Air cushion type slurry balance shield tunneling machine for solving stagnant discharge problem and construction method of air cushion type slurry balance shield tunneling machine

Abstract

The invention discloses an air cushion type slurry balance shield tunneling machine for solving the stagnant discharge problem. The air cushion type slurry balance shield tunneling machine comprises a cutter head, a slurry bin and an air cushion bin, wherein the slurry bin is connected with the air cushion bin through a communicating pipe, slurry enters the slurry bin through a slurry bin slurry inlet pipe, the slurry bin is provided with a spiral conveyor, the front end of the spiral conveyor is installed at the bottom of the slurry bin, the rear end of the spiral conveyor is connected with a slag slurry box, a crusher is installed inside the slag slurry box, a slurry bin direct discharge pipe is further installed at the bottom of the slurry bin and staggered with a slag outlet of the spiral conveyor in space, the rear end of the slurry bin direct discharge pipe bypasses the slurry box to be connected with a main slurry discharge pipe, the upper portion of the air cushion bin is connected with an air pressure maintaining system, the lower portion of the air cushion bin supplements slurry through an air cushion bin slurry inlet pipe, and the air cushion bin slurry inlet pipe communicates with the main slurry inlet pipe. The air cushion type slurry balance shield tunneling machine has two tunneling modes, the two tunneling modes both adopt an air cushion balance mode, on-line rapid switching can be achieved, different tunneling modes can be selected according to different stratums, the application range of the slurry balance shield tunneling machine is widened, and the problem of stagnant discharge frequently occurring in a conventional slurry balance shield tunneling machine is solved.

Description

technical field [0001] The invention relates to the technical field of shield machines, in particular to an air-cushion mud-water balance shield machine and a construction method for solving the problem of stagnation. Background technique [0002] In recent years, with more and more tunnel projects across rivers and rivers, the use of mud-water balance shield machines is increasing. At present, when the existing mud-water balance shield machine passes through the broken zone, large pebble strata and mudstone stratum, there is a common phenomenon that the accumulation of mud and water slag blocks cannot be discharged smoothly. Increased shutdown processing time also increases construction risks, which seriously affects the tunneling speed of the shield machine; the current mud-water balance shield machine crusher is located at the bottom of the air cushion chamber, and the air cushion chamber needs to be exhausted during maintenance, which is inconvenient to operate and poses...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the technical problem of stagnation in conventional mud-water balance shield machines in the prior art, the present invention provides an air-cushion mud-water balance shield machine and its construction method for solving the stagnation problem, which is equipped with a screw conveyor for slag discharge excavation mode and mud-water bunker straight-row excavation mode, both excavation modes adopt the air cushion balance method, and the two modes can be quickly switched online. For different strata, different excavation modes can be selected, which broadens the scope of application of the mud-water balance shield machine and solves the problem of The stagnant discharge problem that often occurs in conventional mud-water balance shield machines

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