Abstract: According to an embodiment, there is provided a method for mitigating seawater intrusion in the ground where an aquifer having a seawater-fresh water interface is formed, the method including: installing an injection well at a point on an inland area, spaced apart from the sea by a predetermined distance, to a predetermined injection depth (d), the injection well having a predetermined screen height; injecting seawater into the aquifer by a predetermined quantity of injection through the injection well; and forming an upper seawater area around the injection well by the injection of the seawater, wherein the upper seawater area is an area that is filled with seawater in an upper portion of the aquifer.

Abstract: There is provided a method for determining an optimal condition for artificial recharge by using a computer in an artificial recharge system provided with an injection well for injecting fresh water into an aquifer, the method including: a step of calculating a maximum permissible quantity of injection of fresh water to be injected into the aquifer; a step of determining a height of a screen which is an area on a side surface of the injection well where penetrating holes are formed, based on the calculated maximum permissible quantity of injection; and a step of determining an injection pressure of the fresh water to be injected into the aquifer, based on the height of the screen.

Abstract: There is provided a method for determining an optimal condition for artificial recharge by using a computer in an artificial recharge system provided with an injection well for injecting fresh water into an aquifer, the method including: a step of calculating a maximum permissible quantity of injection of fresh water to be injected into the aquifer; a step of determining a height of a screen which is an area on a side surface of the injection well where penetrating holes are formed, based on the calculated maximum permissible quantity of injection; and a step of determining an injection pressure of the fresh water to be injected into the aquifer, based on the height of the screen.

Abstract: According to an embodiment, there is provided a method for mitigating seawater intrusion in the ground where an aquifer having a seawater-fresh water interface is formed, the method including: installing an injection well at a point on an inland area, spaced apart from the sea by a predetermined distance, to a predetermined injection depth (d), the injection well having a predetermined screen height; injecting seawater into the aquifer by a predetermined quantity of injection through the injection well; and forming an upper seawater area around the injection well by the injection of the seawater, wherein the upper seawater area is an area that is filled with seawater in an upper portion of the aquifer.