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  Mécanisation et automat...  
Inititative sur la rupture du roc sans explosifs
Explosive-Free Rock Breakage (EFRB) Initiative
  Technologies émergentes...  
Ces sociétés, soit Agnico-Eagle, AREVA, Barrick Gold, CAMECO, IAMGOLD, KGHM, Vale et Rio Tinto, de concert avec Hydro-Québec, la Société de recherche et développement minier (SOREDEM) et CanmetMINES, participent à une initiative de recherche coopérative dont les travaux visent à élaborer une boîte à outils de techniques de rupture du roc sans explosif.
In spite of those limitations, possible breakthroughs in this technology have garnered serious interest by mining companies, who have already funded a number of large-scale EFRB projects. There are strategic drivers within the industry, such as an operational shift from open pit to underground mining, faster accessibility to orebodies and reduction in development costs, which are currently making EFRB an option that is being reconsidered by eight mining companies: Agnico-Eagle, AREVA, Barrick Gold, CAMECO, IAMGOLD, KGHM, Vale and Rio Tinto. They, along with Hydro-Quebec, the Societé de Recherche et Développement Minier (SOREDEM) and CanmetMINING are participating in a cooperative initiative to develop a toolbox of non-explosive rock breaking technologies that would be available for underground development at significantly higher advance rates than, but at cost of the same order of magnitude as, drill-and-blast. Ultimately, a matrix of technologies versus best applications would also be produced. In particular, the initiative will evaluate the field performance of selected technologies, compare selected technologies to drill-and-blast extraction performance through cost benefit analyses and identify potential equipment that would carry the selected technologies.
  Visite audio de la régi...  
Ce sont les glaciers de la période glaciaire qui ont taillé des gorges profondes dans le roc. Lorsque la glace a fondu, la mer a inondé ces vallées d’eau et formé des fjords.
Before the last ice age, the BC coast looked more like the much straighter coast of Washington state, to the south of us.
  gmi-imv-fra  
Dans un contexte de fracturation du roc sans explosif, nous utilisons la technologie des micro-ondes,
Within the context of the international explosive free rock breakage, we’re using microwave technology, ultrasonic technology,
  Technologies émergentes...  
L’élément d’innovation portant sur les technologies émergentes a pour objectif de régler les problèmes du secteur de l’extraction des minéraux qui exigent une approche de changements progressifs et de combler les lacunes que présentent actuellement certains procédés d’extraction ou de traitement du minerai.
The Emerging Technology innovation element is looking to address issues requiring step-change approaches to mineral extraction or to fill gaps in existing extraction or processing elements. This includes but is not restricted to Explosive Free Rock Breakage which investigates several new means of extraction, Hoisting Technologies innovations including non-destructive testing of wire-rope and innovation in synthetic and semi-synthetic hoist rope alternatives and the Reclamation of Sludge underground and in open-pits. All of these initiatives are conducted under the management of research consortia.
  La gravité ? | Earth Sc...  
Les matières qui constituent la Terre viennent compliquer l'étude de sa forme. Au fil des ans, nous avons appris que la Terre n'était pas une masse de roc solide, contrairement à ce que nous croyions.
The material that makes up the earth complicates the study of its shape. Over the years we've learned that the earth is not the mass of solid rock we thought it was. True, it's solid on the surface, but it's actually more like a candy that is hard on the outside with a soft squishy centre. The earth is actually made up of solid rock and liquid rock. That's right ­ liquid rock. Some parts of the earth are made up of rock that is so hot that it flows just like water! Even the solid material isn't all the same. Some rocks are heavier than others are. Then there are mountains and oceans to consider.
  ARCHIVÉE - La terre tre...  
Par exemple, à distance égale de l'épicentre d'un séisme de magnitude 6, un édifice reposant sur des dépôts meubles subira des vibrations plus importantes qu'un édifice semblable reposant sur un sol compact ou sur le roc.
