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Experimental Investigation of the Anisotropic Mechanical Properties of a Columnar Jointed Rock Mass: Observations from Laboratory-Based Physical Modelling
- Source :
- Rock Mechanics and Rock Engineering. 50:1919-1931
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- Because of the complex geological structure, determination of the field mechanical parameters of the columnar jointed rock mass (CJRM) was a challenging task in the design and construction of the Baihetan hydropower plant. To model the mechanical behaviour of the CJRM, uniaxial compression tests were conducted on artificial CJRM specimens with geological structure similar to that found in the actual CJRM. Based on the test results, the anisotropic deformation and strength were mainly analysed. The empirical correlations of evaluating the field mechanical parameters were derived based on the joint factor approach and the modulus reduction factor method. The findings of the physical model tests were then used to estimate the field moduli and unconfined compressive strengths of the Baihetan CJRM. The results predicted by physical model tests were compared with those obtained from the field tests and the RMR classification system. It is concluded that physical model tests were capable of providing valuable estimations on the field mechanical parameters of the CJRM.
- Subjects :
- Materials science
Field (physics)
business.industry
0211 other engineering and technologies
Modulus
Uniaxial compression
Geology
02 engineering and technology
Structural engineering
010502 geochemistry & geophysics
Geotechnical Engineering and Engineering Geology
Physical modelling
01 natural sciences
Geotechnical engineering
Rock mass classification
Anisotropy
business
Joint (geology)
Reduction factor
021101 geological & geomatics engineering
0105 earth and related environmental sciences
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 1434453X and 07232632
- Volume :
- 50
- Database :
- OpenAIRE
- Journal :
- Rock Mechanics and Rock Engineering
- Accession number :
- edsair.doi...........24f1185693cc544b593a5494bd8e8989