High-pressure grouting lifting deformation monitor and installation method thereof

Abstract

The invention discloses a high-pressure grouting lifting deformation monitor and an installation method thereof. The monitor comprises a reference pipe and a protective pipe; the bottom end of the reference pipe is connected with a sliding inner shaft, an inner anchor head is mounted on an inner anchor pipe, the bottom end of the protection pipe is connected to a sliding outer sleeve, the sliding outer sleeve sleeves the sliding inner shaft, and a sealing component is arranged between the sliding outer sleeve and the sliding inner shaft; an elastic rubber plug is embedded between the sliding inner shaft in the lower portion of the reference pipe and the sliding outer sleeve in the lower portion of the protective pipe in a sleeved manner; a ground lifting observation dial gauge is mounted at the top end of the reference pipe; and the reference pipe, the sliding inner shaft, the inner anchor pipe and the inner anchor head include hollow channels respectively, and the hollow channels are connected in series to form a grouting channel. The monitor and method can effectively prevent the protective pipe from consolidating with the reference pipe due to grouting leak in the high-pressure grouting process, sealing between the protection pipe and the reference pipe and free sliding performance during deformation are ensured, and the observation precision of the lifting deformation observing device is ensured.

Description

technical field [0001] The invention relates to a high-pressure grouting lifting deformation monitoring device and an installation method thereof, belonging to the field of foundation treatment consolidation and anti-seepage grouting engineering, and is mainly used for real-time grouting lifting deformation during foundation treatment consolidation and anti-seepage grouting Monitoring to avoid large grouting deformation due to excessive grouting strength, resulting in damage to the superstructure. Background technique [0002] When performing foundation reinforcement and anti-seepage grouting, the grout poured into the pores or cracks of the formation may cause grouting deformation and damage as the amount of grouting and grouting pressure increase. Clay, kelp, butter, gypsum or a single rubber pad is often used for sealing and isolation between the protection pipe and the reference pipe of the existing grouting lifting deformation observation device, which is prone to high-...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the existing grouting and lifting deformation observation device is prone to high-pressure grouting and solidification between the protection pipe and the reference pipe, which affects the observation accuracy of the lifting and deformation observation device, a high-pressure grouting and lifting deformation monitoring device and its installation method are proposed. The monitoring device has a multiple sealing structure with elastic rubber plugs between the protection tube and the reference tube, and sealing elements between the sliding outer sleeve and the sliding inner shaft, which can effectively prevent the occurrence of crosstalk between the protection tube and the reference tube during the high-pressure grouting process. To solve the problem of slurry consolidation, to ensure the sealing between the protection tube and the reference tube of the lifting deformation observation device and the free sliding performance of deformation displacement, so as to ensure the observation accuracy of the lifting deformation observation device

Images