National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Measurement System for Systematic Hydrological Characterization of Unsaturated Fractured Welded Tuff in a Mined Underground Tunnel.

DE2003805440

Publication Date	2002
Personal Author	Cook, P. J.; Salve, R.; Freifeld, B. M.; Tsang, Y. W.
Page Count	32
Abstract	The possibility that certain locations in unsaturated, fractured geological environments may serve as possible disposal sites for high-level radioactive waste has in recent years spurred much research towards understanding of flow and transport phenomena in these settings. Water flow in unsaturated fractured rock is complex because it is affected by both the matrix and fracture properties, and the coupling between them, which in turn, is dependent on the degree of saturation. The intrinsic complexity of the flow processes, and the difficulty in interpreting and correlating measurements to flow and transport parameters, call for experiments executed under well-controlled conditions that are more easily attainable in the laboratory. On the other hand, because of the significant role of spatial scaling in flow phenomena, in-situ measurements are also indispensable. In this paper, we describe an experimental system for field investigations of flow and transport in partially saturated, fractured welded volcanic tuff. The in-situ measurements were designed to specifically address the issue of spatial variability.
Keywords	Tuff Fractured reservoirs High-level radioactive wastes Underground disposal Fluid flow Measuring Well logging Numerical modeling Liquid transport Boreholes Rock matrices Geologic fractures Fracture properties Hydrology Welded tuff
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Berkeley National Lab., CA. Earth Sciences Division.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200317

Measurement System for Systematic Hydrological Characterization of Unsaturated Fractured Welded Tuff in a Mined Underground Tunnel.

Measurement System for Systematic Hydrological Characterization of Unsaturated Fractured Welded Tuff in a Mined Underground Tunnel.
DE2003805440

Publication Date	2002
Personal Author	Cook, P. J.; Salve, R.; Freifeld, B. M.; Tsang, Y. W.
Page Count	32
Abstract	The possibility that certain locations in unsaturated, fractured geological environments may serve as possible disposal sites for high-level radioactive waste has in recent years spurred much research towards understanding of flow and transport phenomena in these settings. Water flow in unsaturated fractured rock is complex because it is affected by both the matrix and fracture properties, and the coupling between them, which in turn, is dependent on the degree of saturation. The intrinsic complexity of the flow processes, and the difficulty in interpreting and correlating measurements to flow and transport parameters, call for experiments executed under well-controlled conditions that are more easily attainable in the laboratory. On the other hand, because of the significant role of spatial scaling in flow phenomena, in-situ measurements are also indispensable. In this paper, we describe an experimental system for field investigations of flow and transport in partially saturated, fractured welded volcanic tuff. The in-situ measurements were designed to specifically address the issue of spatial variability.
Keywords	Tuff Fractured reservoirs High-level radioactive wastes Underground disposal Fluid flow Measuring Well logging Numerical modeling Liquid transport Boreholes Rock matrices Geologic fractures Fracture properties Hydrology Welded tuff
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Berkeley National Lab., CA. Earth Sciences Division.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200317