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Abstract
Dump trucks are used for transportation in opencast mines and consume about 32% of the total energy use in mines. This paper presents a generic model to benchmark energy consumption for dump trucks in mines. The modelling framework estimates minimum specific fuel consumption (SFC) of dump trucks using mine equipment, engine characteristics and vehicle dynamics. The model investigates the variation of SFC with operating input parameters like payload, material handling rate, vehicle speed, distance, mine gradient, etc. The applicability of the proposed model is illustrated through a case study of multiple dump trucks in a down gradient opencast limestone mine in India. The minimum SFC of 89g/t is estimated for a mine transport system with three excavators and two crushers. The case study shows a potential fuel saving of 17%. The modelling framework developed can be used to set rational targets for energy consumption for dump trucks in mines.
Highlights
Motor transport, in particular, industrial transport of enterprise - the constituent of a transport system of Ukraine is important
The for today operating events of increase of the productivity at transportation of metallurgical slags and products of their processing operating of tippers conditions cannot recreate in the conditions of quarry of metallurgical enterprise
Its use implies a short distance of transportation (3...4 km, and most appropriate for 1.2...1.5 km); in the process of work there is a high level of pollination and pollution of the atmosphere by harmful emissions of exhaust gases due to the high intensity of traffic and limited size of the career; there is a low level of staff productivity due to the need to maintain a state of drivers; at the same time, we note the relatively high energy consumption of cars and significant operating costs
Summary
In particular, industrial transport of enterprise - the constituent of a transport system of Ukraine is important. A significant disadvantage of road transport is its dependence on climatic conditions and the state of highways, which inevitably leads to a decrease in traffic volumes during the periods of rains, snowfalls and ice. In addition, its use implies a short distance of transportation (3...4 km, and most appropriate for 1.2...1.5 km); in the process of work there is a high level of pollination and pollution of the atmosphere by harmful emissions (up to 200 tons per year) of exhaust gases due to the high intensity of traffic and limited size of the career; there is a low level of staff productivity due to the need to maintain a state of drivers; at the same time, we note the relatively high energy consumption of cars and significant operating costs. The prospect of its use in deep quarries may be realistic due to combined transport schemes within the CPT, by improving the routes of vehicles in the quarry, developing automated control systems for dump trucks, along with excavation excavators [9]
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