- Type of paper
: Paper in book
Title: Efekti miniranja u urbanim sredinama
- Authors:
- Strelec, Stjepan (152670)
- Gotić, Ivan (123282)
- Božić, Branko (125442)
Publisher: A.A.Balkema/Rotterdam/Brookfield/1993
ISBN: 90 5410 316 7
Year: 1993
Pages: from 121 to 126
Number of references: 6
Language: engleski
Summary: The article gives comparative analyses of allowed
explosives quantites at blasting in urban environments. In stone.pit
"Špica" executed were precise measurings after mass blasting in order to
obtain the value of allowed explosive quantity with respect to adjacent
housing structures. The measurings were performed at several observation
spots, with three-component geophones and a comparative analysis,
considering the criteria in the world, is give.
Keywords: Blasting, Seismic effects, Allowed oscillation velocites
- Type of paper
: Paper in journal
Title: DETERMINATION OF THE DRILLING GEOMETRY FOR BLASTING
- Authors:
- Strelec, Stjepan (152670)
- Božić, Branko (125442)
Journal: CROATIAN GEOTECHNICAL JOURNAL
Number: 1-2
ISSN: 1330-4925
Volume: 1
Year: 1994
Pages: from 19 to 29
Number of references: 6
Language: engleski
Summary: The drilling geometry for blasting can be determined by the
amount of explosive energy transferred to the rock mass. All parameters
which are required for the determination of the drilling geometry are give
for different explosives and for different rock types. An example of
calculation of the parameters which define the drilling geometry is
presented. This example is related to a limestone quarry. A relationship
between the burden, which is the distance between the charged borehole and
the free rock surface, and the velocita of longitudinal waves in the rock
mass is establised based on measured values for different quarries. It is
shown that the drilling geometry can also be determined from this
relationship. The values of the drilling geometry calculated from this
relationship are in a very good agreement with those calculated by the
explosives energy transferred to the rock mass.
Keywords: Explosive energy, Velocity of longitudinal waves, Limestone, Burden
- Type of paper
: Paper in journal
Title: EVALUATION OF SLOPE STABILITY OF QUARRIES BUILT IN
CARBONATE ROCKS
- Authors:
- Strelec, Stjepan (152670)
Journal: CROATIAN GEOTECHNICAL JOURNAL
Number: 3-4
ISSN: 1330-4925
Volume: 2
Year: 1994
Pages: from 61 to 68
Number of references: 4
Language: engleski
Summary: The shear strength parameters c and f which are determined
in the laboratory may also be evaluated based on the seismic refraction
method which is one of the most frequent methods used in geophysical
investigations because it is relatively cheap and simple. A PC programme
was devolped using Turbo Basic for plane slope stability analysis. The
programme determies the factors of safety for various discontinuity and
slope angles , and determines the functions of slope angle and slope
height. The factors of safety for the analysis of slopes with plane
failures can also be evaluated from the Hoek curves.
Keywords: Carbonate rock, velocity of longitudinal waves, slope, factor of safety.
- Type of paper
: Paper in proceedings
Title: Tectonik fabric and blasting in dolomite rocks
- Authors:
- Božić, Branko (125442)
- Braun, Karlo (56890)
Proceedings title: 7 International Congress on Rock Mechanics
Language: engleski
Year: 1991
Pages: from 1031 to 1035
Meeting: 7 International Congress on Rock Mechanics
Held: from 05/15/91 to 05/20/91
Summary: The paper deals with the relationship betwen the results
ofexplorations in the tectonic fabric of the dolomite rock massesand
results of geophysical explorations, and the blast parameterswhich have
optimal effects in open pits and quarries
Keywords: Tectonic fabric, Blasting, Dolomite rocks
- Type of paper
: Paper in proceedings
Title: Optimalization of Blasting in "Lakovići"-Limestone Quarry
- Authors:
- Božić, Branko (125442)
- Braun, Karlo (56890)
Proceedings title: Zbornik Rudarsko-geološko-naftnog Fakulteta
Language: hrvatski
Place: Zagreb
Year: 1992
ISBN/ISSN: 0353-4529
Pages: from 81 to 85
Summary: The optimalization of exploatation in "Lakovići" limestone
quarryis described. Based on determined discontinuites in the rock massand
their densities, the best possible working site have beenlocated in order
to obtain the possible sizes of blasted rock andwork slope stability.
