AN ORE ADIT PLANNING WITH THE HELP OF 3-DIMENSIONAL ORE BODY MODELING: A CASE STUDY FROM ÇULFA ÇUKURU Pb-Zn-Cu-Ag DEPOSIT

Abstract

ABSTRACTÇulfa Çukuru Pb-Zn-Cu-Ag mineralization has occurred along the metamorphic and metamorphicdacitic volcanic rock contacts of the Sakarya zone on the Biga Peninsula. The base metal mineralizations (Pb-Zn-Cu-Ag±Au) developed along the contact and fracture planes of these rocks can be observed as veins, lenses and disseminated ore geometries in the calc-silicate rock assemblages. Base metal mineralizations are mainly controlled lithologically and are generally associated with recrystallized limestones. In this study, the surface and the subsurface were modeled using the topographical data and the geochemical data (Pb% and Zn%) collected from 42 boreholes of Çulfa Çukuru which is located 20 km South-Southeast of Kalkım (Çanakkale). The surface and the subsurface data were interpolated by Kriging and Inverse Distance Weighted methods, respectively. The intersectional areas of Pb% and Zn% modeling data obtained from this study were determined by dividing the areas above the cut-off grade into 4 different sectors (low, intermediate, high, and very high). Using the distribution of the intersections of these sectors, the possible adit lines were determined and also an interpreted map of the adit was drawn for 450 level. This modeling study helps to plan the ore adit to be opened in a mining area. Moreover, according to the important changings that may occur in conditions (e.g. fl uctuations in metal prices or decrasing-increasing costs), models can also be modifi ed during operations.

Physical modeling the formation of roof collapse zones in Vorkuta coal mines

“…It is also used computer modeling, e.g. 3D subsurface modeling for prediction and visualization of ore extraction in an optimal way (Akıska and Akıska, 2018). Finite Element Method as a variation of numerical analyses was successfully used for characterization of rock masses in the tunnel (Kanik et al, 2015).…”