Multi-stage dust removal system for earth pressure/open dual-mode shield construction

Abstract

The invention discloses a multi-stage dust removal system for earth pressure / open dual-mode shield construction, and the problem of much dust in a 6m class earth pressure / open dual-mode shield or a hard rock TBM tunnel in the prior art is solved. The multi-stage dust removal system for the earth pressure / open dual-mode shield construction includes a spray dust removal system at a front dust risingplace, a dust dispersing route dust falling system and a duct dust collection system at a rear dust rising place which are successively arranged in a shield tunneling machine; the spray dust removalsystem at the front dust raising place includes a first spray dust removal device arranged on a soil bin partition plate; the dust dispersing route dust falling system includes a dust removal and cooling device and a second spray dust removal device, the dust removal and cooling device is arranged at the portion of a center hob, and the second spray dust removal device is arranged at a slag discharge opening of a drive box; and a dust collection position of the duct dust collection system at the rear dust rising place corresponds to a main machine belt conveyor According to the multi-stage dust removal system for the earth pressure / open dual-mode shield construction, the dust amount is reduced from the dust rising places, dust transmission in the dust transmission process is prevented andreduced, suspended dust is sucked from a dust outlet, multi-stage blocking and dust reduction are achieved, dust removal efficiency is improved, and dust content in a tunnel is lowered.

Description

Technical field [0001] The invention relates to the technical field of dual-mode shield construction, in particular to a multi-stage dust removal system for earth pressure / open dual-mode shield construction. Background technique [0002] At present, domestic and foreign 6m earth pressure / open dual-mode shields or hard rock TBMs due to the limited space at the main engine, most of the dust removal ducts are set above the front shield partition, and the dust removal effect is not ideal, usually resulting from the drive box and main engine belt The dust generated on the upper part of the machine is dispersed at the assembly machine and equipment bridge. Even if a shield machine with a larger diameter is equipped with a special dust suction duct in the main drive, the installation of a water spray at the slag outlet of the drive box does not solve the problem of dust dispersion along the speed of the belt conveyor. This phenomenon has seriously caused the harsh construction environm...

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Problems solved by technology

[0003] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a multi-stage dust removal system for earth pressure / open dual-mode shield construction, which solves the problem of 6m-level earth pressure / open dual-mode shield or hard rock TBM in the prior art. The dust removal duct cannot be arranged in a limited space, and there is a lot of dust in the tunnel

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