Nettetjoint roughness coefficient (JRC); anisotropy; scale effect; neutrosophic number; neutrosophic number function 1. Introduction According to the shear strength formula given by Barton [ 1] in 1973, the joint roughness coefficient (JRC) obtained effectively is quite a crucial parameter for determining the shear strength in rock mechanics. Nettet31. aug. 2024 · The Q -slope method requires the assignment of ratings for rock quality designation (RQD), joint set number ( J n ), joint roughness number ( J r ), and joint alteration number ( J a ), which remain unchanged from the Q-system (Barton et al. 1974 ). For Q-system users, the formula for estimating Q -slope is mostly familiar:
Correlations between rock mass intactness index
Nettet31.6.3 Joint roughness number ( Jr) When subjected to stress, smoother joints may slip and failure could occur before rougher joints. Due to this reason, joint roughness … NettetThe roughness of rock joints is recognized as one of the most important parameters affecting mechanical behavior [ 7, 8, 9, 10, 11 ]. Thus, quantitative characterization of discontinuity roughness has recently become a research hotspot in the field of … gold rope chain repair
Characterization of Joint Roughness Heterogeneity and Its
Nettet20. nov. 2015 · Shear behavior of rock mass greatly depends upon the rock joint roughness which is generally characterized by anisotropy, scale effect and interval … The second term J r (joint roughness number) divided by J a (joint alteration number) is related to the shear strength along the discontinuity planes and the third term J w (joint water parameter) divided by SRF (stress reduction factor) is related to the stress environment on the intact rock blocks and discontinuities … Se mer For the linguistics formalism, see Q-systems. For the genetic method, see Q-system (genetics). The Q-system for rock mass classification is developed by Barton, Lien, and Lunde. It expresses the … Se mer • Rock Structure Rating • Hoek-Brown failure criterion • Rock mass rating Se mer • Bieniawski, Z.T. "Engineering Rock Mass Classifications", John Wiley and Sons, New York, 1989 • Hack, H.R.G.K. (25–28 November 2002). "An evaluation of slope stability classification. Keynote Lecture.". In Dinis da Gama, C.; Ribeira e Sousa, L. (eds.). Proc. Se mer NettetJr (Joint Roughness Number), che dipende dalla rugosità della famiglia più sfavorevole; Ja (Joint Alteration Number), che dipende dal grado di alterazione delle fratture, dallo spessore e dalla natura del riempimento, e che viene ugualmente determinato sulla famiglia più sfavorevole; gold rope chain hollow vs solid