The development of dewatering predictions of the Velenje coalmine

Vukelić, Željko (author), Dervarič, Evgen (author), Šporin, Jurij (author), Vižintin, Goran (author)

The complex hydro-geological situation, particularly in terms of groundwater, has been a constant threat to the mining carried out at the Velenje colliery since its inception. Of particular interest to the authors are the difficulties presented to the colliery by the adjacent sand aquifers, as the water pressure within these sands directly impacts mining safety, and the aquifers themselves are most directly affected by dewatering. In order to monitor water levels and estimate dewatering at the Velenje wells, multi-layered modelling using 3D Finite Difference Method (FDM) has already been carried out. However, FDM is not optimal due to its greater dependence on cell size than on water flow. In 2017 in Velenje, a series of wells will be terminated as a result of mining and mining-induced subsidence, leading to dewatering and danger of flooding. As part of a plan to address this by replacing dewatering structures, a series of drive-in filters will be implemented around the entry and exit point tunnels of a longwall face. Because FDM seems to be inadequate for purposes of optimising this process, the Finite Elements Method (FEM) was applied in this case. Based on such an application of FEM, a prediction of the optimisation of drive-in filters was carried out by the authors.

• Language: English
• Keywords: colliery, coal mine, excavation, pumping, dewatering, predicted dewatering, groundwater, aquifer, Velenje coal mine
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: NTF - Faculty of Natural Sciences and Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2016
• Number of pages: 9 str.
• Numbering: Vol. 9, iss. 9, art. 702
• PID: 20.500.12556/RUL-131544
• UDC: 622
• ISSN on article: 1996-1073
• DOI: 10.3390/en9090702
• COBISS.SI-ID: 1622367
• Publication date in RUL: 29.09.2021

Record is a part of a journal

• Title: Energies
• Shortened title: Energies
• Publisher: Molecular Diversity Preservation International
• ISSN: 1996-1073
• COBISS.SI-ID: 518046745

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 01.09.2016

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: L1-5451
• Name: Ocena možnosti geološkega zajemanja CO2 v nizko zrelih premogih: Velenjski bazen, Slovenija kot naravni analog

• Funder: Other - Other funder or multiple funders
• Funding programme: Velenje coalmine