Chubu Electric Power Company, Inc.

Ohbayashi Corporation

Makoto Toriihara

Makoto Hayakawa

Yozo Goto

Tadao Sugimoto

Tadao Koide

Tamotsu Endoh

Shigeki Tsuchiyama

Joji Ejiri

A conglomerate layer is formed horizontally on a base of ground which has a high water permeability and easily liquefies. A bottom plate is formed on the conglomerate layer to construct the underground structure thereon. One or more drainpipes are extended upwardly from the conglomerate layer through the bottom plate for draining excessive pore water in the ground.

Method of protecting underground structures in ground liable to be

A conglomerate layer is formed in ground which has a high water permeability and is liable to be liquefied. An underground base of the structure is constructed on the conglomerate layer. One or more drainpipes are extended substantially horizontally from the conglomerate layer through the underground base so as to communicate with the surface of the ground.

Method of protecting a structure constructed on ground liable to be

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Iruma, Japan

Makoto Toriihara