What is a blasthole drill rig?

Blasthole drill rigs are usually large tracked vehicles with an articulated mast that contains the main drilling components: the drill motor, drill rods, and drill bit. To drill to depths longer than the mast, drill rods can be concatenated to form a long drill string as drilling is progressing.

What happened to a blast hole drill rig mast?

A blast hole drill rig mast was being lowered from the vertical to horizontal position. Its top end was about 1 metre from its horizontal resting position when a bearing block capping bolt failed. This caused more bolts to fail and the mast thenfell close to its intended horizontal resting place, but causing considerable damage.

How is blast hole drilling performed?

Blast hole drilling has been performed by two different methods: Percussive drilling & Rotary drilling. Percussive Drilling is made up of Top Hammer or Down-The-Hole (DTH) Hammer. Percussive drilling utilizes all four drilling components - Feed, Rotation, Percussion, and Flushing.

What is a drill rig?

A drill rig preparing blast holes in an open cut mine prior to blasting. Drilled holes with red pipes to detonate with dynamite and clear the rock for construction. Stockholm, Sweden. Machine for drilling wells in the quarry. Machine for drilling wells in the quarry. Drilling of boreholes for laying an explosion in a quarry.

How big is the rotary blasthole drilling rig market?

The global rotary blasthole drilling rig market was valued at $2.60 billion in 2017 and is projected to reach $3.50 billion by 2025, growing at a CAGR of 3.7%. Factors such as increase in demand for metal and minerals, expansion of existing mines, and growth in construction of roads, tunnels, and railways drive the growth of the market.