Concept Paper on Shaft Sinking of the Mine "Trepca" in Stanterg New Horizons XIth to XIIIth

Abstract

The purpose of this paper is to calculate the expenses for shaft sinking below horizon XI th and exploitation fronts in deep horizons of Trepça Stantërg lead and zinc mine and to evaluate on a conceptual basis if a shaft is most suited for underground access requirements from horizon XI to XII which is located on above sea level 15.20m to -45.20m. Even the existing shaft is built until horizon XI there is high water in-flow on the depth, which would prevent the continuation of the shaft construction. This paper was focused on the construction cost and schedule differences of shaft deepening that is currently the most typical access alternative used currently. According to the literature, there are several methods that can be used but no clear answer to state that one method is better because it depend on the ground situation and circumstances. Several different conditions will be assessed in order to find the degree of sensitivity of methods, in particular, comparison of the construction cost and schedule or sinking a shaft. This practice could be experienced in other similar mines as well.