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Author:
Debasis Barman
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2004-03-03 |
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Dear Friends,
If my rock mass is very weak in respect of shear strength so that conventional supports (Bolts and liners) can’t resist deformations, are there any alternatives to increase shear strength parameters (Particularly phi value) prior installation of support so that Rock-Support interaction after installation of support becomes effective,
If anyone have any idea please feel free to share with me,
Thanking you,
Debasis Barman
India
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Follow-up:
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Author:
Martin Curd
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2004-03-09 |
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You could try injection or permeation grouting but this is likely to be expensive. probably the best option is to treat the rock as a soil and design the excavation around this. Try publications by Evert Hoek, who also has a web page at rocscience.com
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Follow-up:
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Author:
Jimmy
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2004-04-19 |
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Hi, your rock is very fractured, probably Class IV or even V, in this case, you should not/or use less explosives during excavation so as to minimize possible disturbance on surrounding rocks.
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Follow-up:
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Author:
Sandin
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2004-05-02 |
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Would it be feasible to consider grout injection, or injection of resin into the rock mass? This is a fairly common response in coal mines that encounter difficult ground at the longwall face.
Best,
Sandin
http://sedward.home.netcom.com/petrography.html
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Return
to subject 'Geotechnical design and analysis'
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Follow-ups:
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Subject:
Excavation in Rocks 