INSTALLATION EQUIPMENT FOR CABLE LOGGING ANCHORS IN ROCKY SOILS

We developed equipment to install tipping anchors in rocky soils, for guylines and tailholds of cable logging equipment. The installation device consisted of a commercially-available pneumatic rotary-percussion drill, accessories and a custom lightweight support frame. The equipment is powered by a 5 m3/min (185 standard cfm) compressor and the components can be hand-carried to off-road anchoring sites located within 60 m (200 ft) of the compressor. This distance is limited by pressure losses in the air hose connecting the compressor and drill. Installation times per anchor, including preparing the equipment, drilling a 75 mm (3 in.) pilot hole and driving the anchor to a depth of approximately 3 m (10 ft), averaged 70 min for a crew of two relatively inexperienced people