Title:
GROUND WATER LEVEL LOWERING METHOD
Document Type and Number:
Japanese Patent JP2019199767
Kind Code:
A
Abstract:
To easily lower a ground water level using a water pumping device when earth retaining is installed in a place where a ground water level is at a comparatively deep position and foundation is excavated.SOLUTION: A water pumping device 20 includes a plurality of water pumping pipes 22 for pumping ground water, header pipes 23 which are connected to each of upper ends 22a of the plurality of water pumping pipes 22 and extend in a horizontal direction, suction means (vacuum pump 24) which makes the inside of the header pipe 23 a negative pressure state, and well points 21 provided on each of lower ends 22b of the plurality of water pumping pipes 22. A method for lowering a ground water level WL of a ground G using the water pumping device 20 includes providing the header pipes 23 in a space part 30a formed by excavating a region P divided by earth retaining 10 in the ground G by a predetermined depth D1.SELECTED DRAWING: Figure 6
Inventors:
YASUNAGA MASAMICHI
Application Number:
JP2018095585A
Publication Date:
November 21, 2019
Filing Date:
May 17, 2018
Export Citation:
Assignee:
KAJIMA CORP
International Classes:
E02D19/10; E02D3/10
Domestic Patent References:
| JP2006057294A | 2006-03-02 |
Attorney, Agent or Firm:
Moriaki Ogawa
Haruyuki Nishiyama
Mitsuji Sekiya
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Ayako Nakamura
Satoshi Morimoto
Yu Tanaka
Tokumoto Koichi
Haruyuki Nishiyama
Mitsuji Sekiya
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Ayako Nakamura
Satoshi Morimoto
Yu Tanaka
Tokumoto Koichi