Overall equipment effectiveness can be used as a tool to measure the performance and utilization of shovel-dumper operation in opencast mines. Authors of the paper have discussed on the cycle time of shovel and dumper, their dispatching and allocation problem and proper combination in opencast mining operation to optimize the …
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The aspect of the mining operation, which has the most influence on profit, is the cost of materials handling. This paper focusses on developing an oriented algorithm that can be used during the calculation of shovel productivity as well as fleet production …
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The need to optimize surface mining operations has led to the use of discrete event simulation (DES) modeling of truck-shovel systems. Often, these models assume truck cycle times are independent and identically distributed (iid) random variables, although, with significant bunching on the haul routes, this may not be valid.
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S.K. Chaulya, G.M. Prasad, in Sensing and Monitoring Technologies for Mines and Hazardous Areas, 2016 Abstract. Opencast mining operations involve huge quantities of overburden removal, dumping and backfilling in excavated areas. A substantial increase in the rate of accumulation of waste dumps in recent years has resulted in greater height of …
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3. Productivity: The actual production per unit time when all the efficiency and other management factors are considered. It can also be referred to as a net production rate, or production per unit of labour and time (e.g., tons/employee-shift). 4. Efficiency: The percentage of estimated production rate that is actually handled by a machine.
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The main output parameters in a mining haulage system are system production, shovel utilisation, trucks utilisation, time trucks spend in the queue and …
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shovel and truck operations and introduces procedure to record time losses. The procedure to estimate OEE of shovels and trucks has also been presented via numerical example. Key words: OEE, Equipment Utilization, Mining, Time Losses Introduction All industries are dependent on their assets as well as mining companies. The increase in automation,
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In a surface coal mine, efficient usage of shovels and dumpers should be most reliable and available to reach their production target. Keeping this in mind, this study was carried …
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The open pit mining load and haul system has been a mainstay of the mining industry for many years. While machines have increased in size and scale and automation has become an important development, there have been few innovations to the actual load and haul process itself in recent times. This research highlights some of the potential …
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This algorithm is based on a simulation model of a shovel-Truck system. The proposed approach is applicable in terms of the group of shovels with a common dump point in various open-pit coal mines ...
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stochastic simulation is an effective tool for optimising the utilisation of fossil-based fuels in mining and related industries. Keywords: Stochastic, Simulation Modelling, Mining, Optimisation, Shovel-Truck Material Handling 1 Introduction The decline in gold price together with escalating cost of production has necessitated a more effective
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This is called a dump operation. It is a independent machine unlike a shovel. A 30 cum Dragline can handle 40 Lakh cum of OB per annum. The dragline works on the immediate OB bench above coal and the benches from the surface to the Dragline are normally handled by Shovel & Dumper combination.
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shovel and dump truck utilization, the volume of the excavated and transported rock mass is shown for each type of shovels using at the Erdenet open-pit mine (Figure 1). Fig. 1. …
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A 12 yd shovel has a dipper capacity of 12 yd 3. Typically, shovels are in the range of 10 – 90 yd. The digging height of the shovel is determined the size of the boom. Shovels are mounted on large crawler tracks, to facilitate movement into the bank, known as propelling; as well as to allow the shovel to move to the working faces or banks.
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The shovel loading time per dumper is 5 min. and dumper cycle time is 20 min.. Calculate the match factor. Assignment • Calculate the productivity of a 10 m3 shovel with 85 tonne dumper having struck capacity of 37 m3. Also calculate the no. of shovel and dumpers required to handle 10 million m3 of overburden material.
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Contribute to jidafang2022/en development by creating an account on GitHub.
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mining is the Shovel-Truck system (ST) [9,12]. This comprises of a shovel loading blasted material into a truck, which transports the material from the dig face to a destination (stockpile, dump, or primary crusher) where it is unloaded. The truck then returns to the shovel and the cycle repeats, as shown in Figure1.
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The 100 mm coarse blade is mixed, spread & compacted at a productivity of 47.6 m3 / hour. The 100 mm coarse plant is mixed, spread & compacted at a productivity of 35.7 m3 / hour. 4. TRUCKS (Dumper Truck) Trucks are an extremely important part of the earth-moving and material-moving process.
