نتایج جستجو برای: stoping
تعداد نتایج: 94 فیلتر نتایج به سال:
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...
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...
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...
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...
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...
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...
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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