1991. 24. Roadheader performance and related parameters are reviewed and their effects on the production and advance rate are discussed. Among the parameters influencing the machine performance, the most important one is the cutterhead design which could be optimized for a specific application. The procedures and the approach used in design
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DOI: 10.1016/j.ijrmms.2020.104360 Corpus ID: 225329258 Experimental investigations on thermal behavior during pick-rock interaction and optimization of operating parameters of surface miner @article{Kumar2020ExperimentalIO, title={Experimental investigations
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:Amar Prakash, Vemavarapu Mallika Sita Ramachandra Murthy, Kalendra Bahadur SinghSurface Miners: Evaluation of the Production Rate and Cutting Performance Based on Rock Properties and Specific Energy the Cerchar abrasiveness index CAI value. Int J Rock Mech Min Sci 40: 259–263 Pradhan P, Dey K (2009) Rock cutting with surface
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· Ability of surface miner to operate and cut effectively in rock is limited to strength property of rock. Origliasso, C., Cardu, M., and Kecojevic, V. (2013): Surface Miners: Evaluation of the Production Rate and Cutting Performance Based on Rock Properties and
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· Rock excavation is carried out either by drilling and blasting or using rock-cutting machines like rippers, bucket wheel excavators, surface miners, road headers etc. Economics of mechanised rock excavation by rock-cutting machines largely depends on the achieved production rates. Thus, assessment of the performance (productivity) is
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ORIGINAL PAPER Surface Miners: Evaluation of the Production Rate and Cutting Performance Based on Rock Properties and Specific Energy Chiara Origliasso • Marilena Cardu • Vladislav Kecojevic
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· In India, demand for coal exceeds its countrywide supply, despite its natural abundance, due to failure to achieve high production targets, especially in opencast mines, which are responsible for 94.98% of total raw coal production within the country. Employment of technological solutions, such as surface miners, is key to achieving
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The Wirtgen 260 SX (i) Cross Application Miner. 100 Percent Mining – Environmentally Friendly, Efficient, and Safe Extraction of Primary Resources in a Single Operation. World Premiere of the 280 SM (i) Surface Miner. Wirtgen 220 SMi 3.8 Surface Miner – High-Performance Chalk Mining in France. 220 SMi 3.8 in France.
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· Semantic Scholar extracted view of "A new rock cuttability index for predicting key performance indicators of surface miners" by A. Prakash et al. DOI: 10.1016/J.IJRMMS.2015.04.016 Corpus ID: 107994306 A new rock cuttability index for predicting key performance
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:Chiara Origliasso, Marilena Cardu, Vladislav KecojevicPublish Year:2014Surface Miners: Evaluation of the Production Rate and Cutting Performance Based on Rock Properties and Specific Energy. In: ROCK MECHANICS. AND ROCK
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Flow sheet for selection of surface miner based on cuttability index. machine configuration has to give. Step 2: Check the UCS and abrasivity of rock than calculate the cuttability index. Step 3: Calculate the estimated production than check whether the production is acceptable or not.
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Wirtgen’s 220 SM 3.8/220 SMi 3.8 surface miner selectively mines raw materials up to a cutting depth of 350 mm and a uniaxial compressive strength of 35 MPa. With a cutting width of 2.2 m and a cutting depth of up to 300 mm, the 220 SM/ 220 SMi can extract raw materials up to a uniaxial compressive strength of 50 MPa.
