MARJANBULAK EARTHQUAKE on MAY 25, 2013 with КР=14.1, МS=5.2, I0=7 (Djizakh province, Uzbekistan)

The instrumental data and the results of the macroseismic survey of the Marjanbulak earthquake MwMOS=6.2 with an intensity of 8 on the MSK-64 scale, which occurred in Uzbekistan, are presented. The isoseismal map is given. Correspondence between the intensity of the earthquake manifestation and the regional macroseismic field equation is shown. Geological and geophysical, engineer-geological conditions in the epicentral zone are described. The seismicity of the observation area is reviewed.

Practice-Oriented Approach to the Study of Economics to Students of Engineer-Geological Specialties

Practice-oriented models are essential when teaching economics to engineering students. This chapter will discuss how to set and solve the applied scientific task of processing technogenic mineral reserves. Tools will be offered relating to engineering geological, economic, and mathematical sciences, as well as to form a group of students with various specialties. Experiments will aim to find solutions to these tasks with a generalized gradient method. This chapter will use evolutionary algorithms to calculate ad valorem MET rates. Technogenic raw materials are of economic interest to extract valuable components and produce finished goods. Often, the content of valuable components in technogenic deposits (TD) exceeds the content in natural fields. While secondary mineral resources harm the ecosystem, it is impossible to prevent environmental risks due to the lack of subsoil use. Differentiated rates will be selected based on maximum MET capacity on all valuable components extracted from deposits provided that each deposit is considered an investment project for the stated problem.

Impact of Geotechnical Factors on the Safety of Low Embankment Dams From the Perspective of Technical and Safety Supervision

Our research deals with a broad spectrum of problems concerning the variability of geotechnical factors and their influence on the safety of the biggest group of dam constructions in Slovakia, i.e., low earthfill dams. Its specific aim is the observation of their risk factors by using our experience and knowledge gained while working in the sector of technical and safety supervision. To achieve the aims of a research thesis, we analyzed 39 low earthfill dams. We performed observations and documented their conditions with the aim of clarifying the risk factors. After an analysis of the information materials that characterize dams and after a statistical analysis of the measurement results in situ, including measurements from technical and safety supervision databases, we performed an analysis by using mathematical modeling to evaluate the safety of the dam constructions. Out of the total number of 39 dam constructions, an analysis of the stability of the dam slopes was performed on 37 dams, and deformation problems were analyzed on 28 of the dams. Filtration problems were analyzed at 26 dams, and a complete evaluation of the intensity of filtration movements was performed on 19 of the constructions. On the basis of a detailed analysis of the 39 dam constructions, we specified their problems and the concomitant consequences of the problems. Geotechnical risk factors and specific risks that determine the safety of water constructions were characterized. The analysis confirmed the importance of an engineer-geological and geotechnical checkup in the process of preparation and building (alternatively, during reconstructions and sanitation work) of such water constructions and also the importance of monitoring in the process of dam usage. Technical and safety checkups were also shown to be important when analyzing risk factors. The conclusions of the knowledge gained and the recommendations for the practice deal with recommendations to change the flow policy, develop a central project register, and develop documents and databases that are needed for analyses of the safety of low earthfill dam constructions in the Slovak Republic.

THE CONTRIBUTION TO THE GRAUNDWATER QUANTITIES CALCULATIONS IN CRITICAL SECTIONS OF LANDSLIDE - EXEMPLE LANDSLIDE "MRAKUŠA" IN SARAJEVO

The hydrogeological investigations are inevitable in the whole process in defining of engineer-geological field characteristics and the drafting of landsllides rehabilitation project, but the main goal of these investigations is the groundwater quantities calculations in critical sections of landslides. For gain of exact input parameters for groundwater quantities calculations in critical sections of landslides, it is neccessary to define hydrogeological categories and the function of rock masses, the rock filtration characteristics, hydrodynamic characteristics of groundwater, the level and the angle of groundwater, hydraulic gradient, the directions and filtration speed of groundwater, the conditions of intake recharge and draining of groundwater, hydrogeological and hydrochemical characteristics of groundwater and other factors and elements of groundwater regime. In this paper the example of groundwater quantities calculations in critical sections of landslides is shown, based on the results of hydrogeological investigations and examinations in rehabilitation of landslide “Mrakuša” in Sarajevo.