Optimal lowest resistance line size for the quarry has beencounted and
proved experimentally.
New blasting parameters have resulted in considerable saving ofdrilling and
explosive.
Keywords: Tectonic fabric, Blasting, Quarrying.
- Type of paper
: Paper in proceedings
Title: Investigation on Rocks for Projects at Blasting in "Križ"
and "Belski Dol" Quarries. Application of the Shallow Seizmic Refraction
Method
- Authors:
- Božić, Branko (125442)
- Strelec, Stjepan (152670)
Proceedings title: Zbornik Rudarsko-geološko-naftnog Fakulteta
Language: hrvatski
Place: Zagreb
Year: 1992
ISBN/ISSN: 0353-4529
Pages: from 87 to 93
Summary: Field investigations of softer and harder dolomite
zones,measurements of naturally divided fragments in rock masses
andinvestigations of rock mass by refractional geophysical method inthe
blasting area of the quarry were carried out.
The obtained results provided the basis for selective projects
ofexploitation and blasting.
Safety measures regarding possible damage to adjacent housingestates during
blasting were determined.
Keywords: Dolomite quarry, Tectonic fabric, Longitudinal wave velocity, Blasting, Shallow seizmic refraction method.
- Type of paper
: Paper in proceedings
Title: Influence of Seismic Blasting Effect on Neighbouring
Structures (A Comparative analysis)
- Authors:
- Strelec, Stjepan (152670)
- Baturić, Ivan (123313)
- Božić, Branko (125442)
Proceedings title: Zbornik Rudarsko-geološko-naftnog Fakulteta
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 0353-4529
Pages: from 181 to 186
Summary: The article gives a comparative analysis of allowed
explosivequantities at blasting in the limestone quarry Špica executedwere
prcise measurings after mass blasting. The measuring wereperformed at two
observaton spots, with three-component geophonesand a comparative analysis,
considering the criteria in the worldare described.
Keywords: Blasting, Seismic effects, Allowed oscillation velocites.
- Type of paper
: Paper in proceedings
Title: The effect o Blasting on Urban Environment
- Authors:
- Strelec, Stjepan (152670)
- Gotić, Ivan (123282)
- Božić, Branko (125442)
Proceedings title: Rock Fragmentation By Blasting
Language: engleski
Place: Balkema, Nizozemska
Year: 1993
Pages: from 121 to 126
Meeting: International Symposium on Rock Fragmentation by blasting
Held: from 07/05/93 to 07/08/93
Summary: The article gives a comparative analysis of allowed
explosivequantities at blasting in urban environments. In stone pit"Špica"
executed were precise measurings after mass blasting inorder to obtain the
value of alowed explosive quantity withrespect to adjacent housing
structures.
The measurings were performed at several observation spots,
withthree-component geophones and a comparative analysis, consideringthe
criteria in the world, is give.
Keywords: Blasting, Seismic effects, Urban Environment
- Type of paper
: Paper in proceedings
Title: Breaking Down of Damaged and Old Concrete and reinforced
Concrete Structures
- Authors:
- Božić, Branko (125442)
Proceedings title: Simpozij o industriji nemetala u obnovi i razvoju Republike Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1992
Pages: from 195 to 204
Meeting: Simpozij o industriji nemetala u obnovi i razvoju Republike Hrvatske
Held: from 05/15/92 to 05/17/92
Summary: It is known for a certainty that in aggression against
Croatiaseveral ten thousand structures were damaged to a greather orsmaller
extent.
Within the reconstruction of the country a great part of thesestructures
which were built of concrete and reinforced concrete,will have to ber
broken down and replaced with new ones on theirplaces.
Depending upon their locations in the urbane environment oroutside of it,
the breaking down of these structures is possiblein two different ways.
A conventional mode of breaking down the structures by mining andthe
application of unexplosive means for breaking the concreteand reinforced
concrete on the basis of expansion stress arepresented.
