ENGINEERING GEOLOGY ROCK PARAMETERS FOR CONTROLLED ROCK BLASTING ON THE HIGHWAY SPLIT-PLOČE
Defining geology engineering and hydrology parameters of the route is very important from the aspect of rock mass data collection and resulting blast design. Over the last decade there have been considerable advances in our ability to measure and analyze blasting performance. These can now be combined with the continuing growth in computing power to develop a more effective description of rock fragmentation for use by future blasting practitioners. Results of engineering-geological research are significant for the optimization of blasting parameters. These data are showing a real picture of rock mass, and they are as follows: statistics of density of discontinuities, determination of “GSI”, Hoek-Brown criteria for strength of rock mass and “in situ” determination of mechanical parameters, including geophysical survey data. Three factors control the fragment size distribution: the rock structure, the quantity of explosive and its distribution within the rock mass. Rock excavation by blasting for the highway is held in complex environment. Such conditions force restrictive criteria which than protect environment from seismic influence and mechanical damage.
Rock parameters for blasting on the highway Split- Dubrovnik
The paper deals with the results of explorations in the tectonic fabric of rock masses, exploration and the blasting parameters which have optimal effects in sections of the highway Split-Dubrovnik. Three factors control the fragment size distribution: the rock structure, the quantity of explosive and its distribution within the rock mass. In addition, rock state properties like weathering, block size, joint characteristics are investigated. Field studies show that fragmentation is also related to the rock mass structure. Results of engineering-geological research are significant for the optimization of blasting parameters. These data are showing a real picture of rock mass, and they are as follows: statistics of density of discontinuities, determination of “GSI”, Hoek-Brown criteria for strength of rock mass and “in situ” determination of mechanical parameters, including geophysical survey data. This paper presents blasting parameters, and determination and use of “GSI”.
Production of new antituberculosis drug and other medical preparations by electron beam treatment
Abstract Possibility of electron beam usage for immobilization of hydrazidum of an isonicotinic acid (HIA) on dextrane was studied to produce a drug for treatment of a tuberculosis. As a result of irradiation of dextrane the processes of oxidation and formation of polysaccharide occur due to carbonyl groups which are to link isoniasidum. The HIA immobilized on dextrane may be used as an effective medical preparation having prolonged action for action on endo and extracellular population of Micobacterium tuberculosis .