Geotechnical Analysis Report for July 2008-June 2009

Technical Report · Thu Apr 01 00:00:00 EDT 2010

DOI:https://doi.org/10.2172/990206· OSTI ID:990206

This Geotechnical Analysis Report (GAR) presents and interprets geotechnical data from the underground excavations at the Waste Isolation Pilot Plant (WIPP). The data, which are obtained as part of a regular monitoring program, are used to characterize conditions, to compare actual performance to the design assumptions, and to evaluate and forecast the performance of the underground excavations. GARs have been available to the public since 1983. During the Site and Preliminary Design Validation (SPDV) Program, the architect/engineer for the project produced these reports quarterly to document the geomechanical performance during and immediately after early excavations of the underground facility. Since completion of the construction phase of the project in 1987, the management and operating contractor for the facility has prepared these reports annually. This report describes the performance and condition of selected areas from July 1, 2008, to June 30, 2009. It is divided into nine chapters. Chapter 1 provides background information on WIPP, its mission, and the purpose and scope of the geomechanical monitoring program. Chapter 2 describes the local and regional geology of the WIPP site. Chapters 3 and 4 describe the geomechanical instrumentation in the shafts and shaft stations, present the data collected by that instrumentation, and provide interpretation of these data. Chapters 5 and 6 present the results of geomechanical monitoring in the two main portions of the WIPP underground (the access drifts and the waste disposal area). Chapter 7 discusses the results of the Geoscience Program, which include fracture mapping and hole observations. Chapter 8 summarizes the results of geomechanical monitoring and compares the current excavation performance to the design requirements. Chapter 9 lists references.

• Research Organization: Waste Isolation Pilot Plant (WIPP), Carlsbad, NM (United States)
• Sponsoring Organization: USDOE Office of Environmental Management (EM)
• Contributing Organization: Washington TRU Solutions LLC, Hanford, WA (United States)
• DOE Contract Number: AC29-01AL66444
• OSTI ID: 990206
• Report Number(s): DOE/WIPP-10-3177,_Volume_1
• Resource Relation: Related Information: DOE/WIPP-10-3177, Volume 2, contains the supporting data for this document.
• Country of Publication: United States
• Language: English

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