ǂThe ǂdevelopment of dewatering predictions of the Velenje coalmine

Željko Vukelič (Author), Evgen Dervarič (Author), Jurij Šporin (Author), Goran Vižintin (Author)

Abstract

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.

Keywords

colliery;coal mine;excavation;pumping;;dewatering;predicted dewatering;groundwater;aquifer;Velenje coal mine;

Data

Language:	English
Year of publishing:	2016
Typology:	1.01 - Original Scientific Article
Organization:	UL NTF - Faculty of Natural Sciences and Engineering
UDC:	622
COBISS:	1622367
ISSN:	1996-1073
Views:	226
Downloads:	61
Average score:	0 (0 votes)
Metadata:

Other data

Type (COBISS):	Article
Pages:	9 str.
Volume:	ǂVol. ǂ9
Issue:	ǂno.ǂ9
Chronology:	2016
DOI:	10.3390/en9090702
ID:	13582418