FEM Simulation of the Effects of Mining on the Strength of a Structure

Abstract:

Influence on the environment has caused and still causes today the destruction of terrain and buildings. It further analyzes the main forms of land and the effects of surface destruction. The state of tension and deformations of the massif is affected by underground mining. On the 23^rd of February of 2008, in Saarland, a vibration of 93.54 mm/s, which corresponds to a value of 4.0 on the Richter scale, was measured. Numerous resistance structures have suffered as a result of strong subsidence damage. Size and expansion of compact according to the characteristics of the mine is studied. Less well known are the effects of mining compaction on the behavior of a resistance structure. This study attempts to answer this question. The research method is the numerical simulation using the finite element method combined with in situ measurements of damage. Framework was charged as the usual load of a building norm. The corner to a 300 mm compacted statically indeterminate structure produces additional stresses and strains. Research results are comparisons between load cases with and without compaction and the calculated mechanical stress with rupture stress. As a result of the rupture is measured experimentally effective crack opening.

• Periodical: Applied Mechanics and Materials (Volumes 809-810)
• Pages: 884-889
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.809-810.884
• Online since: November 2015
• Authors: Lothar Becker-Daugherty*
• Keywords: Destruction, Displacement, FEM-Numerical Simulation, Mining, Mining-Related Shocks, Strength of a Structure

References

[1] L. Becker Daugherty, Aspects of seismic hazards caused by the Mining, International Journal of Engineering and Innovative Technology. 4, issue 4 (2014) 33-36.

[2] L. Becker Daugherty, Aspect of seismic hazard caused by the mining and its sequelae, Engineering Solutions and Technologies in Manufacturing, Applied Mechanics and Materials. 657 (2014) 664-668.

DOI: 10.4028/www.scientific.net/amm.657.664

[3] P.A. Mikula, Prediction of Mine Subsidence In Eastern Australia By Mathematical Modelling 5th ISRM Congress, 10-15 April 1983, Melbourne, Australia.

[4] Drisch-Schürken, Review of mining subsidence and subsidence damage to buildings (in German), Theodor Oppermann Publisher, Hanover, (1995).

[5] P. Lorenz, V. Poterasu, N. Mihalache, The finite element method and the boundary element (in German), Vieweg Teubner Publisher, (1995).

[6] DIN e. v. DIN EN 1992-1-1 (in German), Beuth Publisher, Berlin, (1992).

[7] S. Moothy, S. Ghosh, Particle cracking in discretely reinforced materials with the Voronoi cell finite element model, International Journal of Plasticity. 14, issue 8 (1998) 805-827.

DOI: 10.1016/s0749-6419(98)00024-2