Pressure grouting of fractured basalt flows

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:473626

Shaw, P ^[1]; Phillips, S; Alexander, J ^[2]

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1. Idaho National Engineering Lab., Idaho Falls, ID (United States)
2. Westinghouse Hanford Company, Richland, WA (United States)

This report describes a field trial of pressure grouting in basalt and presents the results of subsequent coring and permeability measurements. The trial shows that hydraulic conductivity of fractured basalt bedrock can be significantly reduced by pressure injection of cementitious materials. The effectiveness of the pressure grout procedure was evaluated by measuring the change in the hydraulic conductivity of the bedrock. The extent of grout penetration was determined by analyzing postgrout injection drilling chips for the presence of a tracer in the grout and also by examining cores of the treated basalt. Downhole radar mapping indicated major lava flow patterns and follow water movement during a surface infiltration test. A site called Box Canyon, which is northwest of the Idaho National Engineering Laboratory (INEL), was chosen for the study because its surface outcrop geology is similar to the underlying bedrock fracture system at the INEL`s Radioactive Waste Management Complex (RWMC).

• OSTI ID: 473626
• Report Number(s): CONF-960804--Vol.1
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
BASALT
FRACTURED RESERVOIRS
GROUND DISPOSAL
GROUTING
HYDRAULICS
INJECTION
PERFORMANCE TESTING
SOLIDIFICATION