TBM gripper shoe concrete precast block device and gripper shoe tight-holding method

Abstract

The invention relates to a TBM gripper shoe concrete precast block device and a gripper shoe tight-holding method using the device. A precast block is formed by rebar and concrete, the shape of the precast block is matched with the shape of a gripper shoe, the precast block further comprises a fixing rebar part, one end of the fixing rebar part is embedded into the TBM gripper shoe concrete precast block device, when a TBM comes across the conditions that the rock is instable or collapse occurs in excavation construction, the other end of the TBM gripper shoe concrete precast block device is fixed on the gripper shoe by the aid of the fixing rebar part, a gripper cylinder can fix the gripper shoe on the tunnel wall by the TBM gripper shoe concrete precast block device, the excavation construction can be recovered rapidly, efficiently, safely and stably, the construction production efficiency of a construction enterprise is improved, and the construction cost is saved.

Description

Technical field [0001] The invention relates to the field of underground and tunnel construction equipment, in particular to a TBM shoe-supporting concrete prefabricated block device of a full-section tunnel boring machine and a method for holding up the shoe. Background technique [0002] At present, the way to deal with the rock collapse of the cave wall where the support shoe is tightly supported during the TBM construction is to use wooden blocks and sandbags at the cave-in. During the tunneling construction, the rock at the support shoe support is unstable and the support shoe cannot be tightly supported when it collapses locally. This causes the equipment to slide backwards during tunneling, which affects the construction effect and construction schedule. [0003] In order to improve the above shortcomings, the present invention provides a new type of shoe-supporting concrete prefabricated block device, which solves the problem of rock instability at the shoe-supporting locat...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem that the full-section tunnel boring machine shoe cannot be tightened in the prior art, the present invention provides a concrete prefabricated block device for the TBM shoe, which is characterized in that it is made of steel bars and concrete, and the concrete is made of The raw materials are high-quality Portland cement with a strength grade of 52.5, quartz sand, fly ash, polycarboxylate superplasticizer, steel fiber, and water. The mass ratio is: 1:1:0.5:0.09:0.18: 0.18; The raw material used for the steel bar is the finished rolled threaded steel bar for prestressed concrete, of which: the carbon

Images