In the Rutshblock test, which outcome indicates nothing produced smooth slope parallel fractures?

• A. RB7 Nothing produced smooth slope parallel fractures
• B. RB1 Slide during digging/cutting
• C. RB5 Jump again
• D. RB4 Jump in same spot

Answer: (A)

In the Rutschblock test you’re looking at how a rock block fails when loaded and whether a smooth, slope-parallel fracture surface forms. The test uses a scale of outcomes to describe the failure mode, specifically capturing whether a clean, planar surface along the slope develops. When an outcome states that nothing produced a smooth slope-parallel fracture, it means no such clean surface was formed under the loading. The block failed in a different way—without creating that distinct, parallel fracture surface—which is why this outcome is the best match for indicating that no smooth slope-parallel fractures were produced. Other described outcomes reflect different failure behaviors (movement during preparation or abrupt, localized jumps) and don’t indicate the absence of a smooth slope-parallel fracture surface.