Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 5, 2011
Patent Application Number
12226926
Date Filed
May 1, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
A hole is drilled at a depth of about 5 to 6 m from the ground surface, a shelter outer shell floor slab 3 is provided, and a shelter inner shell 1 is provided thereon. Next, a load-bearing partition wall 6 is provided in the shelter inner shell 1, and thereafter a shelter outer shell 2 is provided and integrated. If required, a neutron beam-shielding shell 4 is provided at the outer surface-side of the wall section and the ceiling section of the shelter outer shell 2 or the shelter inner shell 1-side to subsequently backfill the beam-shielding shell 4.
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