Open caisson automatic sinking device and construction method

Abstract

The invention discloses an open caisson automatic sinking device and a construction method. The device is characterized in that the open caisson automatic sinking device is composed of a working platform, a vertical connecting frame, an electric rotating roller, submerged electric soil cutting blades, a submerged stirrer assembly, a booster pump, soil cutting high-pressure water spray nozzles, a deviation rectification high-pressure water spray nozzle assembly, a suction pipe, a sludge pump, a sludge output pipe, an electric control cabinet and the like. The open caisson automatic sinking construction method is characterized in that the high-pressure water spray nozzles are utilized for rushing soil and the submerged electric soil cutting blades are utilized for cutting the soil to achievea combined effect, so that the soil inside an open caisson is converted into sludge which is then transported to the outside of the open caisson, and open caisson sinking and deviation rectificationare achieved through automatic control over equipment via a control system. According to the device and construction method, unmanned operation on an open caisson sinking operation plane can be achieved, the sinking speed and deviation are controlled through the control system, and the open caisson sinking quality is guaranteed; and compared with other methods, the device and construction method can be used in watery and waterless operation environments, the construction intensity is relieved, the risk is lowered, the efficiency is improved, and the cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of underground engineering construction, and relates to an automatic caisson sinking device and a construction method. Background technique [0002] The construction of caisson is to make a bottomless cylindrical structure (caisson) on the ground first, and then take soil from the well under the enclosure of the wall of the caisson, so that the caisson will continue to sink under the action of its own weight and reach the design elevation position , and then back cover. Caissons are mainly used in bridge foundations, sewage inlet pumping stations, pipe jacking wells, equipment foundations, etc. [0003] There are three main methods of caisson construction. [0004] mechanical excavation [0005] The soil in the caisson is excavated by a small excavator combined with a bucket to move the soil. The disadvantages of this method are high requirements on the construction site, low work efficiency, and slow con...

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Problems solved by technology

[0010] In actual construction, the above methods have certain disadvantages, and there is a lot of room for improvement in terms of construction cost, construction progress, safety risk control, etc.

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