ResearchArticle

Energy Dissipation-Based Method for Strength Determination of Rock under Uniaxial Compression

Table 2

Strength and dissipation energy coefficients at three different characteristic points.

Rock typesCompaction pointYield pointPeak point
(MPa) (MPa) (MPa)

Mudstone1.061.4031.770.4132.530.54
Physicochemical slate1.031.3131.010.3932.480.55
Schist1.151.7634.590.3141.110.53
Limestone1.091.4332.740.3237.150.54
Gneiss1.511.9335.220.3538.520.53
Sandstone1.652.0349.600.3255.640.51
Porphyrite1.852.2355.590.2965.770.48
Dolomites2.892.7786.700.2591.570.35
Shale2.812.6584.440.2890.030.39
Metamorphic sandstone3.062.8891.660.2299.660.33
Marble3.353.14100.400.21105.950.29
Quartz schist4.093.58122.840.17127.030.22
Quartzite5.234.05156.790.12164.360.16
Diorite6.444.54193.180.07207.440.1
Granite7.664.98229.700.03261.580.05