Sealing considerations for repository shafts in bedded and dome salt; technical report
|Corporate Authors:||D'Appolonia Consulting Engineers, Albuquerque, NM|
|Source:||Columbus, OH [ONWI (Battelle Memorial Institute, Office of Nuclear Waste-Isolation), Vol.255, 144p. Publisher: Battelle Memorial Institute, Office of Nuclear Waste-Isolation,], United States. ISSN: 0730-2800|
|Note:||In English. 31 refs.|
|Summary:||The geologic and hydrologic data base for penetration seal designs referenced to the Los Medanos bedded salt site in New Mexico and to four candidate salt domes in the Gulf Interior is reviewed. Examples of unsatisfactory shaft performance are given, pointing to the importance of proper construction procedures and maintenance during operation. Possible construction procedures for repository shafts are reviewed, noting advantages and disadvantages with respect to repository sealing. An important consideration with respect to sealing is that grouting operations (or freezing should it be used) should not establish connections between the top of salt and water-bearing zones higher in the stratigraphic section. Generally, it is concluded that Los Medanos and the dome salt sites are favorable candidate repository sites from the point of view of sealing. An important factor taken into consideration is the creep response of the salt which should tend to close any fractures that exist initially at the seal-salt interface or in any disturbed zone in the salt.—Modified report abstract.|
|Subjects:||Design; Engineering geology; Ground water; Radioactive waste; Salt domes; Sealing; Surveys; Waste disposal; Carlsbad New Mexico; Eddy County New Mexico; Gulf Coastal Plain; Louisiana; New Mexico; Texas; United States; Los Medanos; Repositories; Shafts|
|Copyright Information:||GeoRef, Copyright 2018 American Geosciences Institute.|
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