17. Equation 3.15 was generalized by Yudhbir et al. (1983) by replacing the unity on the right side by the constant A. Permitting A to vary between 1 and 0 offers a continuous variation of rock mass quality in the criterion of failure. They propose linking A to Barton's Q (see Chapter 2) according to the relation A = 0.0176QM. (a) Find a corresponding relationship between A and RMR. (b) Based on the answer to part (a), use Equation 3.15 to express th major principal stress as a function of confining pressure for a sandstone with M = 0.65, N = 5, qu= 2.0 MPa, and RMR = 50. C
17. Equation 3.15 was generalized by Yudhbir et al. (1983) by replacing the unity on the right side by the constant A. Permitting A to vary between 1 and 0 offers a continuous variation of rock mass quality in the criterion of failure. They propose linking A to Barton's Q (see Chapter 2) according to the relation A = 0.0176QM. (a) Find a corresponding relationship between A and RMR. (b) Based on the answer to part (a), use Equation 3.15 to express th major principal stress as a function of confining pressure for a sandstone with M = 0.65, N = 5, qu= 2.0 MPa, and RMR = 50. C
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Exercises at the end of the third chapter of Goodman's book Introduction to Rock Mechanics
![σ 1,2
(3.15)
qu
The constants N and M will be determined by fitting a curve to the family of
points
=1
σy
qu
*
1.p
qu](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8745b554-e61b-42b2-bb7a-6e5716b8c815%2F645ff21b-4015-4417-bae0-9487ec969d09%2Fkqsceek_processed.jpeg&w=3840&q=75)
Transcribed Image Text:σ 1,2
(3.15)
qu
The constants N and M will be determined by fitting a curve to the family of
points
=1
σy
qu
*
1.p
qu
![17. Equation 3.15 was generalized by Yudhbir et al. (1983) by replacing the
unity on the right side by the constant A. Permitting A to vary between 1
and 0 offers a continuous variation of rock mass quality in the criterion of
failure. They propose linking A to Barton's Q (see Chapter 2) according to
the relation A = 0.01760M.
(a) Find a corresponding relationship between A and RMR.
(b) Based on the answer to part (a), use Equation 3.15 to express th
major principal stress as a function of confining pressure
sandstone with M = 0.65, N= 5, qu = 2.0 MPa, and RMR = 50.
a](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8745b554-e61b-42b2-bb7a-6e5716b8c815%2F645ff21b-4015-4417-bae0-9487ec969d09%2Fiwqez7a_processed.jpeg&w=3840&q=75)
Transcribed Image Text:17. Equation 3.15 was generalized by Yudhbir et al. (1983) by replacing the
unity on the right side by the constant A. Permitting A to vary between 1
and 0 offers a continuous variation of rock mass quality in the criterion of
failure. They propose linking A to Barton's Q (see Chapter 2) according to
the relation A = 0.01760M.
(a) Find a corresponding relationship between A and RMR.
(b) Based on the answer to part (a), use Equation 3.15 to express th
major principal stress as a function of confining pressure
sandstone with M = 0.65, N= 5, qu = 2.0 MPa, and RMR = 50.
a
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