Shield tail double-liquid synchronous grouting mixer

Abstract

The shield tail double-liquid synchronous grouting mixer comprises a liquid A conveying pipe, a liquid B conveying pipe, a slurry mixing pipe, a slurry discharging pipe, a conversion piston, a hydraulic oil cylinder, a stroke sensing device, a flushing water pipe, a material storage box, an upper cover plate, a lower cover plate and a water system. Independent grouting of the liquid A and the liquid B is achieved, and grouting can be conducted by selecting a proper grout proportion according to different geological environments; automatic mixing and discharging of the liquid A and the liquid B in the pipe are achieved, and the situation that the conveying pipe is blocked due to slurry solidification is effectively avoided; a special sealing ring of the piston is switched, so that the pressure bearing capacity is higher, and the problem of pipeline blockage caused by grout backflow during grouting can be effectively prevented; a special sealing ring of the piston is switched, bidirectional sealing is achieved, and the problem that clear water flows into the gap between the excavation face and the pipe piece during flushing, and consequently the slurry proportion is changed can be effectively solved.

Description

technical field [0001] The invention relates to tunnel construction equipment, in particular to shield tail double-liquid grouting in the field of shield tunneling construction. Background technique [0002] For a large number of tunnel constructions at home and abroad, shield machines are the preferred equipment for excavation, and construction safety and control of surface settlement are particularly important in construction. During the propulsion process of the shield machine, after the tail of the shield is separated from the segment, an over-excavated gap will appear on the back of the segment. If the gap is not backfilled in time, the formation will inevitably be deformed, especially in some pebble formations, where the self-stability of the pebble is poor. It is very easy to fall off; usually, the process of filling the gap of the back of the segment after the tail of the shield is separated in time is called synchronous grouting. It is an indispensable construction ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a shield tail double liquid synchronous grouting mixer, which can realize the automatic mixing of double liquid slurry, avoid the situation that the initial setting of the slurry blocks the pipeline, and can realize automatic switching and timely flushing of the pipeline , and can realize the problem of online cleaning of blocked pipelines

Images