To investigate the influence of intersection structures on the mechanical properties and failure mechanisms of rock materials. a series of uniaxial compression tests on complete red sandstone specimens and specimens with various hole shapes (T-shape. cross-shape. and shaft-roadway-shape) were conducted by the Instron 1346 servo-controlled rock mechanics testing machine. https://www.diegojavierfares.com/super-super-Proven-Winners-reg-Fun-And-Games-reg-Eye-Spy-Foamy-Bells-special-save/