| Safety evaluation is a critical aspect of open pit mining operations due to natural geological factors and various mining activities,such as blasting,transportation,and loading;worker actions can further amplify these hazards.However,conducting safety risk assessments aids in identifying and assessing potential dangers associated with open-pit mining operations.This includes evaluating risks related to geotechnical stability,slope failures,blasting,rockfalls,explosives,and transportation systems.Consequently,by identifying hazards,implementing safety measures,and monitoring safety performance,open pit mining operations can mitigate risks effectively and maintain a safe working environment.In this study,we aim to examine accident possibilities,workers’ influence,and the impact and consequences of mining operations at the Bang Mine Iron Ore in the central Republic of Liberia in West Africa.The objective of this study is to examine accident possibilities,the influence of workers,and the impacts of mining operations.The research aims to identify the probability of risks causing severe accidents through on-site investigations,consideration of rock composition,and geological structures,combined with fault tree analysis FTA model.Additionally,the study analyzes mining process impacts and geological conditions and proposes techniques and methods to improve safety outcomes,minimize risks,and mitigate impacts.The research employs the LEC risk assessment model established to identify and quantify the probability of an accident and calculate the positive and negative ideal probability.And the list of hider trouble is listed to evaluate and propose a solution to minimize the safety risks in openpit mining.Finally,the modified LEC model is estimated to determine each accident volume differently from the traditional LEC model.The monitoring system based on the monitoring data is evaluated,with a risk monitoring value of M = 0.2,and the management factor,N,has a value of0.15,which reduces the assignment of possible accident consequences to 15.Therefore,by evaluating the causes and contributing factors of a failure,MNLEC can help safety professionals develop effective risk mitigation strategies;it can also be used to evaluate the effectiveness of existing safety measures and identify areas where improvements can be made. |
