Engineering Rock Mechanics
482 Questions 20.7 -20.7 0: design of underground excavations about 2000 m and use these for injecting water at high pressure in ...
Questions 20.7-20.70: design of underground excavations 483 6~ = (56.20 - 3.304pA - 0.533~~) x 6c = (56.20 - 0.533pA - 3.304~~) ...
484 Questions 20.7 -20.7 0: design of underground excavations estimates of the surface subsidence profile and horizontal strain ...
Questions 20.7 -20. IO: design of underground excavations 485 420.8 In an attempt to improve the profitability of the mine in Q2 ...
486 Questions 20.7-20.70: design of underground excavations It is considered that the backfill will offer sufficient support to ...
References Amadei B. (1988) Strength of a regularly jointed rock mass under biaxial and axisyrnmetric loading. Int. I. Rock Mech ...
488 References complete stress-strain curve for intact rock in uniaxial compression. Int. J. Rock Mech. Min. Sci., 36, 3,279-289 ...
References 409 Langefors U. and Kihlstrom B. (1963) The Modern Technique of Rock Blasting. Wiley, New York, 405pp. Latham J.-P. ...
490 References abandoned chalk mine workings beneath Norwich City, Norfolk. Eng. Geol., Sonmez H. and Ulusay R. (1999) Modificat ...
Appendix -- A: 3-D stress cube model This cut-out can be copied and made into a cube. It is provided as an aide-memoire for the ...
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Appendix B: Hemisp herica I projection sheet The equal-angle hemispherical projection below can be copied and enlarged for use w ...
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Appendix C: Rock mass classification tables RMR and Q The following tables are provided to support the questions in Chapter 12 ...
496 Appendix C: Rock mass classification tables - RMR and Q Drill core aualitv RQD (%) t25 25-50 50-75 75-90 90-100 Rating: 3 8 ...
Appendix C: Rock mass classification fables - RMR and Q 497 (C) Effect of discontinuity orientations in tunnelling Strike perpen ...
498 Q-system of Rock Mass Classification Appendix C: Rock mass classification tables - RMR and Q RQD Jr Jw Q=- x-x- J,, J, SRF R ...
Appendix C: Rock mass classification tables - RMR and Q 499 Joint Alteration Number (J,) (i) Rock wall contact 0.75 1.0 2.0 (a) ...
500 Stress Reduction Factor (SRF) Appendix C: Rock mass classification fables - RMR and Q 10.0 5.0 2.5 7.5 5.0 2.5 5.0 2.5 1.0 ( ...
Appendix C: Rock mass classification tables - RMR and Q 501 loint Water Reduction Factor (.L) Approx. water pressure (kg/cm2) 1. ...
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