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A platform for research: civil engineering, architecture and urbanism
GROUND WATER LEVEL LOWERING METHOD
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
【課題】地下水位が比較的深い位置にある場所に山留を設置して地盤を掘削するに際し、揚水装置を用いて簡易に地下水位を低下させる。【解決手段】揚水装置２０は、地下水を揚水するための複数の揚水管２２と、複数の揚水管２２の各々の上端部２２ａに接続され、かつ、水平に延びるヘッダー管２３と、ヘッダー管２３内を負圧状態にする吸引手段（真空ポンプ２４）と、複数の揚水管２２の各々の下端部２２ｂに設けられるウェルポイント２１とを備える。揚水装置２０を用いて地盤Ｇの地下水位ＷＬを低下させる工法は、地盤Ｇのうち山留１０によって区画される領域Ｐを所定深さＤ１分掘削して形成された空間部３０内にヘッダー管２３を設けることを含む。【選択図】図６
GROUND WATER LEVEL LOWERING METHOD
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
【課題】地下水位が比較的深い位置にある場所に山留を設置して地盤を掘削するに際し、揚水装置を用いて簡易に地下水位を低下させる。【解決手段】揚水装置２０は、地下水を揚水するための複数の揚水管２２と、複数の揚水管２２の各々の上端部２２ａに接続され、かつ、水平に延びるヘッダー管２３と、ヘッダー管２３内を負圧状態にする吸引手段（真空ポンプ２４）と、複数の揚水管２２の各々の下端部２２ｂに設けられるウェルポイント２１とを備える。揚水装置２０を用いて地盤Ｇの地下水位ＷＬを低下させる工法は、地盤Ｇのうち山留１０によって区画される領域Ｐを所定深さＤ１分掘削して形成された空間部３０内にヘッダー管２３を設けることを含む。【選択図】図６
GROUND WATER LEVEL LOWERING METHOD
地下水位低下工法
YASUNAGA MASAMICHI (author)
2019-11-21
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
METHOD FOR LOWERING GROUND WATER LEVEL AND SYSTEM FOR LOWERING GROUND WATER LEVEL
| European Patent Office | 2015
| Engineering Index Backfile | 1925
Contribution to theory of lowering of ground water level
| Engineering Index Backfile | 1959
| Wiley | 1918