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ANALYSIS OF THE GROUND SURFACE SUBSIDENCE IN THE JIU VALLEY COAL BASIN BY USING THE FINITE ELEMENT METHOD

Ilie Onica

First published: 2011-06-20https://doi.org/10.5593/sgem2011/s03.104View metrics

Abstract

In the case of this thick and gentle coal seam no.3 of the Jiu Valley coal basin (Romania), the mining methods are by use of the longwall mining technologies with roof control by caving or top coal caving. In this paper, it is presented the analysis of the complex deformations of ground surface, over time, as a consequence of the coal mining in certain mining fields of the basin. Also, it is analysed the ground surface subsidence phenomenon using the CESAR-LCPC finite element code. The modelling is made in the elasticity and the elasto-plasticity behaviour hypothesis for two significant cases of Livezeni and Uricani mines. The obtained results are compared with the in situ measurements data basis.

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Publication details

Title
ANALYSIS OF THE GROUND SURFACE SUBSIDENCE IN THE JIU VALLEY COAL BASIN BY USING THE FINITE ELEMENT METHOD
Authors
Ilie Onica
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2011 11th International Multidisciplinary Scientific GeoConference
Publisher
Stef92 Technology
Year
2011
Pages
Not available yet
ISSN
1314-2704
ISBN
Not available yet
Language
en
Publication type
Conference Paper
Keywords
subsidencedisplacementlongwall miningfinite element methodprofile function
References5

  1. Oncioiu,G. & Onica,I., Ground Deformation in the Case of Underground Mining of Thick and Dip Coal Seams in Jiu Valley Basin (Romania), Proceedings of 18 th International Conference on Ground Control in Mining, 3-5 August, 1999, Morgantown, WV, USA, 1999, pp.330-336.

  2. Onica,I. Introduction in the Numerical Methods Used in the Mining Excavations Stability Analysis (in Romanian), Universitas Publish. House, Petroşani, 2001, 156p.

  3. Onica,I. Environmental Mining Impact (in Romanian), Universitas Publishing House, Petroşani, 2001, pp.173-198.

  4. Onica,I. & Cozma,E. & Goldan,T. Land Degradation Under the Underground Mining Influence (in Romanian), AGIR Revue, year XI, no.3, 2006, pp.14-27.

  5. Ortelecan,M. The Study of Ground Surface Displacement Under the Underground Mining of Jiu Valley Coal Deposits – East ern Zone (in Romanian), Ph.D.Thesis, University of Petroşani, 1997, 195p.

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