Sand filling machine and construction method for dredging and filling construction of islands and reefs on water

Abstract

The invention discloses a sand filling machine construction method for water island reef blow-filling construction. The reef sand receiving bucket is installed on the top of the vibrating screen, the vibrating screen is installed on the top of the platform, and the outer wall of the water flow separation tank is provided with a reef sand breaking device. Broken mixing tank, the broken mixing tank is fixed on the top of the platform, the bottom of the drying pipeline is connected with the mixing tank, the top of the mixing tank is provided with a drying box; the four corners of the bottom of the platform are equipped with rollers, and the rollers Supported on the track of the reclamation area, a vibration buffer device is installed at the bottom of the platform; the bottom of the mixing tank is connected with a rotatable sand discharge port. The reef sand with larger particle size is crushed and stirred by the rotating fan blade of the sand filling machine, so that the reef sand particles with large particle size are broken and smaller, which increases the crushing stress of the reef sand in the later stage, and greatly reduces the impact of the upper reef sand on the bottom reef sand during later filling. The possibility of breaking due to the increase of gravity, so as to avoid a series of engineering problems such as ground subsidence and ground cracks in the later stage.

Description

technical field [0001] The invention relates to the field of dredging and filling construction, in particular to a construction method and a sand filling device for dredging and filling of coral sand islands and reefs in important projects. Background technique [0002] If the coral sand has high water content, large pores, poor particle size distribution, and poor geotechnical properties under pressure, such as coral sand filling, it will be difficult to detect after the sand filling is completed. There are engineering safety hazards such as large holes, low local bearing capacity, and easy collapse in the sand filling area, and if these hidden dangers can be detected, the cost of dealing with these engineering problems will be high; and sand filling problems are equivalent to unstable foundations , It poses a great threat to the safety of the upper structure and the life and property of the people and the country. Contents of the invention [0003] Aiming at the deficie...

AI Technical Summary

Problems solved by technology

[0002] If the coral sand has high water content, large pores, poor particle size gradation, and poor geotechnical properties such as fragility under pressure, etc., when filling sand on islands and reefs, it will be difficult to detect after the sand filling is completed. There are engineering safety hazards such as large holes, low local bearing capacity, and easy collapse that appear in the sand filling area, and if these hidden dangers can be detected, the cost of dealing with these engineering problems is high; and sand filling problems are equivalent to unstable foundations , which poses a great threat to the safety of the upper structure and the lives and properties of the people and the country

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