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contributing about 62%. The truck bunching accounted for a monthly production loss of 101 000 tonnes, which is equivalent to 1.3%. The production loss through material spillage during haulage was about 618 tonnes of ore and waste, over one month period, which was very low. The best parings of shovels matching to trucks were also recommended.
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Authors of the paper have discussed on the cycle time of shovel and dumper, their dispatching and allocation problem and proper combination in opencast mining …
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The cycle time for an electric shovel differs slightly from a hydraulic excavator. For an electric shovel with a 70º swing radius, the cycle time averages 33.8 seconds, according to Koellner. The electric shovel requires 11 seconds to fill the bucket. The swing time accounts for 11.5 seconds. The dump time is 3 seconds.
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Next generation Hydraulic Mining Shovels will deliver significant benefits in terms of operator comfort and safety, productivity and efficiency, maintenance and support, technology and connectivity. But the one thing these updates all have in common is the philosophy behind their design: a focus on increasing the value they deliver to the ...
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The ratio of coal production for the conventional shovel dumper system and surface miner- pay loader - tipper system is near about 1:11. ... • This calls for review of deployment methodology of the shovels accounting for geo-mining profile and work conditions since there are many factors that, directly or indirectly impact mining system ...
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of Surface Mining Equipment with Particular Reference to Shovel-Dumper Mining submitted by Shailesh Kumar Sone, Roll Number 214MN1451, ... early return of their investment as well as reducing total production cost. In present situation to achieve high production and productivity of HEMMs in opencast mines, it is desired to have high ...
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This study emphasizes shovel operation only in the opencast coal mines, where the cycle time of dumper operation is known. The productivity and efficiency of a shovel are affected by several ...
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The production operation in open-pit mining involves a series of activities from the loading, travelling loaded, manoeuvring at the dump, dumping and travelling back to the loader (Fisonga and ...
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The excavator actual productivity refers to the maximum possible productivity in real construction site conditions. The SRF includes the use of a video camera and the analysis of recorded videos ...
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The shovels were equipped with a 17.9 yd 3 (13.7 m ) bucket on the 6020B and a standard 10.6 yd 3 (8.1 m ) bucket on the 6015B. The competitive machines were outfitted with buckets as close in size as available – around 10.0 yd 3 (7.6 m ) on the and PC1250-8, and 17.8 yd (13.6 m3) on the PC2000-8. "We …
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— Today's mining industry demand large-capacity shovels and dumpers for mega production and low-cost operations. While increased mechanization and automation make considerable contribution to mine productivity, unexpected equipment failure prohibit the maximum possible utilization of sophisticated mining equipment and require significant …
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Shovel-truck productivity is determined by two methods: By the cycle time analysis By computer simulation The mathematical expression of productivity is given by (Runge Mining (Australia) Pty Ltd, 1993) Productivity = There are various factors which influencing the shovel-truck productivity, the major factorsare shown in the figure 2.
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This study presents the effect of excavator model, loading operation location, shift availability and truck-shovel combination on loading cycle time and productivity of an open-pit mine. The loading cycle time was used to assess the material loading system performance which is one of the key components of the total cycle time for material transportation in an open …
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dump the load, travel back ... In open-pit mining, fleet productivity and the required fleet's size are directly related to the tonnage of moved material and the time and distance it takes for ...
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The cycle time of dumpers is one of the basic parameters, which influences productivity and performance of open cast coal mines. Length of haul roads and its …
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This paper addresses various optimization models available for productivity analysis of shovel-dumper fleet. Match factor method is one of the commonly used techniques to know the relative ...
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The probable hourly production of shovel family can calculated using the following formula. Generally the output of the face shovel can be estimated by the following formula. Hourly production (m3/hr) = q x (3600/C) x Efficiency Where: q = production in m3 per cycle = Heaped capacity x Swell factor x Bucket factor. Table 2.2
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This study emphasizes shovel operation only in the opencast coal mines, where the cycle time of dumper operation is known. The productivity and efficiency of a shovel are affected by several ...
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