03/08/2011· Presplit drilling is nothing new. It is widely used around the globe and generally accepted as the standard method of creating safe final pit slopes for open pit mining. At the same time, there are many mines that could take advantage of the huge savings that can be gained by optimizing this operation using modern presplitting …
Pre-splitting can be defined as 'a technique using lightly charged, closely spaced holes to induce a fracture plane along a required design profile, which isolates the rock to be blasted from the surrounding rock mass'. The holes are generally fired instantaneously well in advance of any blasting in the adjacent rock.
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