Numerical Investigation on Anisotropy and Shape Effect of Mechanical Properties of Columnar Jointed Basalts Containing Transverse Joints

Abstract We studied the non-linear mechanical response and failure mechanism of columnar jointed basalts (CJBs) with transverse joints by modeling meso-mechanics, statistical damage theory continuum mechanics. The anisotropy shape effect CJBs were captured under different lateral pressures. digital images transformed into heterogeneous element meshes, gradual fracturing process various modes reproduced. compressive strength (CS) equivalent deformation modulus (EDM) parallel perpendicular to column axis studied. results show that U-shaped CS curve CJB appears as dip angle increases, is obviously improved pressure increases when 0°–90°. When changes from 6 m × 3 m, 1.5 continues increase. Meanwhile, are proven be critical for determining properties at certain angles columns. However, high can reduce difference between without joints. Besides, elastic rises, will grow up, EDM increase first then almost remain same level. coefficient rock residual has a great influence on Additionally, model boundary significantly affects compression. These conclusions improve our knowledge mechanisms patterns containing