We have learned from strong earthquakes in the past that the extent of earthquake damage is often a function of the type of geological materials on which a building is constructed. For example, given two similar buildings located at equal distances from the epicentre of an earthquake of magnitude 6, a building situated on thick deposits of clay or sand will be subject to more significant vibrations than one constructed on bedrock. Such an amplification of seismic waves generally results in more significant damage, which explains why most of the destruction caused by earthquakes in the Québec area has occurred in parts of the Lower Town and the Port of Québec. In the vicinity of steep inclines, the impact of an earthquake can vary. Along a rocky incline, rock falls may occur, while clay or sand slopes may be the setting for landslides.
  2011-12 DSDS Reporting ...  
À l’heure actuelle, RNCan met à l’essai des technologies de rupture du roc sans explosifs, en vue de réduire la quantité de résidus non nécessaires résultant de la rupture au moyen des technologies classiques.
Since it is not possible to completely eliminate mine waste, GMI research also focuses on better managing and disposing of mine waste. This involves preventing and treating acid-related drainage, minimizing and reprocessing waste, and developing alternative waste disposal technologies. NRCan is also advancing zero-discharge processes by “re-mining” existing waste materials to recover valuable metals and minerals. One project developed a process to recover approximately 80% of the zinc from water treatment sludge, which is the precipitated 'mud' where contaminants settle.
  Technologies émergentes...  
Les techniques d’excavation mécanique du roc sont employées dans l’industrie de l’exploitation minière des minéraux métallifères. Bien que des applications particulières des techniques de rupture du roc sans explosif (RRSE) se soient révélées un succès par le passé, leur utilisation généralisée ne s’est jamais concrétisée.
Mechanical rock excavation has been applied in the metal mining industry. While there have been successes in specific explosive-free rock breakage (EFRB) applications in the past, they have not led to general use. EFRB has not been able to adequately advance in the higher range of rock strength and rock abrasivity. Most often, the equipment developed does not possess the flexibility of application given the variable nature of the rock, the geometry of mineralization and the accessway layout of an underground metal mine.
  Technologies émergentes...  
Les techniques d’excavation mécanique du roc sont employées dans l’industrie de l’exploitation minière des minéraux métallifères. Bien que des applications particulières des techniques de rupture du roc sans explosif (RRSE) se soient révélées un succès par le passé, leur utilisation généralisée ne s’est jamais concrétisée.
Mechanical rock excavation has been applied in the metal mining industry. While there have been successes in specific explosive-free rock breakage (EFRB) applications in the past, they have not led to general use. EFRB has not been able to adequately advance in the higher range of rock strength and rock abrasivity. Most often, the equipment developed does not possess the flexibility of application given the variable nature of the rock, the geometry of mineralization and the accessway layout of an underground metal mine.
  2011-12 DSDS Reporting ...  
À l’heure actuelle, RNCan met à l’essai des technologies de rupture du roc sans explosifs, en vue de réduire la quantité de résidus non nécessaires résultant de la rupture au moyen des technologies classiques.
Since it is not possible to completely eliminate mine waste, GMI research also focuses on better managing and disposing of mine waste. This involves preventing and treating acid-related drainage, minimizing and reprocessing waste, and developing alternative waste disposal technologies. NRCan is also advancing zero-discharge processes by “re-mining” existing waste materials to recover valuable metals and minerals. One project developed a process to recover approximately 80% of the zinc from water treatment sludge, which is the precipitated 'mud' where contaminants settle.
  Innovations en extracti...  
Dans le cadre du thème des technologies émergentes, la gestion de plusieurs projets de recherche en cours est assurée par le biais d’un consortium de recherche. Les domaines des travaux comprennent celui de la rupture du roc sans explosif, des techniques de hissage et de la récupération et de la valorisation des boues.
In the Emerging Technologies theme, several fields of research managed under a consortium approach are underway, including Explosive Free Rock Breakage, Hoisting Technology and Sludge Reclamation and Beneficiation.
  Technologies émergentes...  
Les techniques d’excavation mécanique du roc sont employées dans l’industrie de l’exploitation minière des minéraux métallifères. Bien que des applications particulières des techniques de rupture du roc sans explosif (RRSE) se soient révélées un succès par le passé, leur utilisation généralisée ne s’est jamais concrétisée.
