Construction method of water island reef blowing filling construction sand filling machine

Abstract

The invention discloses a construction method of a water island reef blowing filling construction sand filling machine. A reef sand receiving hopper is installed at the top of a vibrating screen; thevibrating screen is installed at the top of a platform; a crushing stirring tank for crushing reef sand is arranged on the outer side wall of a water flow separation tank and fixed at the top of the platform; the bottom of a drying pipeline is connected with the stirring tank; a drying box is arranged at the top of the stirring tank; the four corners of the bottom of the platform are provided withrollers which are supported on a rail of a sea filling area; the bottom of the platform is provided with a vibration buffering device; and the bottom of the stirring tank is connected with a rotatable sand discharge port. The large-particle-size reef sand is crushed and stirred through rotating fan blades of the sand filling machine, so that the large-particle-size reef sand particles are crushedto become smaller, the later-stage crushing stress of the reef sand is increased, the possibility that the bottom reef sand is crushed due to the increase of the gravity at the upper part in the later-stage filling process is greatly reduced, and thus a series of engineering problems of land subsidence, ground cracks and the like in the later stage are avoided.

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...

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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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