The Application of Fuzzy Comprehensive Evaluation to Risk Assessment of Coal Floor Water Irruption

The safety of production in mines are significantly affected by Ordovician limestone water disaster from coal floor, it is very important to evaluate and forecast floor water invasion. Analyzing its influence factors and setting as evaluation indexes for risk assessment of floor water irruption. The fuzzy comprehensive evaluation model is based on adopting fuzzy comprehensive evaluation method to process the fuzzy relationship among indexes, using analytic hierarchy process to quantify the qualitative questions and get the weight of influencing factors. Utilizing the model to evaluate the risk of floor water irruption of 6119 coal face in Suancigou mine, the evaluation result provides reference for Ordovician limestone water disaster prevention and ensures the safety of coal mine.