Abstract
The article describes a problem of hydraulic backhoes usage in coal-bearing areas development in complex structured deposits. At present time there is a mass replacement of previously widely used shovels with more adaptive excavation equipment—hydraulic backhoes in open pits of Kuzbass (the largest Russian coal basin, Western Siberia). On the one hand, it opens up new opportunities for reducing of coal losses and better planning of mining operations in coal-bearing area during the development of rock-and-coal blocks. On the other hand, backhoes usage with the replacement of railway transport for trucks significantly complicates rock-and-coal face parameters determination. It also impose new requirements for dispatching the “excavator—transport unit” work chain. In addition, strict requirements to excavator’s maneuverability for rock-and-coal blocks processing actualize research of safe backhoe positioning on a bench. The article describes the results of technological parameters determination for hydraulic backhoes usage in coal-bearing areas development in complex structured deposits. The most important results are the recommendations for choosing the order of heterogeneous (rock and coal) layers processing and justification of excavation blocks parameters for their layer-by-layer extraction that minimizes the coal losses. Particular attention is paid to the definition of excavated layer parameters depending on bucket capacity and excavated substance. Based on these data, the dependence of hydraulic backhoe productivity on the excavated layer height was defined. The study results are presented in the article on the example of Kuzbass coal deposits being developed by several open pit mines.
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Tyulenev, M.A., Zhironkin, S.A., Litvin, O.I. et al. Safe and Productive Application of Hydraulic Backhoes in Coal-Bearing Areas of Complex Structured Deposits. Geotech Geol Eng 35, 2065–2077 (2017). https://doi.org/10.1007/s10706-017-0228-6
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DOI: https://doi.org/10.1007/s10706-017-0228-6