Abstract
In this paper, we discuss an issue of underwater mining and why modern mining equipment does not fit this purpose. Working in such complicated conditions often has an unsatisfying performance level. We analyzed the processes of mining materials that have not been preliminary dewatered. We also describe variations of positioning system and the importance of their use in underwater mining. A theoretical analysis of excavation process with a perforated bucket has been performed. We present a formula that allows assessing extent of bucket loading by parameters of the working face development. Another formula that allows determining the number of excavation cycles required to complete the bucket loading. A formula for parametric length of working face arc determining by the given stratum depth was introduced. Basing on the acquired formulae, we formulated another one that determines the number of excavation cycles necessary for complete face development for specified cutting parameters. An aggregated graph showing the dependency of the number of excavation cycles on peat shavings width and thickness variables. On the basis of the resulting graph, the best variant for the most complete bucket loading was chosen. In conclusion, we highlighted the peculiarities of underwater mining.
Highlights
After minerals are mined from an inundated working face, they require dehydration which significantly increases costs of production
Modern excavation tools are capable of performing multiple tasks, new requirements set by the developments in the mining industry stress the necessity of designing brand new equipment or new iterations of the currently existing machines and tools suitable, for example, for mining peat materials in inundated natural peat deposits
We suggest taking a closer look at the process of excavator bucket loading during underwater mining
Summary
After minerals are mined from an inundated working face, they require dehydration which significantly increases costs of production. This is especially relevant for raw peat materials. Most part of peat materials is flushed out from a bucket and the working face itself cannot be visually monitored. Excavated peat mass has a structure of various disruption extents and a water level of 90-92%. In the course of the peat winning process, a significant amount of water is excavated that requires further elimination. The issue of disrupted peat material with a high level of water contents must be resolved step by step [7]
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