Achieving Effective Fragmentation

摘要

The confinement provided by the stemming column in a blasthole is an important controllable parameter that greatly influences both the release of energy and its proper utilization.This research paper investigates the influence of stemming confinement on fragmentation by blasting in a moderately strong (12.5-20MPa) sandstone formation at an opencast mine.The study highlights the influence of stemming length on better fragmentation results, and also proposes the concept of optimum stemming length under the given geo-mining conditions.