New application of rebound hardness numbers to generate igging of unconfined compressive strength in laminated shale formations

48th US Rock Mechanics / Geomechanics Symposium 2014

Volumn 2, Issue , 2014, Pages 972-978

  Lee, J S ^a   Smaliwood, L ^a   Morgan, E ^a  

^a CHESAPEAKE ENERGY CORPORATION   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

GEOMECHANICS; HARDNESS; MECHANICS; ROCK MECHANICS; ROCKS; SHALE; SPECIMEN PREPARATION;

EMPIRICAL EQUATIONS; HARDNESS NUMBERS; MECHANICS LABORATORY; NEW APPLICATIONS; PETROPHYSICAL MODELS; SHALE FORMATION; TEST SPECIMENS; UNCONFINED COMPRESSIVE STRENGTH;

COMPRESSIVE STRENGTH;

EID: 84927585057     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (18)

1. EQUOTIP Manual v.5. 2010. PROCEQ.
2. Lee, J.S., R.L. Maharidge, J.A. Franquet and A. Dick. 2012. Stress-dependent brittle-to-ductile deformation of tuff in geothermal wells. In Proceedings of the 46th US Rock Mechanics/Geomechanics Symposium, Chicago, IL, USA, 24-27 June 2012. Paper No. 12-306.
3. Leeb, D.H. 1978. New dynamic method for hardness testing of metallic materials. VDI-Report. 308: 123-128.
4. Aoki, H. and Y. Matsukura. 2004a. Relationship between the Equotip rebound value and unconfined compressive strength of intact rock sample. Transactions, Japanese Geomorphological Union, 25: 267-276 (in Japanese with English abstract).
5. Aoki, H. and Y. Matsukura. 2004b. Evaluation of strength reduction of weathered Aoshima sandstone using an Equotip rebound hardness tester. Transactions, Japanese Geomorphological Union, 25: 371-382 (in Japanese with English abstract).
6. Aoki, H. and Y. Matsukura. 2007. A new technique for non-destructive field measurement of rock-surface strength: an application of the Eqoutip hardness tester to weathering studies. Earth Surface Process and Landforms, 32: 1759-1769.
7. Aoki, H. and Y. Matsuhura. 2008. Estimating the unconfined compressive strength of intact rocks from Equotip hardness. Bulletin of Engineering Geology and the Environment, 67 (1) : 23-29.
8. Asef, M.R. 1995. Eqoutip as in index test for rock strength properties. M.Sc. Thesis, ITC Delft.
9. Atsushi, S., Y. Ryunoshin, O. Masahiko and S. Hiroyasu. 2002. Constituent material properties and clast-size distribution of volcano breccia. Engineering Geology, 64: 1-17.
10. Hack, R., J. Hingira and W. Verwall. 1993. Determination of discontinuity wall strength by Equotip and Ball Rebound Tests. Int. J. Rock Mech. Min. Sci. & Geomech. 30 (2) : 151-155.
11. Hack, R. and M. Huisman. 2002. Estimating the intact rock strength of a rock mass by simple means. Proceedings of 9th Congress of the International Association of Engineering Geology and the Environment, Durban SA, pp. 1971-1977.
12. Heather, V., G. Andrew, G. Stefan and L. Jennifer. 2011. The use of the Schmidt Hammer and Equotip for rock hardness assessment in geomorphology and heritage science: a comparative analysis. Earth Surf. Process. Landforms. 36: 320-333.
13. Sachi, W., M. Hiroyuki, T. Yukiya and M. Yukinori. 2006. Estimation of episodic exfoliation rates of rock sheets on a granite dome in Korea from cosmogenic nuclide analysis. Earth Surf. Process. Landforms, 31: 1246-1256.
14. Verwaal, W. and A. Mulder. 1993. Estimating rock strength with the Equotip hardness tester. Int. J. Rock Mech. Min. Sci. & Geomech. 30 (6) : 659-662.
15. Meulenkamp, F. 1997. Improving the prediction of the UCS, by Eqoutip readings using statistical and neural network models. Memoirs of the Centre for Engineering Geology in the Netherlands, 162: 127.
16. Meulenkamp, F. and M. Grima. 1999. Application of neural networks for the prediction of the unconfined compressive strength (UCS) from Equotip hardness. Int. J. Rock Mech. Min. Sci. 30: 29-39.
17. Papworths Construction Testing Equipment (PCTE). Equotip 3 -Non-destructive test for rock UCS. Equotip-3 for Rock Brochure, pp. 1-2.
18. Verwall, W. and A. Mulder. 2000. Rock and aggregate test procedures. Rock and aggregate laboratory manual, pp.13-14. Geotechnical Laboratory DGM, Thimphu Bhutan.