Diamond Core Drilling Method

Exploration diamond drilling differs from other geological drilling see drilling rig in that a solid core is extracted from depth for examination on the surface the key technology of the diamond drill is the actual diamond bit itself.

Diamond core drilling method. As shown in the figure the diamonds are scattered throughout the matrix and the. As diamond is the hardest naturally occurring material in the world it is ideal for creating openings in a range of materials including concrete metal and glass. The term diamond core drilling comes from the diamond bit drill used during this process. Where possible it is preferred over rab percussion rotary air blast drilling drilling and unlike the diamond drilling method which withdraws a small diameter core of rock from the orebody air core drilling is much faster and more cost effective.

It is composed of industrial diamonds set into a soft metallic matrix. Diamond core drilling utilizes less equipment than rc drilling but is more expensive because it is a time consuming process taking approximately 5 times as long to drill an equivalent amount of rock with diamond core drilling as with rc drilling. Diamond drilling allows for the removal of solid cylinders of rock core from deep within the earth. A diamond core drill bit is used by the drilling method repaired for the end of drill pole in the drilling unit or equipment.

Diamond drilling is a form of core drilling which uses a rotary drill with a diamond drill bit attached in order to create precisely measured holes. The stone bit is turned carefully and in the same time it s lubricated with water to stop overheating. Diamond drilling uses drill bits made of industrial diamonds. Diamond core drilling is a more accurate faster and more efficient method of drilling concrete masonry steel and asphalt structures.

Air core drilling is an inexpensive method of exploration drilling that can be employed when safe removal of sample material is paramount. It has been adopted for drilling upto a depth of 3000 m and hole diameter upto 200 mm. If using diamond core drilling added costs will include core bits drilling additives fuel and. Drilling upto such large depths is not required in coal mining areas where the maximum drilling depth is upto 1000 m as coal mines.

Diamond drilling method is suitable for drilling at any angle to obtain cores of friable strata as well as the hardest rock.