Cezary Toś

This paper presents the results of an analysis of sedimentary rocks in Tauron Group quarry. The main purpose of this study was to assess the possibilities of using remote sensing techniques for the categorisation of rock types. The application of remote sensing systems for the categorisation of rock types allows the evaluation of the volume and mineral composition of the material extracted from the quarry. Rock samples collected from the Tauron Group quarry were classified according to their mineral composition. Spectrometric analyses were also carried out in the spectral range of 350‒2500 nm wavelength. Spectral properties and mineral composition characteristics of the samples allow for the evaluation of the potential of using remotely-sensed data for rock classification. Optimal spectral bands for highest separability between individual rock types in the quarry were identified based on the study.

Paper’s main target was verification of a thesis that terrestial photogrammetry with application of vertical offset and a non-specialist photo camera can be used in monitoring of landslide hazard areas. Working included three stages: preparing configuration of a proper equipment, measurement of two objects with different surface with terrestial photogrammetry method and 3D scanning as a comparative method, elaboration of results and drawing conclusions. Results indicate possibility of succesful using the proposed method in cases where high accuracy isn’t required but speed and low cost of measurements.

The results of the numerical simulation of deep excavation supported by a diaphragm walls are presented. Mohr-Coulomb and Hardening Soil models were used. The obtained horizontal displacements are compared with the results of the inclinometric monitoring and the observed discrepancies are discussed. Movement of the bottom of the wall – which is often neglected – is clearly observed both in the numerical simulations and in-situ measurements.

This article describes methods for control over geometry of tanks made of precast panels tensioned circumferentially with external tendons. Certain advantages and disadvantages of applied engineering methods for measurement, along with reasons for necessity to apply more accurate geodetic survey methods are discussed. An example of optimal, according to the author of this article, geodetic technology for control over panel assembly and monitoring of panels tensioning, including relevant study, have been detailed.

The “Wieliczka” Salt Mine has specifi c characteristics, related to the geological structure of the deposit, geomechanical properties of the rock mass, mine operation methods, the impact of the excavations on the surface and on the rock mass and the role of the mine as a cultural monument and tourist attraction. In order for an IT system to manage the mine, the system has to be prepared with consideration of the above-mentioned characteristics, which precludes the implementation of other systems for the Wieliczka mine. The article discusses the methods of creating a part of such a system in the form of a database about the excavations, which may be the basis of the entire system. The database uses the software available at the mine. The article indicates the practical applications of the database in the resolution of engineering and mining issues.

Geodetic works carried out for the purposes of evaluation of technical condition of flood embankments have to meet some special technical criteria. Modern technologies such as classical measurements, the photogrammetric studies and laser scanning have been taken into consideration in the paper. The presented method follows a hybrid approach by integration of classical measurements, scanning function of reflectorless tachymeter and camera images. Experiences based on geodetic inventory of the Vistula Boulevards in Cracow conducted in 2010 r allows to determine the usability of above mentioned methods in this specific measurements. It has been found that in the case of inventory of earth structures the optimal method of measurement needs combining classical methods and scanning tachymeter. The proposed hybrid method is also effective when applied for typical concrete constructions. Using of laser scanners is justified only in the case of measurement of very complicated structure.