نتایج جستجو برای: stoping

تعداد نتایج: 94  

Journal: :Mining of Mineral Deposits 2022

Purpose. The solution to one of the important problems underground mining method is substantiate cost-effective, technologically feasible and safe variants for steeply dipping low-thickness ore bodies. Methods. Mining systems are substantiated on basis a detailed analysis developed existing experiential bodies, identifying production economic disadvantages, as well their causes. Findings.As res...

2009
S. Surti P. S. Raby

The main thrust for this work is the investigation and design of a positron emission tomography (PET) scanner based on new Lanthanum Halide scintillators. In three–dimensional (3-D) PET the major limitations are scanner dead-time and ability to reject randoms and scatter. Therefore, to reach the full potential of 3-D PET requires a scintillator with good timing resolution and good energy resolu...

2017
Jian Deng

In underground mining, hydraulic backfill materials, such as waste tailings, river sand, and cement, are often used to fill underground mined stopes. In cut-and-fill mining methods with blasthole stoping and delayed backfill, after extraction of adjacent pillars that contain economic minerals, the backfill is often subject to exposure of free standing on at least one side. A key concern for min...

2010
A. SMIT G. LANE

This paper discusses the optimization of the mine design and scheduling as it is applied at Anglo Platinum and more specifically, the rationale for and use of the Anglo Platinum Mine Optimisation Tool (APMOT), which has been jointly developed between Anglo Platinum and Cyest over the past four years. Mine optimization is an inherently iterative process since all facets of mine design and schedu...

Journal: :Applied sciences 2021

Mobile robots are no longer used exclusively in research laboratories and indoor controlled environments, but now also dynamic industrial including outdoor sites. Mining is one industry where autonomous vehicles increasingly to increase the safety of workers, as well augment productivity, efficiency, predictability processes. Since navigate inside tunnels underground mines, this kind navigation...

Journal: :Adv. Model. and Simul. in Eng. Sciences 2015
Sergio Zlotnik Pedro Díez David González Elías Cueto Antonio Huerta

The proper generalized decomposition (PGD) requires separability of the input data (e.g. physical properties, source term, boundary conditions, initial state). In many cases the input data is not expressed in a separated form and it has to be replaced by some separable approximation. These approximations constitute a new error source that, in some cases, may dominate the standard ones (discreti...

Journal: :Cogent engineering 2022

Mindola mine ore formation in Zambia comprises an interbedded sequence of argillites thinly banded to laminated dolomite and argillite. As a result varying body characteristics, the has previously used different mining methods leading increased cost. This study applies Analytic Hierarchy Process (AHP) determine production method that fulfills applicability requirement for section ore-body below...

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