Mechanical rock excavation has been applied in the metal mining industry. While there have been successes in specific explosive-free rock breakage (EFRB) applications in the past, they have not led to general use. EFRB has not been able to adequately advance in the higher range of rock strength and rock abrasivity. Most often, the equipment developed does not possess the flexibility of application given the variable nature of the rock, the geometry of mineralization and the accessway layout of an underground metal mine.
  Sommet canadien de l’én...  
Les facteurs fondamentaux d’ordre économique et financier du Canada sont solides comme le roc. Le Canada est un allié des États-Unis qui croit en la libre entreprise, accueille favorablement les capitaux étrangers et est ouvert au monde des affaires.
Canada is a country with rock solid economic and fiscal fundamentals. An ally of the U.S. that believes in free enterprise, welcomes foreign capital and is open for business. A friend with a strong and fair legal system. And a neighbour whose resource potential offers a remarkable economic opportunity in the coming decades, an opportunity based on Canada's commodity boom.
  Initiative mines vertes...  
Dans un contexte de fracturation du roc sans explosif, nous utilisons la technologie des micro-ondes, celles des ondes ultrasoniques et de la torche au plasma dans le but d'affaiblir le massif rocheux.
Here in Val D’Or, we are applying some very special and exciting technologies in order to make mining greener underground, a lot more energy efficient. Within the context of the international explosive free rock breakage, we’re using microwave technology, ultrasonic technology, and plasma torch technology in order that weaken the rock, and use non-explosive means, such as disc cutting machines, like tunnel boring machines, in order to make the underground, create the underground openings
  Visite audio de la régi...  
La falaise de granit, qui fait 700 mètres de haut, a été gelée sous deux kilomètres de glacier grinçant pendant la période glaciaire. Ce sont des pierres pointues qui grattaient et qui étaient soutenues par de la glace qui se déplaçait lentement qui ont laissé leur empreinte artistique sur le roc.
One of the huge pieces of glacial art you will see along Highway 99 is a peak called Stawamus Chief, near Squamish. It’s known to many as just … ‘The Chief.’ The granite cliff is seven HUNDRED metres high and during the ice age, it was frozen beneath two kilometers of grinding glacier.  It was sharp, scratching stones held by the slow flowing ice that left their artistic mark on the rock.
  À toi de jouer ! | Eart...  
Lorsque la végétation est moins dense, elle prend des tons de rose. Dans les endroits où il n,y a pas de végétation (comme le roc, l'asphalte ou la terre nue), la couleur passe au bleu pâle. L'eau profonde est d'un bleu très foncé presque noir.
Here are two small sections of a satellite image of the Queen Charlotte Islands, off the coast of British Columbia. We used some visible light and some infrared light information in these images, to better show vegetation. Healthy and dense vegetation is red. As the vegetation gets less dense, it is shown as pink (less red). When there is no vegetation at all, like bare earth, rock or pavement, it shows up as light blue. The deep water is very dark, almost black.
  Visite audio de la régi...  
Les points de vue artistiques n’ont pas été créés uniquement par des glaciers froids : la lave chaude de plus de 1 000 degrés Celsius qui s’écoulait des volcans a formé des colonnes en refroidissant rapidement. Les colonnes polygonales taillées dans la paroi du roc sont une caractéristique distinctive de la route 99 à proximité de Whistler.
It’s not just chilly glaciers that created artistic vistas -- hot lava flowing from volcanoes formed columns as it quickly cooled down from more than a thousand degrees Celsius. The many-sided columns in the rock face are a distinctive feature of Highway 99 near Whistler.
  Feux de forêt | Earth S...  
Les tons de rouge et d'orange sont des surfaces brûlées récemment et les formes noires sont les lacs et les rivières. Autour des zones brûlées, les surfaces de couleur rose sont constituées de sol à nu et de roc où la végétation est absente.
In this satellite image, the yellow and green colours show unburned forest and other vegetation types. The red/orange colour is a recently burnt area. The black shapes are lakes and rivers. The small pink areas around the burn are unvegetated areas where rock shows through the soil. Notice that the fire was stopped mostly by reaching the edge of a river or lake. At other points, it probably stopped because of swamps or bare ground or because the wind reversed direction.
  Ressources naturelles C...  
Forage et fragmentation du roc
Biosolids to Bioenergy
  Ressources naturelles C...  
