Risk Assessment and Safety Evaluation of Mining System

摘要

This paper aims to highlight the basic procedures of risk assessment techniques and their limitations. A case study has been carried out and the risks of various groups in terms of job title, causes of accident, and body parts injured are estimated using traditional qualitative risk matrix. A risk hierarchisation scheme is developed for mining systems. A risk function for the job title categories of the mine is also developed incorporating the age and experience of the injured workers. The case study results show that the risks of miner I loader and leg injuries are unacceptable and loading of coal and slip and fall mainly caused them. The study clearly reveals that the traditional risk assessment scheme is very useful in avoiding major mining risks. The residual risks may be reduced further with the help of statistical risk modelling which enables the assessors to understand the causal effects of risk factors on work injuries. The risk hierarchisation scheme and the risk function, as developed, are required to be used for more number of mines for generability. However, the risk function needs to be re-evaluated incorporating maximum number of risk factors for more number of mines.