Construction process for reclamation by hydraulic filling of silt and device thereof

Abstract

The invention discloses a construction process for the reclamation by the hydraulic filling of silt and a device thereof. The device comprises a solidification treatment system A and a paving system B for improved slurry, wherein the A comprises a pumping device, an impurity screening device, a solidification agent storage device, a solidification agent conveying device, a compressed air conveying device and a mixed slurry stirring and conveying device; the B comprises a connecting pipe section, a hose or belt conveyer and a bearing and moving device. The construction flow comprises the following steps of: (1) filling the silt slurry into a filling region or sedimentation tank so as to form a stacked layer of thick silt slurry; (2) pumping the thick silt slurry with the pumping device, conveying the solidification agent into the thick silt slurry at the same time, and mixing the thick silt slurry and the solidification agent in a pipe in front of or behind a pump so as to form the mixed slurry; (3) conveying the mixed slurry to the stirring and conveying device to form the improved slurry; (4) conveying the improved slurry out to the paving system B through the connecting pipe section; and (5) laying the improved slurry to specified thickness by the paving system B. The device is characterized by fast, high-efficiency, simple and convenient operation.

Description

technical field

[0001] The invention relates to a construction technique and a device for land reclamation by dredging and filling silt, and belongs to the technical field of civil engineering foundation treatment. Background technique

[0002] In recent years, my country's coastal areas, such as the Bohai Bay area, the Yangtze River Delta, the Pearl River Delta area, and the Beibu Gulf area, are rapidly promoting land reclamation projects. Since 2005, the area of ​​land reclamation in China's coastal areas has been more than 100 square kilometers every year. In 2009, the area of ​​land reclamation reached 150 square kilometers. At present, most of the land reclamation projects in our country adopt the land reclamation method of dredging and filling silt, that is, blowing and filling the seabed silt into the enclosure, and turning the silt into a foundation with a certain bearing capacity after certain treatment.

[0003] At present, the main method to deal with these dredgi...

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