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Effect of rolling resistance and road grade to mining eguipment in surface mining

  • (PDF) The Effect of Rolling Resistance on Fuel

    The Effect of Rolling Resistance on Fuel Consumption and Greenhouse Gas Emissions by Haul Trucks in Surface Mines ... are examples of the diesel equipment used in mining ... The influence of road

  • Equipment Selection for Surface Mining: A Review

    Rolling resistance varies sig-ni cantly across the road and over time, and is notoriously di cult to estimate (Dunston et al., 2007). Watering and compressing the roads regularly can control and reduce the e ects of rolling resistance. Haul grade, which is the incline of the haul road, can exacerbate the e ects of rolling resistance and rimpull

  • Rolling Resistance in Haul Truck ... - Transforming Mining

    of tyre degradation and is influenced by the rolling resistance experienced by the tyre. This accrual of heat can potentially lead to tyre failure, a costly and potentially dangerous event. Rolling resistance is influenced by a number of parameters, all of which can be placed into one of four groups of road, tyre, system and weather

  • Road surface influence on rolling resistance

    The influence of road surface properties, such as macrotexture and unevenness, on rolling resistance and fuel consumption is an important factor to consider when deter-mining the coating of a road surface. The relative smallness of this influence makes measurements of it a challenging task. In literature a wide range of results can be found

  • Appendix #4: Rolling Resistance – Precision Mining Support

    An example of the effect of rolling resistance is the generation of heat and sound as by-products. The table below (Carvill, 1989) shows example rolling resistances for pneumatic tyres on various road surfaces. Spry provides a default value of 0.03 to new segment codes as a working average

  • (PDF) Equipment Selection for Surface Mining

    Also, the softness of the road soil creates an effect of rolling resistance (against the truck tires) that reduces the efficiency of the truck in propelling itself forward. Rolling resistance varies sig- nificantly across the road and over time, and is notoriously difficult to

  • Design of Surface Mine Haulage Roads - A Manual

    cases, rear, bottom, and side dump trucks, by virtue of their function within the mining operation, are the most frequent haulage road users. Due to their extreme weight and normally high operating speeds in relation to other equipment, their ability to decelerate by braking is lowest of the constant haulage road users

  • Loading and Haulage Equipment Selection for Optimum

    calculation of truck cycle times. The rimpull curves delineate the increase in road resistance as the truck increases speed [4]. Also, the softness of the road soil creates an effect of rolling resistance (against the truck tyres) that reduces the efficiency of the truck in propelling itself forward. Rolling resistance varies significantly

  • (PDF) Rolling Resistance in Haul Truck Operations

    in surface mining. T yre’s remain a large cost in the operation of haul trucks, and are affected by rolling resistance in a number of ways. The build-up of heat in truc k tyres is a leading cause

  • [PDF] Road surface influence on rolling resistance

    The influence of road surface properties, such as macrotexture and unevenness, on rolling resistance and fuel consumption is an important factor to consider when deter mining the coating of a road surface. Results of a VTI study show that the effect of unevenness is in general significantly smaller than that of macrotexture.The relative smallness of this influence makes

  • Elsevier Editorial System(tm) for Tribology International

    dependent on many mine factors including the grade of the haul road, the rolling resistance, payload, speed and truck engine characteristics [11]. By reducing the resistance a truck

  • Kajian Pengaruh Grade Resistance dan Rolling Resistance

    Engineering types of roads is done by changing the type of road into the road with pavement soil and rock are well maintained (rolling resistace 2%), so that production increased by 11.32%. Engineering slope of the road is done at segment 10 into 6,69 o (11,73%) at first slope is 7,69 o (13,55%), so that production increased by 0,13%. PT

  • Caterpillar Haul Road Design and Management

    In both surface and underground mining, poorly designed and maintained haul roads can ... Rolling Resistance Grade Resistance Vehicle Weight Vertical Rise Slope Speed Distance Time. 26 ... rolling resistance • Minimize haul road rolling resistance wherever possible • Maintain payloads within the Cat 10-10-20 Overload guidelines

  • Viewpoint Mining Magazine - 9 ways to ensure haul roads

    Ensure proper grade. The ideal grade is between 8 and 10 percent with low rolling resistance of 2 percent or less. Watch bench and dump areas. In the load zone, ensure the floor is smooth, debris is cleared away so trucks don’t drive over rocks, and that trucks are able to leave under full, continuous acceleration

  • Rolling Resistance - Engineering ToolBox

    The force that resists the motion of a body rolling on a surface is called the rolling resistance or the rolling friction.. The rolling resistance can be expressed by the generic equation. F r = c W (1). where . F r = rolling resistance or rolling friction (N, lb f). c = rolling resistance coefficient - dimensionless (coefficient of rolling friction - CRF)

  • (PDF) 23 Equipment Selection for Mining: with Case

    23 Equipment Selection for Mining: with Case Studies. J. Salcedo Cuenca. Download Download PDF. Full PDF Package Download Full PDF Package. This Paper. A short summary of this paper. 32 Full PDFs related to this paper. Read Paper. Download Download PDF. Download Full PDF Package

  • Federation University Australia ENMIN 5018 Surface

    ENMIN 5018 Surface Mining Operations and Equipment . ASSIGNMENT 1 ... If rolling resistance is 3% and the grade resistance is 8%, what is the total resistance ... 43. For the situation in question 42, determine the cycle time if road conditions were improved to a rolling resistance of 20 kg/tonne. 44. For the problem in question 42 and 43 the

  • Optimization of loading and hauling operations in surface

    A reduction in the unit cost of loading and hauling has been achieved, on one hand, by applying new and innovative mining equipment and methods, and on the other hand, by optimizing the use of old as well as new equipment. This paper presents two examples. The first is derived from an oil sands operation where a bucket wheel excavator loads

  • Analysis of Factors, Which Influence the Cycle Time of

    The maximum potential speed for efficient plying of a dumper depends upon haul road grade and rolling resistance. The minimum force required to overcoming the retarding force acting between the tires of the dumper and the surface of the road, is the rolling resistance. The grade of haul road can be determined by equation-2

  • Haulage #1: Haulage Theory & Setup – Precision Mining

    Road Surface: Rolling Resistance: New Asphalt/Concrete: 0.01 (1%) Worn Asphalt/Concrete: 0.02 (2%) Rolled New Gravel ... on a uphill ramp of 8% grade and a rolling resistance of 2%, the effective grade will be 10% and the static force on the truck will be 376 x 0.1 = 37.6tf (or 37,600 kgf). ... and small changes generally do not effect results

  • Haul Road Design & Maintenance: Improving Tire & Mining

    Haul roads—and mine haul road design and maintenance has a direct effect on productivity and profitability. Haul road conditions dictate speed, fuel burn, tire life, safety and annual tonnage moved. Clean, smooth surfaces extend tire life for mine haul trucks and reduce the chance of machine damage or accidents due to road hazards

  • Manual: Mine Haul Road Design - Heavy Equipment

    Mar 23, 2017 Pages: 116. Size: 1.01 MB. Format: PDF (Adobe Reader) Content: Manual for Mine Haul Road Design – Guidelines – Survey of Haul Trucks & Roads for Surface Mines, Haul Road Planning and Alignment, Design of Haul Road Cross-section, Road Surface, Road Construction Materials, Haul Road Economics, Appendices, Haul Trucks and Tires, Bearing

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