RISK ANALYSIS OF EXPLOSION IN TUNNEL UNDER COAL STOCKPILE FACILITIES USING MONTE CARLO SIMULATION METHODS

• Main Author: Agung Permadi, Dimas
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/51514
• Institution: Institut Teknologi Bandung

Coal mining activities require a coal transportation system from the stockpile to the port, so a coal reclaim tunnel will usually be built to facilitate it. The coal reclaim tunnel is usually built under the coal stockpile area near the port and is equipped with a conveyor belt to transport coal continuously from stockpile to coal barges or to coal carriers. In the coal reclaim tunnel, the risk of fire and explosion due to methane gas and coal dust can occur in the tunnel due to as a result of the process of transporting coal. This research was conducted by conducting a case study in a coal mine tunnel in Tanjung Enim (South Sumatra) and Ombilin (West Sumatra) which will then be further divided into two types of CRT, namely type A and B, where the TRR value of each location will be searched for. get a risk assessment matrix. From the RR value obtained, a monte carlo simulation will be carried out to get the TRR value and its probability. From the simulation results conducted in previous studies, it is known that the Monte Carlo simulation method is quite representative in classifying the level of risk. So that for the case study conducted, it was found that there were 3 groups of risk assessment classifications based on the range of their TRR values. The Tanjung Enim mine has 3 risk assessment groups where group 1 has low risk, group 2 has high risk, and group 3 has moderate risk. Whereas Ombilin has 2 risk categories, where in group 1 has a high risk and group 2 has a moderate risk. Then in each mine a CRT model will be installed based on Mine A and B where the result is that the location where CRT B is installed will experience a decrease in the risk assessment matrix compared to CRT A. distribution of the TRR value so that if we want to reduce the risk of explosion on the CRT we need to pay attention to the factors of the ventilation system.