Dong-A University Research Foundation for Industry-Academy Cooperation

Dong-A University Research Foundation for Industry-Academy Corporation

Namsik Park

Byunghee Nam

Roshina Babu

Sang Min Sung

Jae One Lee

Doo Pyo Kim

A method of designing an optimized seawater pumping apparatus, using a computer in a system in which a seawater pumping apparatus including a pumping pipe and a well disposed to surround a lateral surface of a land-buried portion of the pumping pipe is installed to reduce seawater intrusion in a land in which an aquifer with a seawater-fresh water boundary surface is formed, includes applying an optimization algorithm to initial condition data of the aquifer to generate n decision variable sets of the seawater pumping apparatus, applying an underground water flow model to each of the n decision variable sets to generate n prediction results of change in the seawater-fresh water boundary surface, calculating a performance evaluation value of each of the n prediction results, and selecting a decision variable set having a maximum performance evaluation value, where n is an integer and equal to or greater than 2.

Non-powered seawater pumping system for reducing seawater intrusion, and apparatus and method for optimal design of well in the same system

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.

Method for mitigating seawater intrusion by using seawater injection

The present disclosure relates to a method for measuring a water level by using a UAV and virtual water control points and a method for generating 3D water surface spatial information, and a UAV used therefor. According to an embodiment, an UAV for a water surface survey includes: a position measurement unit configured to receive a GPS signal and to obtain position information of the UAV; a distance measurement unit including a plurality of laser measurement devices configured to project lasers toward the water surface; and a controller configured to calculate a moving distance of the UAV, based on measurement values of the position measurement unit and the distance measurement unit.

Method for water level measurement and method for obtaining 3D water surface spatial information using unmanned aerial vehicle and virtual water control points

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.

Method for optimizing a design of artificial recharge

Disclosed is a non-powered seawater pumping apparatus for reducing seawater intrusion in a land in which an aquifer with a seawater-fresh water boundary surface is formed. The seawater pumping apparatus includes a pumping pipe having two open end portions, a first end portion of the open end portions being positioned below a sea level and a second end portion being positioned below the seawater-fresh water boundary surface in the land, and a well disposed to surround a lateral surface of a land-buried portion of the pumping pipe, which is buried in the land, so as to space away the land-buried portion of the pumping pipe from the land. The pumping pipe is filled with seawater, and the well comprises a screen having a plurality of through holes formed along a circumference of the well at a lower end portion of the well.

Disclosed is a non-powered seawater pumping apparatus for reducing seawater intrusion in a land in which an aquifer with a seawater-fresh water boundary surface is formed, the apparatus including a pumping pipe having opposite open end portions, a first end portion of the opposite open end portions being positioned below a sea level and a second end portion being positioned below a seawater-fresh water boundary surface in the land, and a well disposed to surround a lateral surface of a land-buried portion of the pumping pipe, which is buried in the land, so as to space away the land-buried portion of the pipe from the land, wherein seawater is filled in the pumping pipe, and the well includes a screen having a plurality of through holes formed along a circumference of the well at a lower end portion of the well.

Disclosed are a system and method for controlling land deformation, and a method for optimal design of a well in a system for controlling a well in a system for controlling land deformation. The land deformation control system with respect to a land including an confined aquifer and an aquiclude above the confined aquifer includes a first well for water pumping from or water injecting into the confined aquifer; and one or more second wells spaced apart from the first well by a predetermined distance and having a lower end portion positioned in the aquiclude, wherein a water level of the second well is maintained at a preset water level value to control an amount of change in water head of the aquiclude, which drops due to pumping of the confined aquifer or rises due to injection with respect to each of the second wells.

System and method for controlling land deformation, and method for optimal design of well in system for controlling land deformation

The invention relates to a design method for an underground reservoir injection-pumping system. According to one embodiment, provided is a design method for an underground reservoir injection-pumping system, comprising a first optimization step of optimizing a first determination variable related to injection wells and pumping wells on the basis of hydrogeological data of an underground reservoir, and a second optimization step of optimizing a second determination variable related to a pump and water pipe network to be installed in the underground reservoir, on the basis of variable values of the first determination variable derived in the first optimization step, wherein the first determination variable includes the numbers and the position data of injection wells and pumping wells to be installed in the underground reservoir, and the second determination variable includes data related to a pipe diameter distribution of water pipes and a pump specification for each well.

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Busan, South Korea

Namsik Park