give me a defination of A. auger boring B.percussion drilling C.diamond drilling D.wash boring.

Definition

Ashish
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Shruti
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Auger boring -> Auger boring is a non-steered method used to install pipes from 150mmØ to 1,000mmØ. During installation the pipe fully supports the ground while the cut spoil is conveyed by continuous flight auger back to the work pit..

Percussion drilling is a manual drilling technique in which a heavy cutting or hammering bit attached to a rope or cable is lowered in the open hole or inside a temporary casing. The technique is often also referred to as 'Cable tool'. Usually a tripod is used to support the tools.

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. 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...

Wash Boring. A popular method to drill larger size holes in soft formations. Casing with a casing crown attached is rotated into the ground and water is used to flush out the drilled formation. The HD70R is suitable for smaller diameter holes, and the HD180 and HD200, HD205P are ideal for larger diameter applications.