## Numerical Simulation of Rock Uniaxial Compressive

Meanwhile, five calculation models of heighttodiameter ratios of 10, 15, 20, 25, and 3 are used Through simulation calculation, we find that the rock model failure is more than complicated when the value of the heighttodiameter ratio is exceedingly low (1), but as the heighttodiameter ratio increases, the failure mode will become

Author: Zhichao Tian, Zhichao Tian, Chunan Tang, Chunan Tang, Hao Li, Hui Xing, Xiangda Ning## Evaluation of empirical estimation of uniaxial

The uniaxial compressive strength (UCS) of rock is an important parameter required for design and analysis of rock structures, and rock mass classification Uniaxial compression test is the direct method to obtain the UCS values However, these tests are generally tedious, timeconsuming, expensive, and sometimes impossible to perform due to

## Estimating Rock Mass Strength BM 1997 02

s = constant depending on the characteristics of the rock mass, σc = uniaxial compressive strength of the intact rock material, σ1 = major principal stress at failure, and σ3 = minor principal stress at failure The uniaxial compressive strength for the rock mass, σc, rockmass , can be expressed by setting σ3 = 0 in Equation 21 thus obtaining

## Estimating Rock Mass Strength BM 1997 02

s = constant depending on the characteristics of the rock mass, σc = uniaxial compressive strength of the intact rock material, σ1 = major principal stress at failure, and σ3 = minor principal stress at failure The uniaxial compressive strength for the rock mass, σc, rockmass , can be expressed by setting σ3 = 0 in Equation 21 thus obtaining