

🔩 SPLIT SET: WHEN IT APPEARS INSTALLED… BUT IS NO LONGER FUNCTIONING In underground mining, what is not verified… is assumed. And that is the cause of many incidents. The Split Set (friction bolt) is one of the most widely used systems due to its speed and efficiency. However, its performance depends entirely on correct interaction with the rock mass. And here lies the critical point: A Split Set may be installed, yet it may not necessarily be providing effective ground support. ⚙️ What should actually be happening? For proper operation, the system relies on: 🧲 Uniform friction along the entire length of the bolt 🪨 Continuous contact with the borehole wall ⚖️ Load transfer to the rock mass 🔧 Installation with appropriate energy and depth If this does not occur, the system loses efficiency without being visibly apparent. ⚠️ Conditions that reduce its effectiveness ❌ Oversized boreholes ❌ Rock that is excessively fractured or incompetent ❌ Incomplete or shallow installation ❌ Absence of an appropriate confinement plate ❌ Lack of field control 🦺 What many overlook The Split Set is not a rigid anchor. Its capacity depends on the condition of the rock mass. Its efficiency may change over time (ground deformation). It must be evaluated as part of an integrated ground support system. In mining, the difference lies between “placed” and “functioning”. 📞 992 022 313 PROMINE PERÚ S.A.C. Ground Support Solutions for Underground Mining