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Flooded mine workings have good potential as low-enthalpy geothermal resources, which could be used for heating and cooling purposes, thus making use of the mines long after mining activity itself… (More)
The appearance of methane during the excavation of tunnels through Carboniferous strata has always been a significantly frequent event. The occurrence of methane in tunnels poses a twofold problem.… (More)
In this work, the concept ‘city water heating’ is introduced. It consists in bringing a significant amount of residual thermal energy (waste heat) from a power plant to a city by means of heating the… (More)
Abstract In 2017, renewable energy accounted for 19.5% of the total energy used for heating and cooling in the European Union. This paper analyses the technical and economic feasibility of using mine… (More)
Abstract The convergence-confinement method (CCM) applies for cylindrical tunnels driven through a rock-mass that is assumed to be subject initially to a hydrostatic stress field. A basic component… (More)