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Case study about drilling in the Angostura dam in Chile published

Case study about drilling in the Angostura dam in Chile published

The bedrock below the Angostura Hydroelectric Plant needed water-proofing, this was done by drilling 64 mm holes and then grouting with cement. The allowed borehole deviation was set to 2% at full length. Wassara managed to meet the requirement by far.

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The case study as PDF