Pytel, Witold (2003) Rock mass—mine workings interaction model for Polish copper mine conditions. International Journal of Rock Mechanics and Mining Sciences, 40 (4). pp. 497-526. DOI: https://doi.org/10.1016/S1365-1609(03)00028-5
Full text not available from this repository.Abstract
Geological and mining conditions characteristic for the Polish Legnicko–Glogowski Okreg Miedziowy (LGOM) copper mines as well as various exploitation systems utilized in that area are presented. The historical background of mining systems development as well as their classification are also reviewed. Presently, due to difficult mining conditions, a new more universal analytical tool for mine workings geometry selection is required. Therefore, a very useful in design process multi-plate analogy based physical model of rock mass—mine workings interaction has been developed and presented in the paper. The model utilizes the analytical approximation of pillar compression including the effect of pillar critical and residual strength on roof strata deflection resulting in the definite bump hazard level. The research performed in the past which dealt with the effect of size and slenderness on pillar strength is reviewed. A new approach for pillar strength calculation and its utilizing in a general problem of overburden–mine workings interaction is proposed. The problem has been illustrated by numerical examples concerning a rock mass static and dynamic behavior in the area of one of the underground Polish copper mines. By solving the numerical model based on the finite element method formulated in three dimensions, the effect of extraction path on mine workings safety in a static load domain has been proved. The dynamic load transfer from mine workings to a shaft lining has also been determined.
| Item Type: | Article |
|---|---|
| Subjects: | Methodology > Other-additional study Region > Poland > Legnica-Glogow Copper District Inducing technology > Underground mining |
| Project: | IS-EPOS project > LGCD: Regional seismicity and ground motion associating underground hard rock mining |