SVIBOR - Project code: 2-01-136

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

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Project code: 2-01-136


IMPROVEMENT AND APPLICATION OF THE BAUXITE EXPLOITATION METHODS


Main researcher: VUJEC, SLAVKO (53580)


Assistants
Type of research: applied
Duration from: 04/30/91. to 04/30/95.
Papers on project (total): 86
Institution name: Rudarsko geološko naftni fakultet, Zagreb (195)
Department/Institute: Department for mining and geotechnics
Address: Pierottijeva 6
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)1-440271
Fax: 385 (0)1-440008
Summary: This project is based on investigation, improvement and application a new methods of underground bauxite exploitation. Open stope method wich is most common in underground bauxite exploitation in Croatia is not safe enough because of forming the large stopes in deposits with competent roof rocks. In weak roof rocks the losses are sometime 50% (S. Vujec, 1991; I. Galić, 1991). In this project several methods are suggested for bauxite deposits with competent roof rocks (B. Perić, S. Vujec, R. Zvežina, 1992; B. Perić, S. Vujec, 1992). Stability of crosscuts and drifts in bauxite are improved with application of rock bolting (S. Majić, S. Vujec, 1990; S. Majić, 1993). Laboratory testing are improved with construction the new shear machine (M. Petzel, 1992, 1993). Rock slope stability in open pits are explored on economical (K. Grabowsky, V. Rendulić, 1992) and safety aspects (R. Zvežina, 1993). The history of exploration and exploitation is described in details in three papers (R. Marušić, K. Sakač, S. Vujec, 1993).

Keywords: bauxite, excavation method, sublevel caving method, open stope method, rock bolting, ventilation of mines, slope stability, soil consolidation, numerical modelling, finite element method, finite difference method

Research goals: The main issues of the research are: - introduction of the rock bolting to the underground openings in bauxite and other rocks in deposit, from the theoretical and practical point of view, - improvement of safety and economical results of the bauxite exploitation, - finding out better or new methods of bauxite exploitation for the deposits under different natural conditions, with the purpose of risk reduction and growth of exploitation output, - investigation of ventilation systems, calculation procedure,and measurement methods, - sampling and laboratory testing of nonhomogenous and discontinuous rock, - slope stability analysis with the limit equilibrium method and finite element method.

COOPERATION - PROJECTS


  1. Name of project: Carbonate Rock Mining/Technology program
    Name of institution: US-Croatian Science-suradnja US Bureau of Mines i RGN fakultet u Zagrebu
    City: 10000 - Zagreb, Croatia
Other information about the project.
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Last update: 10/15/95
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