Abstract
Suspended monorails are a common mode of transportation for materials and personnel in underground mines. The goal of the EU-funded project “Innovative High Efficiency Power System for Machines and Devices, Increasing the Level of Work Safety in Underground Mining Excavations (HEETII)” is to introduce a single-wire energy transmission system combined with a capacitive-coupling-based wireless transmission system to power the suspended tractor, along with a monitoring system that will monitor the energy network and additional environmental parameters of the mine. Additionally, the monitoring system acts as the wireless communication backbone, allowing for data transmission to surface headquarters, where the data are processed and logged in a central database. This enables operators to detect and take preemptive measures to prevent potential hazards in the mine, improving the overall efficiency of the energy transmission system. This paper describes the additional considerations required for electrical systems in underground mines with potentially explosive atmospheres, as well as the design of the energy transmission system and the monitoring system.
Highlights
Published: 13 January 2022Transport of materials and personnel is a critical task in mine operations [1]
Figure an important partthe of overall the overall system is the subsystem pended tractor, the energy transmitter module of the system (WET3), and the sensor lated to communication and monitoring of environmental parameters along the suspended related to communication and monitoring of environmental parameters along the susroute
To the need to run power cables to these sensor and access point modules, they were tem; eliminate the capacitive coupling ispower achieved using a pair of fixed plates point placedmodules, on the susthe need to run cables to these sensor and access equipped with the wireless system (WET) wireless power system
Summary
Transport of materials and personnel is a critical task in mine operations [1]. A common solution—especially in coal mines in some parts of the world—is a suspended monorail system, since it is independent of the quality of the roadway floor [2]. Operating the monorails using diesel drive systems has major disadvantages, since the engines emit gases, heat, and noise, and require a fuel transport network with special safety requirements [3]. Recharging the batteries in underground mining conditions—especially in potentially explosive atmospheres—requires specially designed solutions. Efficiency Power System for Machines and Devices, Increasing the Level of Work Safety in Underground Mining Excavations (HEET II)” project, supported by the Research Fund for Coal and Steel (RFCS)—developed by partners from Poland, Romania, and Germany—. A capacitive-coupling-based wireless energy transmission system to recharge the batteries of the suspended tractor;. A redesign of the suspended beam using composite materials; Amonitoring and control system for the energy transmission network and environmental parameters in the underground mine.
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