Treatment method for blow-filling foundation on islands and reefs in South China Sea with carbonate sand

Abstract

The invention discloses a treatment method for blow-filling a foundation on islands and reefs in South China Sea with carbonate sand. The method comprises the steps that 1, construction and measurement are conducted; 2, a conveying pipe is laid; 3, a dredge boat sucks seabed carbonate sand; 4, a microorganism bacteria solution and a nutrient solution are prepared; and 5, materials are sufficiently aerated and stirred in a mixing tank. The treatment method has the beneficial effects that a microorganism curing agent is added into the mixing tank, so that microorganisms and the carbonate sand are sufficiently stirred and mixed in the mixing tank, then the mixed carbonate sand blow-fills a reef, and then the processed foundation is formed. In this way, after a period of time, the strength, deformation and stability of the processed foundation formed by the mixed carbonate sand all meet the engineering construction requirement, and other redundant foundation treatment measures are not needed. The treatment method has the remarkable characteristics that construction is convenient, the project cost is low, the construction period is remarkably shortened, and pollution to the environment is avoided.

Description

technical field [0001] The invention relates to a treatment method for calcareous sand foundation, in particular to a treatment method for dredging filling calcareous sand foundation on islands and reefs in the South China Sea. Background technique [0002] At present, most islands in the South China Sea are constructed by blowing sand and filling reefs. The advantages of adopting this method are: fast island formation, large scale and high efficiency. my country's coastal cities use this method to create hundreds of square kilometers of land every year, which is of considerable value. South China Sea islands and reefs have two major advantages: one is rich in sea sand resources, and the other is rich in reef resources. Such as a reef with a lagoon, the coral sand in the lagoon is tens of meters thick. There are also many useless reefs around it. The reefs in the South China Sea cover an area of ​​tens of thousands of square kilometers, and the potential for island build...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a treatment method for the calcareous sandy soil foundation of the South Chin