Air-compressing dry open caisson structure

Abstract

The invention relates to an air-compressing dry open caisson structure. The air-compressing dry open caisson structure is characterized in that the open caisson structure is divided into an open caisson main body structure and an air pressure chamber structure by a partition plate, and the open caisson main body structure is located on the upper portion and composed of a space defined by an upper caisson wall and the partition plate; the air pressure chamber structure is located on the lower portion and composed of a space defined by a lower caisson wall, the partition plate and a tunneling face soil body, and a working space is provided for open caisson construction excavation equipment; the partition plate structure is provided with a working hole, and a muck channel and an overhaul channel communicate the open caisson main body structure with the air pressure chamber structure through the working hole and are used for allowing muck, equipment and personnel to enter and exit from the air pressure chamber structure; a drainage channel enters a to-be-excavated soil layer through the working hole and is used for drainage in the air pressure chamber structure; and an air compressing system is located outside the open caisson structure, connected with the muck channel and the overhaul channel and used for controlling air pressure and purifying air. According to the air-compressing dry open caisson structure, open caisson construction operation can be conducted in a full-automatic and mechanized mode, the safety of the personnel is ensured, the labor cost is reduced, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to a compressed air dry caisson structure, which is applied in the fields of underground structures and foundation engineering in civil engineering. Background technique [0002] Caissons are widely used in municipal deep shaft projects such as underground intelligent garages, working wells of roadheaders, water diversion and storage wells, and bridge foundations. In strata with high water levels, undrained caissons are mostly used at present; but with the depth of caissons If the water level exceeds 50m or even reaches 100m, the waterproof requirements for the equipment will increase accordingly. Especially when the diameter of the caisson is large, there is a high demand for the waterproof level and pressure resistance of the power supply and control circuits, trolley lines, etc. It is technically difficult to use the equipment underwater, which limits the moving distance of mechanical equipment in large-diameter caissons. Con...

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Problems solved by technology

[0002] Caissons are widely used in municipal deep shaft projects such as underground intelligent garages, working wells of roadheaders, water diversion and storage wells, and bridge foundations. In strata with high water levels, undrained caissons are mostly used at present; but with the depth of caissons If the water level exceeds 50m or even reaches 100m, the waterproof requirements for the equipment will increase accordingly. Especially when the diameter of the caisson is large, there is a high demand for the waterproof level and pressure resistance of the power supply and control circuits, trolley lines, etc. It is technically difficult to use equipment underwater, which limits the movement distance of mechanical equipment in large-diameter caissons

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