SVIBOR - Project code: 2-99-152

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr

SVIBOR

SVIBOR - Collecting Data on Projects in Croatia

Project code: 2-99-152


RESEARCH OF CLAY IN SITU BY USE OF EXPLOSIVE


Main researcher: GOTIĆ, IVAN (123282)


Assistants
Type of research: developmental
Duration from: 01/01/91. to 12/31/95.
Papers on project (total): 31
Institution name: Geotehnički fakultet, Varaždin (160)
Department/Institute: Geotechnical Department
Address: Varaždin, Halerova aleja 7
City: 42000 - Varaždin, Croatia
Communication
Phone: 385 (042)45-491
Fax: 385 (042)45-587
Summary: The suggested explorations will include complex siesmic prospecting of soils IN SITU at sites where geotechnical drilling is to be carried out. Beside recording of primary (longitudinal) waves, the velocities of the transversal (Vs) waves will aslo be determined using appropriate methodology. The waves will be induced both mechanically and by means of explosives. The results will be correlated, in a more qualitative way, with those of geotechnical laboratory tests. Large numer of geotechnical boreholes and seismic recorders will enable the application of a statistical i.e. the method of the smallest quadrangles for the determination of a reliable curve in correlation diagrams. Special attention will be paid to the development of the methods of blasting in local conditions and compression od clay sediments with the application of vertical elongated fillings with simultaneous production of vertical sand drainage. The recent years have seen a noted use of the deep blasting methods in stabilizing clay sediments. It can be assumed that the deep blasting method can be used successfully to increase the stabilities of waste earth heaps in open pits, specially in seismic conditions. The rerults of compression by mens of deep explosions in Canada speak in favour of this method. Futrher developments of this method of stabilization through blasting is related to the developments of this mithod of stabilization through blasting is related to the developments in general theoretical and experimental explorations of explosion effects. The results expected in our explorations should enable us to control both structural disintegration and comprssion of clay layers. The use of explosives will give us additional information for the determination of seismic risk i.e. potential earthquakes.

Keywords: Geotechnical exploration of clays, Explosive, Field tests, Seismic refraction, Primary waves, Secondary waves, Seismic logging, Blasting, Laboratory tests, Dymanic elastcity constants, compression.

Research goals: Certain compression i.e. increased compressibility modulus of clays, as a tesult of this, better quality of sublayers for future motorways might be the result of the described complex explorations. Experimental blasting and corresponding instrumental prospecting would enable simulation of the bibrations expacted in future due to various types of vehicles. The summary brings other expected results and goals.
Other information about the project.
MZT Croatian language SVIBOR Alphabetic list Sorted on project code Sorted on institutions Search help
Ministry of
Science and
Technology		 Croatian
language		 Svibor
homepage		 Alphabetic
list		 Sorted on
project code		 Sorted on
institutions		 Search Help
Last update: 09/07/95
Information: svibor@znanost.hr