Examiner and Learner Guide For Opencast Mines | PDF

This document provides guidance for the assessment and certification of Blasting Certificate holders for opencast mines. It outlines the syllabus, assessment guidelines, score sheets, and sample questions and answers. The syllabus covers key areas like surface mine legal knowledge, practices and procedures, machinery, explosives transport and storage, …

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Optimization of blasting parameters and prediction of …

 — Mineral resources have changed the economic pattern of local cities to a certain extent, thus promoting the economic development of remote areas in China [3].Blasting technology not only determines the safety, quality, and cost of mining, but also has a significant impact on the subsequent bucket loading, transportation, crushing, and …

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Prediction of Blast-Induced Flyrock in Opencast Mines …

 — The aim of present study is prediction of blast-induced flyrock distance in opencast limestone mines using artificial intelligence techniques such as artificial neural network (ANN) and adaptive neuro fuzzy inference system (ANFIS). Blast design and geotechnical variables such as linear charge concentration, burden, stemming length, …

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Blasting Principles

The loss of ore to the waste mining stream during blasting or mining. Overburden. Layers of soil and/or rock covering an orebody. Overbreak. Rock breakage outside the designed profile or edge of the blast. P …

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Assessment of Blasting Quality of an Opencast Mine

Assessment of Blasting Quality of an Opencast Mine Mithilesh Kumar Rajak, G.K Pradhan, M. J. A. Prince Abstract: The goal of this study is to assess the blasting quality ... appropriate delay pattern, direction of blasting, and the blast hole environment also affect the blasting performance and hence the optimum fragmentation [8]. In this study ...

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Chapter 8 BLAST DESIGN

BLAST DESIGN (Figure 8-2) Staggered pattern (Figure 8-3) Sing (Figure 8-1) Square or rectangular pattern. 114 DELAY PATTERNS ... The economic analysis of the use of explosives is an important part of blasting operations in mining and construction. Explosives are energy, and the efficient use of this energy is a major factor in keeping rock ...

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Opencast Mining

Opencast mining destroys landscapes, forest, and wildlife habitat at the mining site when trees, plants, and topsoil are cleared from the mining area. ... A pattern of blast holes has been drilled into the overburden on the right of the image. The coal is removed by a power shovel and placed into trucks for haulage from the mine. (Photo: C. R ...

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Optimization of Blasting Operation in Opencast Mine

The holes drilled in a row may be single or multiple. So those two patterns are used, mainly in the opencast mines. They are: a) Single row blasting pattern b) Multi row blasting pattern Single row blasting pattern: In single row blasting pattern only one row of holes are drilled and charged in a bench face.

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