Initiative de la rupture du roc sans explosif
Rock drilling & Fragmentation
  Efficacité énergétique ...  
Fragmentation du roc éconergétique
Energy Efficient Rock Fragmentation
  Mécanisation et automat...  
Techniques de fragmentation du roc sans explosif
Non-explosive techniques for rock fragmentation
  Technologies émergentes...  
Les techniques d’excavation mécanique du roc sont employées dans l’industrie de l’exploitation minière des minéraux métallifères. Bien que des applications particulières des techniques de rupture du roc sans explosif (RRSE) se soient révélées un succès par le passé, leur utilisation généralisée ne s’est jamais concrétisée.
Mechanical rock excavation has been applied in the metal mining industry. While there have been successes in specific explosive-free rock breakage (EFRB) applications in the past, they have not led to general use. EFRB has not been able to adequately advance in the higher range of rock strength and rock abrasivity. Most often, the equipment developed does not possess the flexibility of application given the variable nature of the rock, the geometry of mineralization and the accessway layout of an underground metal mine.
  Efficacité énergétique ...  
L’approche globale « de la mine à l’usine de traitement » constitue un système d’optimisation de tous les procédés d’extraction minière et de traitement du minerai, de l’abattage au circuit de comminution, qui a pour but de réaliser des économies financières et énergétiques.
The mine-to-mill holistic approach is an entire mining and processing optimization system from the blasting to the comminution circuit and attempts in economic and energy saving opportunities. More than 45% of the energy used in a typical open-pit mine operation is spent in rock size reduction and, worldwide, comminution consumes about 3% of the world electrical energy. Distribution of energy study shows that blasting accounts for 3 – 5%, crushing for 5 – 7%, and grinding for 90% of the total energy used. Energy efficiency is less than 1% in industrial grinding processes and it was shown by a number of studies that most of the energy is dissipated as heat in the rock, equipment and water and in the surrounding atmosphere. One of the causes of this high inefficiency of the grinding mill, which is targeted in this project, is the high variability of the run-of-mine ore hardness and size distribution feeding the grinding process. This natural variability of the run-of-mine ore is amplified significantly by ore segregation in muck piles and silos where the ore is accumulated before being transferred to the grinding process. The objective of the project is to develop, assess and test an integrated tool to track and monitor the hardness and the size distribution of the run-of-mine ore feeding the autogenous or semi-autogenous grinding mills and to adjust accordingly the feed ore preparation steps (blasting, crushing and blending) and the mill operating parameters (throughput and percent solids) for energy saving and increased productivity of the autogenous or semi-autogenous grinding mills.
  Efficacité énergétique ...  
L’approche globale « de la mine à l’usine de traitement » constitue un système d’optimisation de tous les procédés d’extraction minière et de traitement du minerai, de l’abattage au circuit de comminution, qui a pour but de réaliser des économies financières et énergétiques.
The mine-to-mill holistic approach is an entire mining and processing optimization system from the blasting to the comminution circuit and attempts in economic and energy saving opportunities. More than 45% of the energy used in a typical open-pit mine operation is spent in rock size reduction and, worldwide, comminution consumes about 3% of the world electrical energy. Distribution of energy study shows that blasting accounts for 3 – 5%, crushing for 5 – 7%, and grinding for 90% of the total energy used. Energy efficiency is less than 1% in industrial grinding processes and it was shown by a number of studies that most of the energy is dissipated as heat in the rock, equipment and water and in the surrounding atmosphere. One of the causes of this high inefficiency of the grinding mill, which is targeted in this project, is the high variability of the run-of-mine ore hardness and size distribution feeding the grinding process. This natural variability of the run-of-mine ore is amplified significantly by ore segregation in muck piles and silos where the ore is accumulated before being transferred to the grinding process. The objective of the project is to develop, assess and test an integrated tool to track and monitor the hardness and the size distribution of the run-of-mine ore feeding the autogenous or semi-autogenous grinding mills and to adjust accordingly the feed ore preparation steps (blasting, crushing and blending) and the mill operating parameters (throughput and percent solids) for energy saving and increased productivity of the autogenous or semi-autogenous grinding mills.