Revision of coal reserves and placement of exploitation fields in exploitation of the lignite deposit in Premogovnik Velenje

摘要

Coal (brown coal and lignite) is the only fossil fuel available in Slovenia, representing approximately 21 % of primary energy consumption. Due to environmental reasons, the use of coal is directed only to thermal energy generating facilities with appropriate flue gas cleaning technologies. Premogovnik Velenje (PV) is a modern equipped and highly productive coal mine providing lignite exclusively to Termoelektrarna Sostanj for its production of electricity and thermal energy. PV exploits a deposit of exceptional dimensions in which they developed their own, highly productive exploitation method with underground production and can compete, in productivity and coal prices, with the world's best underground coal mines. The quantities of domestic production of coal cover 78.0 % of all planned demands for solid fuels. In the Saleska dolina valley, the balance sheet reserves of coal in coal deposit in PV amount to 171 million tonne on 31st December 2008 and 131,67 million tonne of exploitation reserves with average calorific value of 10.47 GJ/t. Projections for further production of coal are related to long-term operation of the Sostanj Thermal Power Plant (TES) which will invest in the 600 MW generator unit 6. PV is the only supplier of coal for TES. Until the year 2021, the level of production of coal will amount to 4 million tonne per year. In the period until the year 2040, it will gradually decrease to the level of 2 million tonne per year and will remain at this level until the end of exploitation of the Velenje exploitation field in the year 2053.