Saint Petersburg Mining University, Saint-Petersburg, Russia:

M. G. Mustafin, Head of Department, Associate Professor, Doctor of Engineering Sciences
B. Yu. Vasiliev, Post-Graduate Student, Vasilev_BYu2@pers.spmi.ru

Belarusian State University, Minsk, Belarus:

A. A. Kologrivko, Dean, Candidate of Engineering Sciences

At present, monitoring of deformation processes, especially at hazardous industrial facilities, is effectively performed on the basis of digital modeling. Comparison of the models in each observation cycle will make it possible to identify zones of dangerous deformations. These models can be constructed using various electronic measurement tools. The paper presents the results of research on a complex deformation process at a mining object: a slope system containing an open pit and an undermined territory. The relevance of the work is justified by the lack of practical recommendations for a digital terrain model (DTM, including the manmade relief represented, for example, by an open pit) of a certain accuracy, required when analyzing the dynamics of deformation processes and when amending the deformation observation procedure. We consider the problem of assessing the accuracy of DEM to allow better approximation to the real-life data. Due to the fact that observations record the finite deformations, the results will be universal, so the technique can be used for all types of rock masses. Creation of the digital terrain models included the classified airborne laser scanning data divided into two parts: the key points of relief—for the model construction; the remaining points of the earth’s surface—for the accuracy estimation. The modeling was carried out at a spatial resolution of 3, 5 and 10 m using the following spatial interpolation methods: Kriging, Radial Basis Function, Natural Neighbor, Triangulation, Minimum Curvature, Inverse Distance. The models are compared, the accuracy analysis is carried out and the application recommendations are offered.

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