Curtain Grouting for the Antamina Dam, Peru: Part 2—Implementation and Field Modifications
Publication: Grouting and Ground Treatment
Abstract
Curtain grouting for the 140 m high dam at the Antamina Mine in the Peruvian Andes involved nearly 40,000 m of drilling and injection of 2,800 tons of cement. The curtain is 780 m long and as much as 95 m deep. This paper, the second of two, addresses execution of the grouting including required design modifications. The accompanying paper ("Curtain Grouting for the Antamina Dam, Peru: Part 1 — Design and Performance") presents the design and achieved performance of the curtain during reservoir impoundment. Grouting was specified using the GIN system. However, this led to formation damage and little reduction in the hydraulic conductivity of the rock. Following detailed analysis of the ground response to grout, using electronically acquired pressure/flow data, grouting procedures were revised to blend the best of the GIN approach with the key components of the Australian Method. Routine water pressure tests verified curtain closure. Final conductivities were less than 1.5 Lugeons (including the karst region), with many zones about 0.1 Lugeons.
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Copyright
© 2003 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Business management
- Cement
- Concrete
- Construction engineering
- Construction methods
- Continuum mechanics
- Dams
- Data analysis
- Developing countries
- Drilling
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Geotechnical engineering
- Grouting
- Hydraulic engineering
- Hydraulic structures
- Materials engineering
- Methodology (by type)
- Practice and Profession
- Pressure (type)
- Research methods (by type)
- Reservoirs
- Solid mechanics
- Water and water resources
- Water pressure
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