Sentence examples for based on rock mass from inspiring English sources

A support matrix is presented based on rock mass quality and stress level for safe rapid drift development.

However, these empirical design guidelines for tunnel support based on rock mass classification systems failed to analyze the support performance.

The predicted results have been compared with the results obtained via existing approaches, based on rock mass quality (Q) and rock mass number (N).

Because classification methods are based on rock mass quality empirical evaluation through specific parameters, however, the determination of the rock mass properties to evaluate rock mass quality and also the stand-up time is very difficult in in-situ.

These methods are the (1) empirical methods based on rock mass rating (RMR) and rock mass quality index (Q-classification systems), (2) ground support interaction analysis (GSIA) and (3) numerical methods, namely, Phase2 finite element (FEM) program.

Finally, the empirical methods based on RQD are used to determine the deformation modulus and unconfined compressive strength of rock masses at five different sites including 13 cases, and the results are compared with those obtained by other empirical methods based on rock mass classification indices such as rock mass rating (RMR), Q-system (Q) and geological strength index (GSI).

The main objective of this study is application of RES for calculating geology and rock mass related downtimes index (GRDi) based on predominant rock mass properties and rock mass related downtimes.

This paper reviewed the current empirical approaches, and detailed weak rock mass strength calculations based on rock matrix, joint layout, joint condition and external factors.

Based on rock engineering system and computer programming technology, an approach to automated zonation and classification of rock mass is presented in this paper.

Based on the rock mass damage model obtained by back analysis of microseismic information, the rock mass elements within the microseismic damage zone are automatically searched by finite element program.

Based on the rock mass failure behavior law under complex stress state and the s2-dependence on the rock mass strength, we proposed a Modified Mohr-Coulomb (M-MC) strength criterion which is smooth and convex.