Coral island underground fresh water reservoir and construction method thereof

Abstract

The invention discloses a coral island underground fresh water reservoir and a construction method thereof. The coral island underground fresh water reservoir comprises an annular vertical anti-seepage body and an underground storable reservoir basin defined by the annular vertical anti-seepage body, the annular vertical anti-seepage body is an underground cutoff wall or an anti-seepage curtain, is arranged along the outer edge of a coral island reef and is used for changing the seepage boundary of underground water, the purpose of expelling salt water and storing fresh water is achieved, thebasic function of storing the fresh water in the reservoir is achieved, and the underground reservoir basin is an underground loose coral gravel soil body defined by the annular vertical anti-seepagebody. According to the coral island underground fresh water reservoir and the construction method, the occurrence form of the underground fresh water of the coral island reef is changed, so that the small coral island reef which is not easy to form an underground fresh water lens body in a natural state can also form an underground fresh water resource; the underground fresh water is intercepted,the total amount of the underground fresh water resource is increased, the problems that under the natural state, the available fresh water amount of the coral island reef is small, and the fresh water lens body is unstable and fragile are effectively solved, and social and economic benefits are remarkable; and surface vegetation conservation is facilitated, and ecological benefits are remarkable.

Description

technical field [0001] The invention relates to underground reservoirs in the fields of water conservancy, municipal and environmental engineering, in particular to a coral island underground freshwater reservoir and a construction method thereof. Background technique [0002] Coral islands and reefs have special topographic and geological conditions. The freshwater resources on the island are scarce, there is no surface freshwater, and only a small amount of underground freshwater resources; the underground freshwater resources depend on the freshwater lens floating above the salt water in the groundwater. The freshwater lens has a special shape, and its size and thickness are limited by factors such as the size, shape, hydrology and geology of coral islands, and freshwater resources are generally limited. The size and thickness of the freshwater lens are most affected by the area of ​​the island. The size and thickness of the island are different depending on the area. For...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the development of underground freshwater resources on coral islands and reefs that existing underground freshwater resources rely on natural freshwater lenses, the amount of freshwater resources is small, and the water body is fragile and vulnerable to damage, so as to significantly increase the underground freshwater storage of coral islands and reefs, and It can be exploited and utilized stably. The present invention provides a coral island underground freshwater reservoir and its construction method that can change the form of underground fresh water in coral islands, significantly increase the amount of underground fresh water, and have functions such as regulation and storage. It can be widely used in water conservancy, municipal and other fields. Environmental engineering field

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