A U-shaped beam installation device and method in a shield-type TBM

Abstract

The invention discloses an installation device and method of a U-shaped beam in a shield type TBM. The installation device comprises a U-shaped beam installer which is arranged in a tunnel and is shaped like a cylinder, multiple arc-shaped steel plates are fixed on the outer edge of the U-shaped beam installer, the arc-shaped steel plates form a cylinder of which the curvature radius is equal to the outer diameter of the U-shaped beam installer, multiple U-shaped beams are arranged on the outer side of each arc-shaped steel plate, and the adjacent U-shaped beams are connected through connectors. According to the installation device and method of the U-shaped beam in the shield type TBM, the problems that due to the fact that the TBM installer is not matched with an excavation tunnel wall, the U-shaped beams can not be tightly attached to the tunnel wall, and connection of the connectors is not firm can be solved, the stress state of the U-shaped beams can be obviously improved, and the supporting performance of the U-shaped beams is fully exerted; meanwhile, the installation efficiency of the U-shaped beams can be effectively improved, and the excavation efficiency of the TBM is further improved.

Description

technical field [0001] The invention relates to a TBM tunnel support technology, in particular to a U-shaped beam installation device and method in a shield-type TBM. Background technique [0002] The TBM tunnel construction method has been widely used in the construction of hydropower diversion tunnels and highway-railway tunnels due to its advantages of fast construction speed and low dust in the construction environment. During the TBM construction process, as the cutter head continues to drive forward, the excavation surface is continuously exposed from behind the TBM shield. At this time, a support operation needs to be carried out in the exposed area of ​​the surrounding rock. The primary support efficiency is not only related to the stability of the surrounding rock and the safety of personnel, but also directly affects the tunneling speed of the TBM. Now the U-beam installer of the shield-type TBM is located inside the shield, and the assembly of the U-beam is perfo...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a U-shaped beam installation device and method in a shield-type TBM to solve the problem that the arc of the U-beam installer in the shield-type TBM does not match the excavation wall. The present invention can solve the problem of TBM installation The mismatch between the U-shaped beam and the excavated wall causes the problem that the U-shaped beam cannot be tightly attached to the wall and the joint connection is not firm. It can significantly improve the stress state of the U-shaped beam and give full play to its supporting performance; at the same time, it can effectively improve the U-shaped beam. installation efficiency, thereby improving the tunneling efficiency of TBM

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