Safety risk management in Bosnian-Herzegovinian underground coal mines is not based on a systematic approach and standardized risk management methods. Mostly there is a traditional approach present, i.e. reaction to incidents/accidents that happen. This paper aims to point out the need for proactive approach introduction with an emphasis on importance of ventilation systems failure mechanism simulation analysis in planning of people and property defense and rescue in crisis situations. Based on ventilation parameters measuring results for a given research site (brown coal mine), a model was developed on which a simulation analysis was performed for three characteristic ventilation failure cases: spontaneous oxidation at the longwall exit, collapse at the entrance to the longwall and methane outburst - preparation of a new excavation field. VnetPC and CFD “Fluent” software packages were used to simulate mine ventilation. Keywords: risk management, brown coal mine, safety, ventilation system, longwall, simulation analysis, VnetPC, Fluent.

Power plants, such as coal boilers, emit flue gases containing solid particles and gases resulting from the combustion of coal. One of the most dangerous pollutants emitted is certainly sulfur dioxide. Therefore, the reduction of emissions of sulfur dioxide has become a legal obligation. So far the most successful method of reducing the content of sulfur dioxide in the combustion products leaving the environment is injecting limestone or lime in combustion and to provide conditions for the reaction between the injected lime and sulfur dioxide from combustion products still in the combustion chamber. This method has been successfully used in thermal power plants to coal. This paper deals with the possibility of introducing the process of dry flue gas desulphurization created during coal combustion in boilers of smaller.

The paper presents the potential areas in Bosnia and Herzegovina (BiH) for injecting  CO 2 into underground geological formations by boreholes. Areas are determined based on the geological structure of Bosnia ana Herzegovina, and development of Miocene formations which are the most prevalent in the northern and northeastern parts of the country, in the central part of country and southwest of Bosnia and Herzegovina. Furthermore paper gives an overview of  potentials for injecting CO 2 into abandoned coal mines, and abandoned salt mine.

Geophysical explorations enable determination of causes to damage or inflicted injuries, understanding of initiation mechanism of accident and proofing of hypothesis beyond reasonable doubt in court proceedings thus leading to material evidence that will either confirm or deny initial hypothesis. Mining operations in Lipnica underground mine were conducted for about 50 years and were stopped at the begging of the war in 1992. Main openings of the mine, as well as the former mining panels in roof coal seam, are located directly under the settlement Lipnica. After more than two decades of mine closure a number of court proceedings are still pending. It concerns claims for compensation of evident damages inflicted on houses. Conventional calculation methods of subsidence dynamics and time frame of consolidation process that were defined in planning of mining operations and previous forensic investigation were mainly stressing the fact that the giving time distance is to long to expect effects of mining operations. The paper gives overview of a comparative analysis of mining-geological conditions and geophysical explorations in the case of forensic investigation into damages inflicted of houses, including analysis of possibilities to apply geophysical forensics in investigation of underground mining operations impacts.

During the construction of the basement in the renovation of SNG Opera and Ballet in Ljubljana, it is important to secure the underground construction site. The underground site’s annex has the following dimensions: 34 x 38 m in area and 9,5 m in depth. The construction site for the stage tower has the following dimensions: 15 x 19 m in area and a depth of 14,5 m. The reinforcement of the site was provided using anchored buried wall with a width of 60 cm manufactured out of concrete, type C 25/30. Carrying out the geotehnical works of any construction site is based on detailed project planning, as this process is dependent on taking into the account all of the components of project’s completion. The geotehnical works execution stage of the construction process is unpredictable in nature due to uncertainty and unforeseen events, therefore it is commonly expected that there will be delays and deviations from the scheduled construction plan. This dissertation addresses deviations and delays encountered during the execution of geotehnical works for the above mentioned case study.