US 11,680,390 B2
Non-powered seawater pumping system for reducing seawater intrusion, and apparatus and method for optimal design of well in the same system
Namsik Park, Busan (KR); and Byunghee Nam, Busan (KR)
Assigned to DONG-A UNIVERSITY RESEARCH FOUNDATION FOR INDUSTRY-ACADEMY COOPERATION, Busan (KR)
Filed by DONG-A UNIVERSITY RESEARCH FOUNDATION FOR INDUSTRY-ACADEMY COOPERATION, Busan (KR)
Filed on Sep. 21, 2020, as Appl. No. 17/26,312.
Application 17/026,312 is a division of application No. 15/520,305, granted, now 10,815,648, previously published as PCT/KR2017/000219, filed on Jan. 6, 2017.
Claims priority of application No. 10-2016-0151781 (KR), filed on Nov. 15, 2016.
Prior Publication US 2021/0002872 A1, Jan. 7, 2021
Int. Cl. E03B 3/11 (2006.01); E02B 1/00 (2006.01); E03B 3/15 (2006.01); G06F 30/28 (2020.01); E02D 19/10 (2006.01)
CPC E03B 3/11 (2013.01) [E02B 1/00 (2013.01); E03B 3/15 (2013.01); G06F 30/28 (2020.01); E02D 19/10 (2013.01)] 4 Claims
OG exemplary drawing
 
1. 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 comprising:
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 having a cylindrical shape of which an upper portion is opened, the well being 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,
wherein:
the pumping pipe is filled with seawater,
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,
the seawater that flows into the well through the through holes is filled up to a groundwater level, and
when a level of the seawater in the well is higher than the sea level, the non-powered seawater pumping apparatus performs non-powered pumping of the seawater in the pumping pipe to a sea,
wherein:
at least one of a location of the well, a screen height of the well, and a diameter of the pumping pipe is determined based on at least one of a target time ratio, a boundary reduction volume ratio, and a boundary reduction area ratio;
the target time ratio is proportional to a ratio of a target boundary arriving time to a reduced target time;
the boundary reduction volume ratio is proportional to a ratio of a volume affected by seawater after pumping to a volume affected by seawater prior to pumping; and
the boundary reduction area ratio is proportional to a ratio of a reduced area of the boundary surface after pumping to an initial area of the boundary surface prior to pumping.