Keywords: Blasting, Breaking Down, Concrete and reinforced Concrete Structures
- Type of paper
: Paper in proceedings
Title: Modern Approuch to Blasting Activities
- Authors:
- Božić, Branko (125442)
Proceedings title: Sabor Hrvatskih graditelja
Language: hrvatski
Place: Crikvenica, HR
Year: 1993
Pages: from 783 to 786
Meeting: Sabor Hrvatskih graditelja
Held: from 09/30/93 to 10/02/93
Summary: Recent rock-massif prospecting methods on geophysical
proceduresof refraction seismic profiling are presented. Result obtainedare
also used to define blasting parameters through computer-simulated transfer
of energy to the rock. Characteristics of ANFOexplosives and their use in
Croatia are described.
The author analyzes several significant computer programs used inthis field
and describes the way of blasthole acitvation usingthe NONEL system that is
gradually replacing traditionalfusebased activition procedures.
Keywords: Blasting activities, Rock massif, Computer simulation, ANFO explosive, Blasthole, NONEL system
- Type of paper
: Paper in proceedings
Title: GEOSTATISTICAL ANALYSIS OF BROKEN MORPHOLOGIC BLOCKS
- Authors:
- Marijanović, Pero (184960)
- Kovač, Ivan (179253)
Proceedings title: COMPUTER APPLICATIONS AND OPERATIONS RESEARCH IN THE MINERAL INDUSTRIES
Language: engleski
Place: BLED, SLOVENIJA
Year: 1994
Pages: from 118 to 129
Meeting: 1st Regional APCOM SYMPOSIUM
Held: from 06/20/94 to 06/23/94
Summary: Morphological investigations are today a vital part of
karst research. The region of Herzegovina and Dalmatia are situated in the
part of Croatia and Bosnian and Herzegovina where the famous Dinaric karst
is very well developed, together with a great mumber of bauxite orebodies.
Thesedeposits are well known by their number, quality and diversity of
morphological types. This is a basic motif for morphological investigations
of karstic paleorelief.
Keywords: Geostatistical, Morphologic block, Regionalized variable, Disjunctive kriging, Correlation spatial, Anisotropy.
- Type of paper
: M.A.
Title: Determination blasting parametars rock massif by
geophysical methods
Faculty: Rudarsko-geološko-naftni Zagreb
Date of defense: 02/10/93
Language: hrvatski
Number of pages: 99
Summary: The functional dependency between longitudinal wave
velocitiesindicating rock hardness and some
drilling-and-blastingparameters, such as explosive quantities per ignition
degree withregard to the allowed rosk/soil oscillation velocity,
shearstrength parametars (needed in quarry and level stabilityanalysis)
burden lines based on burden linear increase, has beena result of the
analysis of field measurements.
For our purpose we have produced three applicational programmesfor PC
computers:
- Refractional Seismic Programme
- Estimation of Allowed Explosive Quantities according to worldstandards,
- Maximal Quarry Height (Slope Stability) Analysis.
Keywords: Shallow Refraction Seismics, Blasting, allowed rock/soil oscillation velocity, drilling-and-blasting parameters, Slope Stability, Quarry.
- Type of paper
: M.A.
Title: Numerical taxonomy classification of metatarsal and
metacarpal bones species Ursus spelaeus and U. arctos
Faculty: Prirodoslovno-matematički Zagreb
Date of defense: 06/11/93
Language: hrvatski
Number of pages: 135
Summary: Numerical taxonomy was used in this work for classification
ofmetatarsus and metacarpus bones of two species: Ursus spelaeusand U.
arctos. The method is applied for the first time inCroatia in a
paleontological research.
The complete taxonomical classification results in sorting of themetacarpus
and metatarsus bones (OTO), objexts) into groups, onthe ground of selected
criteria.
The result of the usage of UPGMA method (unweighted pair-groupmethod using
arithmetic averages) have been presented bydendrogram.
The numerical-taxonomical classification based on themorphometrical
characteristics point out the variability offossil and recent material.
Variability within fossil materialcould be the result of different
geological ages of individualfindings.
Keywords: Numerical taxonomy, Metatarsal and metacarpal bones, Species Ursus spelaeus and U. arctos, Dendrograms.
