CONSTRUCTION METHOD OF EARTH RETAINING WALL

Japanese Patent JP3452217

B

PURPOSE: To make it possible to regain water permeability after the completion of the construction of an underground structure by forming the lower ends of an earth retaining wall up to the depth for balancing between active earth pressure and passive earth pressure, and forming a posterior water permeable cut-off wall crossing an artesian aquifer along the rear of the earth retaining wall or an earth retaining passive side.
CONSTITUTION: When an underground structure is constructed in a stratum for existing an artesian aquifer 14 in the depth deeper than an excavated surface 12 of an earth retaining wall 10, the earth retaining wall 10 is so constructed to the depth that the lower ends of the earth retaining wall 10 balance between active earth pressure and passive earth pressure. A posterior water permeable cut-off wall 18 crossing the artesian aquifer 14 so as to overlap with the lower ends of the earth retaining wall 10 is formed along the rear of the earth retaining wall 10 or an earth retaining passive side, or the posterior water permeable cut-off wall 18 is formed in the depth deeper than the lower ends of the earth retaining wall 10. By the constitution, during the construction of an underground structure 16, the flow of ground water in the artesian aquifer 14 is prevented by the posterior water permeable cut-off wall 18. After the construction of the underground structure 16, the flow of ground water in the artesian aquifer 14 can be ensured.

Nakajima, Makoto
Fujiki, Ikuo
Numazawa, Kenjiro
Nishio, Akira
Fukuda, Shuichi
Hosoya, Yoshio

JP1994000255542

July 18, 2003

October 20, 1994

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Teito, Kousokudo Kotsu Eidan
CONCRETE KOORING KK
MITSUI CYTEC KK

E02D19/12; E02D5/20; E02D29/05; E02D19/00; E02D5/00; E02D29/045; (IPC1-7): E02D19/12; E02D5/20; E02D29/05

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