Back-wall double-slurry grouting simulation device and manufacturing and mounting method thereof

Abstract

The invention belongs to the technical field of shield tunnel detection, and particularly relates to a back-wall double-slurry grouting simulation device and a manufacturing and installing method thereof.The back-wall double-slurry grouting simulation device comprises an inner-layer pipe multi-item connector, an outer-layer pipe, an inner-layer pipe and an outer-layer pipe, and the inner-layer pipe and the outer-layer pipe are installed on the inner-layer pipe multi-item connector and the outer-layer pipe multi-item connector; an inner-layer pipe joint is arranged in the right-side interface, one end of the inner-layer pipe is arranged in the inner-layer pipe joint, an outer-layer pipe joint is arranged in the left-side interface, one end of the outer-layer pipe is connected with the outer-layer pipe joint, the outer-layer pipe is arranged outside the inner-layer pipe, and a lower joint is arranged in the interface on the lower side of the multi-joint of the inner-layer pipe and the outer-layer pipe. The shield tunnel double-slurry synchronous grouting simulation device is used for simulating shield tunnel double-slurry synchronous grouting, cement slurry is introduced into the outer-layer pipe, a water glass solution is introduced into the inner-layer pipe, and the two kinds of slurry are introduced synchronously, so that the state and effect of shield tunnel double-slurry synchronous grouting can be simulated truly.

Description

technical field [0001] The invention belongs to the technical field of shield tunnel detection, and in particular relates to a double-fluid grouting simulation device behind a wall and methods for making and installing the same. Background technique [0002] In order to alleviate the pressure of ground traffic, many cities choose elevated roads or subways as traffic diversion methods. Among them, the construction of urban subway construction projects generally adopts the shield method. During the tunneling construction of the shield machine, since the outer diameter of the shield shell is larger than the outer diameter of the lining segment, when the segment comes out of the shield tail, the gap between the outer wall of the segment and the soil needs to be injected with grout to maintain the segment structure and stability of the surrounding soil. The traditional synchronous grouting slurry adopts a single-liquid award. Before the initial setting of the single-liquid slur...

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Problems solved by technology

[0003] In summary, double-fluid grouting can solve the problem of segment floating to ensure the construction quality of the shield tunnel, but the initial setting time of the double-fluid grout is short. If the A , If B liquid is fully mixed first and then injected into the grouting pipe, the grout is likely to solidify during the pipeline transportation process, and the grout will block the grouting pipe.

However, if two pipes are used in parallel as in the actual double-liquid slurry construction process, so that the A and B liquids enter the shield tail gap and the formation and then mix themselves, the double-liquid slurry cannot be mixed evenly, and the effect of the double-liquid slurry cannot be reflected in time.

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