Deep underground

Last updated • 1 min readFrom Wikipedia, The Free Encyclopedia

Deep underground (大深度地下, dai-shindo chika) is a Japanese concept for the public use of deep underground, enabled by a 2001 law. It was first thought of in the late 1980s as Japan faced ever-increasing land values in the economic bubble, to allow the use of heretofore-unused deep underground for necessary water and utility ducts and other city tunnels.

Contents

However, due to technical difficulties in ventilation, emergency procedures and other safety-related issues and the relatively high cost, no projects using deep underground have been completed as of 2010.

Definition

In the case of public use, no compensation to the land owner is required.

Projects using the law

Projects anticipated to use the law

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