1.

Percussion drilling is unsuitable in _______(a) unconsolidated sand(b) unconsolidated gravel(c) consolidated rocks(d) quick sand

Answer» Correct answer is (d) quick sand

Easy explanation: 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.


Discussion

No Comment Found

Related InterviewSolutions