Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CUTOFF STRUCTURE FOR RADIOACTIVE WASTE DISPOSAL SITE, AND METHOD OF CONSTRUCTING THE SAME
Document Type and Number:
Japanese Patent JP2005048404
Kind Code:
A
Abstract:

To provide a cutoff structure for a radioactive waste disposal site, which easily and positively cuts off a water channel formed in a work area such as a gallery and an excavation influencing area, formed due to construction of the radioactive waste disposal site, and to provide a method of constructing the cutoff structure.

The cutoff structure for the radioactive waste disposal site is set in the work area such as the gallery and the excavation influencing area where the groundwater channel is formed, and a plug 20 for inhibiting flow of groundwater is constructed of timbering 12 consisting of backfill materials 11 generated in the gallery 1, bentonite grout 13 generated in the excavation influencing area, and bentonite segments arranged between the backfill materials 11 and the bentonite grout 13. Then rigid bulkheads 16, 16' are arranged at least on one side of the backfill materials forming the plug, and the gallery 21 of the work area in which the plug is formed so as to have a cross section smaller than the cross section of the other gallery 1.


Inventors:
Satoie, Mitsuo
Ishii, Taku
Application Number:
JP2003000204873
Publication Date:
February 24, 2005
Filing Date:
July 31, 2003
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SHIMIZU CORP
International Classes:
E02D3/12; B09B1/00; E02D19/12; E02D19/16; G21F9/36; (IPC1-7): E02D19/12; B09B1/00; E02D3/12; E02D19/16; G21F9/36
Attorney, Agent or Firm:
酒井 宏明
柳田 良徳
村田 幸雄