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Download Table | Rock-mass classification parameters (Dey and Ghose 2008) from publication: Surface Miners: Evaluation of the Production Rate and Cutting Performance Based on Rock Properties and
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· Production evaluation of surface miners was done in three limestone mines and three coal mines located at various parts of India. This paper presents the influence of rock/rock mass properties
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THE INFLUENCE OF TOOL CHARACTERISTICS ON MACHINE THRUST REQUIREMENTS IS EMPHASIZED IN A DISCUSSION ON CUTTING TOOLS USED FOR BORING. AN INVESTIGATON OF THE CUTTING GEOMETRY OF MACHINES WORKING ON THE UNDERCUTTING PRINCIPLE IS DESCRIBED, FOLLOWED BY A REVIEW
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· The size of coal chips, produced during coal cutting operations, is of prime importance from the viewpoint of feed size desired by power plants. Proper chip size in cutting can eliminate primary crushing and in-turn save energy. Achieving a designated size of chip is intimately linked with the drum design inter alia the wrap angle, line spacing of
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Cutting performance is generally evaluated by various parameters such as, production, specific energy, chip size of cut material, cutting force, pick wear, pick consumption, etc. The present study describes an approach to identify critical parameters that affect the performance of surface miner (SM) based on field data collection from various project
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· Surface miner is an eco-friendly excavation machine which is gradually replacing the traditional drilling and blasting method of excavation. Hence, accurate determination of the production rate of surface miner is very imperative. This study therefore proposes machine learning based models for the prediction of production rate
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· Surface mining machine, powered by cutting-edge equipment and technology like that offered by Sandvik, has transformed the way we extract valuable resources from the Earth’s surface. This method’s efficiency, safety features, and commitment to environmental preservation make it an essential component of industries
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Turn back method A surface miner cut from one end of the area and after the completion of cut the 100 3700SM Up to 80 81 to 100 4200SM Up to 70 750–300 1550–220 220–65 2550–365 365–100 3400–475 The production rate of the surface miner can be estimated
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· The theoretical production capacity of a few surface miners, based on their respective specifications was analysed and found to range from 264 to 5865 m 3 /h for the chip size varying from 50 to
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· The target coal production of surface miner in these mines depends on their technical specifications (cutting depth × width of cutting drum × rate of linear advancement) []. However, the actual coal production and utilisation percentage of surface miner vary on a daily as well as a monthly basis in both mines.
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:Amar Prakash, Vemavarapu Mallika Sita Ramachandra Murthy, Kalendra Bahadur Singh · The purpose of this research was to evaluate the production rate (PR) and cutting performance of surface miners (SM) based on rock properties and specific energy (SE).
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: Marilena Cardu · The purpose of this research was to evaluate the production rate (PR) and cutting performance of surface miners (SM) based on rock properties and specific energy
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The purpose of this research was to evaluate the production rate (PR) and cutting performance of surface miners (SM) based on rock properties and specific energy (SE).
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· The critical parameters influencing the production, diesel consumption and pick consumption of SM in Indian coal and limestone mines, were identified through artificial neural network (ANN) technique and screened by correlation coefficient analysis. Applicability of a surface miner (SM) must be based on a careful assessment of intact
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· Surface miners are being increasingly used in opencast mines owing to their ability to excavate thin bands selectively. Even-minor variations in intact rock and rock mass parameters can adversely affect the performance of surface miner in terms of production and pick consumption. Power utilization both by rotary motion of cutting
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:Chiara Origliasso, Marilena Cardu, Vladislav KecojevicPublish Year:2014 · Examples are the Evans model (Evans 1972a, b, 1982, 1984a, b; Roxborough and Phillips 1975) for rolling tools, and the Nishimatsu model (Nishimatsu 6
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· Surface miner can cut oil-shale seams more exactly than rippers (2–7 cm) with deviations about 1 cm [10]. The production performance of a few surface miners used in Indian coal mines (Central Coalfields Limited (CCL), South Eastern Coalfields Limited (SECL), Mahanadi Coalfields Limited (MCL) and Singareni Collieries Company Limited
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An investigation carried out to identify the factors affecting performance of surface miner and computer software developed to assist the mine management in selecting the most suitable surface miner. Surface miner is proved to be an efficient rock excavation technique in surface mines. However, till date, mining industry is facing a problem in
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Trituradora de piedra vendida por proveedores certificados, como trituradoras de mandíbula/cono/impacto/móvil, etc.
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