Shield contact channel excavating device

Abstract

The present invention provides a shield contact channel excavating device, relates to the field of shield construction, and especially relates to a shield contact channel excavating device. The wholesteel pipe ring is driven by a driving device to perform rotational motion, the soil is cut by the steel pipe ring with cutters, and a propulsion oil cylinder is disposed to provide propulsive force to enable the whole pipe ring to excavate forward. A sealing device is equipped with a slurry pipe, the slurry pipe is connected with a slurry pump, and slurry or other soil conditioner is pumped intothe steel pipe ring by the slurry pump to wash muck in the steel pipe ring. Due to the fact that a pressure compartment is formed between the sealing device and an excavating surface, when the pressure in the steel pipe ring is oversized, the slurry in the steel pipe ring enters the gap between the steel pipe ring and a tunnel wall formed by excavation, then a ball valve on an original sending cylinder is opened, and the slurry enters a slurry treatment pool via a pipeline installed on the ball valve. The construction period of excavating a contact channel by the device is largely shortened, and the potential safety hazard of manual excavation in the prior art is avoided.

Description

technical field [0001] The invention relates to the field of shield tunneling, in particular to tunneling equipment for shield tunnels. Background technique [0002] In the construction of shield tunneling, the shield connecting channel is generally set in the middle of two tunnels, and becomes a channel between the two tunnels, which plays the roles of communication, drainage and fire prevention. If there is a problem in one tunnel as a whole, pedestrians can transfer to another tunnel through the connecting passage, and the safety factor of pedestrians will also be greatly increased, so it is called "escape passage". It is also convenient that when a problem occurs in one tunnel, rescuers can reach the communication channel from another tunnel, and then enter the place that needs rescue through the communication channel, so as to achieve the purpose of quick rescue. [0003] At present, the commonly used construction method for the communication channel of the tunnel is t...

AI Technical Summary

Problems solved by technology

[0004] In view of the problems mentioned in the prior art that the work efficiency is low due to the use of frozen soil method construction, and the excavation is carried out manually, which makes the construction progress slow, and there are still certain hidden safety hazards for the staff.

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