Pressurization balancing device for shield machine initialization

Abstract

A pressuring balancing device for starting shield machine used in the technical field of tunnel driving comprises steel, end cover, reaction frame, supporting device, sealing mechanism and shield machine; the pressuring balancing device for starting shield machine is fixed at the starting end; its divided structure is able to place the shield machine in; the steel structure is fixed with the supporting device to lead the shield machine to drive along the appointed track; when the shield machine enters into the soil by the reaction frame, the excavation face is balanced by exerting pressure on front part of the cutter head; the sealing mechanism firmly seals the earth pressure and water pressure at the front part of the shield machine; the shield machine continuously moves forward; when the segments are assembled in the pressuring balancing device, the synchronized grouting is started; the slurry is enveloped by the end cover so the shield machine is able to use its soil pressure and the slurry balancing function to start the normally drive. The device does not need to strengthen the soil around the starting end and drives through establishing soil pressure balancing or slurry balancing by the device, which reduces the construction cost and the failure rate and does not limit the geological conditions and protect the environment.

Description

Technical field: [0001] The invention relates to a pressure balancing device used for starting a shield machine in the technical field of tunneling. Background technique: [0002] At present, the mud-water balance or earth pressure balance has not been established when the shield machine is launched, and the surrounding soil usually needs to be reinforced. After the shield machine enters the tunnel, synchronous grouting starts, and the earth pressure balance or mud-water balance is gradually established. The mechanism began the formal excavation process. The method of soil reinforcement is not only expensive, but also has poor reliability, which often causes serious damage to equipment and the environment. Therefore, developing a pressurized balance device for shield machine initiation has always been a new subject to be solved urgently. Invention content: [0003] The purpose of the present invention is to provide a novel mechanism with ingenious and scientific concept ...

AI Technical Summary

Problems solved by technology

The method of soil reinforcement is not only expensive, but also has poor reliability, often causing serious damage to equipment and the environment

Images