Title:
STRATIFIED PUMPING WELL
Document Type and Number:
Japanese Patent JP3338909
Kind Code:
B2
Abstract:
PURPOSE: To provide a simple stratified pumping well capable of separately pumping water from a plurality of aquifers.
CONSTITUTION: A drilled hole 31 is formed, so as to penetrate an impermeable layer 1 and reach an aquifer 3 existing underneath and, then, the hole is internally divided into upper and lower sections at the position of the layer 1 via a water stop screen 34, so as to be capable of stopping water. Also, a plurality of well tubes 33 and 34 respectively corresponding to aquifers 2 and 3 as pumping objects are arranged, so that the screens 35 and 36 respectively come to be located at the positions of the aquifers 2 and 3. Then, ground water flowing from each aquifer into the tubes 33 and 34 is pumped up with lifting pumps 39 and 40.
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Inventors:
Noriharu Miyake
Nobuaki Kosaka
Tsutomu Kobayashi
Hiroshi Nakatsuka
Nobuaki Kosaka
Tsutomu Kobayashi
Hiroshi Nakatsuka
Application Number:
JP413994A
Publication Date:
October 28, 2002
Filing Date:
January 19, 1994
Export Citation:
Assignee:
Shimizu Construction Co., Ltd.
International Classes:
E03B3/12; E02D19/10; E21B43/14; (IPC1-7): E03B3/12; E02D19/10; E21B43/14
Domestic Patent References:
| JP5837241A | ||||
| JP4112947U | ||||
| JP6180890U |
Attorney, Agent or Firm:
Yoshinori Yanagita (3 others)
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