Haul road rolling resistance and pavement condition

Coffey, Jarrad; Nikraz, Hamid; Leek, Colin

doi:10.1080/14488353.2018.1443376

Cited by 2 publications

(4 citation statements)

References 2 publications

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“…As such, the pavement depth was manually adjusted in successive iterations until the target sub-grade compressive strain was achieved. The inputted vehicle wheel loads were as stated in the Komatsu 830E-AC specification (Komatsu, 2006), with tyre/pavement contact areas estimated based on the results of measurements of this property in Coffey et al (2018). The pavement configuration adopted in HIPAVE is presented in Figure 4, with the various material properties presented in Table 1.…”

Section: Methodsmentioning

confidence: 99%

“…where N is the Weinert N-value; Ej is the evaporation in the warmest month (millimetres); and Pa is the annual precipitation Maintenance blading in both models is considered to return the pavement to a minimum theoretical roughness, which is represented by RG α in Equation (2) and RDSMIN in Equation ( 7). The minimum roughness is assumed to be 4.6 m/km in both models, based on advice in Paige-Green (1990), Paterson (1991), Archondo-Callao (1999), Tan et al (2011), Hore-Lacy et al ( 2015) and the results of measured haul road IRI in Coffey et al (2018). This assumption is necessary as the equations that calculate minimum roughness in the TRH-20 model need to be calibrated against test data, which is not available for this investigation.…”

Section: Methodsmentioning

confidence: 99%

“…Pavement roughness is typically the only pavement parameter that is considered in assessing the rolling resistance experienced by a haul truck (Department of Energy, Resources and Tourism, 2010; Thomson 2015). However, Coffey et al (2018) show that the rolling resistance of rigid haul trucks may be equally attributable to pavement deflection and roughness. Therefore, it appears possible that the structural design in conjunction with the functional design and maintenance could be based upon achieving the desired balance of capital and operating costs.…”

Section: Introductionmentioning

confidence: 99%

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Energy consumption in mine haulage due to road pavement performance

2019

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Mine haul road pavements are often designed with informal methods. This approach means the energy consumption in haulage is not quantified and so pavement operating costs are not able to be defined. The energy consumption of haul trucks operating on unbound and cementitiously modified haul road pavement basecourse and wearing courses were estimated with variable traffic, climate and maintenance inputs. Energy consumption estimates showed that significant benefits may arise through the use of superior gravels that contain a suitable fines content with low to medium plasticity in the pavement wearing course. Similarly, it was shown that the pavement structural class significantly impacts haul truck energy consumption. Structural class is determined by pavement design and may be improved by increasing the pavement depth or utilizing stiffer materials. Estimating the energy consumption of haul trucks as part of the pavement design process would allow optimization of capital and operating costs over the life of a haul road.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energy consumption in mine haulage due to road pavement performance

2019

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“…The impact of haul roads has also been described by Douglas, R. A., and Lawrence, K. [18], Richardson, S., and McIver, J. [19] as well as Coffey, J., Nikraz, H., and Leek, C. [20,21]; Li, X., et al [22]; and Hasan, H., and Octariando, R. [23]. The use of machine effectiveness evaluation metrics described by Antosz, K., and Stadnicka, D. [24].…”

Section: Introductionmentioning

confidence: 90%

The Influence of the Mining Operation Environment on the Energy Consumption and Technical Availability of Truck Haulage Operations in Surface Mines

Bodziony,

Patyk

2024

Energies

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This paper presents an analysis of the impact of selected parameters of the operating environment on the energy consumption and reliability of haulage in surface mining. The analysis is based on a cyclic haulage system in a limestone open pit. The results of the calculations show that maintaining the operating environment in good technical condition has a positive effect on the haulage process and a direct or indirect effect on the operating costs, the analysis of which is also presented in the main body of the article. The analysis was carried out for a full year’s production, taking into account actual operating and maintenance downtime. The results of similar analyses can be used as a basis for deciding on the type of truck to be used for transport or for reconfiguring transport routes. In addition to the economic and operational aspects of energy consumption and reliability, the environmental aspect cannot be overlooked. The comparison of two variants of mining conditions shows that a modification of the haul road surface leads to a significant reduction in fuel consumption. Depending on the type of vehicle, fuel consumption can be reduced by almost 20%. The potential reduction in fuel consumption directly translates into lower exhaust emissions, which is an important element of an environmentally sustainable approach to mining transport, and greater reliability increases efficiency and reduces the carbon footprint of the vehicle.

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Haul road rolling resistance and pavement condition

Cited by 2 publications

References 2 publications

Energy consumption in mine haulage due to road pavement performance

Energy consumption in mine haulage due to road pavement performance

The Influence of the Mining Operation Environment on the Energy Consumption and Technical Availability of Truck Haulage Operations in Surface Mines

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