Development of a numerical model for reduction of geohazard risk; Case studies – underground salt caverns in Tuzla, B&H

This paper describes the key elements of development numerical model and performing elasto-plastic and visco-plastic 3D analysis, which has not previously been developed in relation to the problem of the Tuzla Salt Mine in Bosnia and Herzegovina or similar salt mines problems. Nonlinear finite element analysis allow the calculation of stresses and deformations, and so obtain the data needed to assess the stability of the salt caverns over time, and thereby the surface subsidence across the extensive area of the city of Tuzla. This required the introduction of upgrade simulation software packages ABAQUS for solving the complex problem of the Tuzla Salt Mine. It is another new and important factor in the development of numerical model, because the finite element method and computer simulation are powerful tools that assist the management and engineering force of mining companies with taking reasonable decisions about and steps toward improving the quality of work and safety of all employees, as well as the whole environment in the zone of subsidence. Results of stress strain analysis have been compared with measured values (vertical displacement of surface), over a period of time.