LAUSR

The propulsion module of an anchor-hole driller controls the drilling speed with a hydraulic cylinder that provides the axial force when driving a drilling rig to break the surrounding rocks. This drilling process is traditionally controlled manually by operators that tend to set the machine at the maximum drilling speed. In typical conditions in which the surrounding rocks have variable hardness and density, drilling at a fixed speed results in inefficiencies due to broken drill pipes, and even more severe faults. To reach the optimal operation of an anchor-hole driller, appropriate control of the drilling speed according to the characteristics of the surrounding rocks is required.