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Similarity model tests of movement and deformation of coal-rock mass below stopes

✍ Scribed by Haifeng WANG; Yuanping CHENG; Liang YUAN; Liang WANG

Publisher
Elsevier
Year
2010
Tongue
English
Weight
495 KB
Volume
20
Category
Article
ISSN
1674-5264

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πŸ“œ SIMILAR VOLUMES

The deformation modulus of rock masses β€”
The deformation modulus of rock masses β€” comparisons between in situ tests and indirect estimates
✍ Arild PalmstrΓΆm; Rajbal Singh πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 393 KB

## Ε½ . Three methods of in situ deformation modulus Em measurements of rock masses have been described, analysed and Ε½ . compared. The plate jacking PJT test, where the deformations are measured by extensometers in drill holes, gives generally the best results. A factor of 2.5 has been found betwee