cables, grouting anchor rods, etc., and use the bonding and coagulation mechanism of the injected grout to achieve reinforcement of the surrounding rock. , Significantly improve the effects of support and water blocking. [0003] At present, there are problems with the use of grouting anchor cables: when using anchor cable grouting, less grout is injected in the deep part of the hole or in the geologically ...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a geotechnical engineering segmented hollow grouting anchor cable device, to solve the problem of existing grouting anchor cable, injection There are technical problems such as grouting bolts, grouting devices, etc., which cannot be grouted in sections according to needs and are troublesome to use and operate.

Images