Study on Optimization of Stope Structure Parameters Based on EWM-GRA Comprehensive Evaluation
In order to achieve the goal of increasing production of an underground phosphate rock,the EWM-GRA comprehensive evaluation model was constructed by combining the EWM entropy weight meth-od and the GRA grey correlation method under the comprehensive consideration of mining safety,technical and economic factors.Based on the evaluation model,nine groups of different stope structure parameter schemes were analyzed.The results show that the scheme with the route width of 3.5 m and the route height of 3 m is the best.From the field practice,the mining volume per meter of the 3.5 m×3 m stope structure parameter scheme is 27.37%higher than that of the original design scheme,which can achieve the goal of increasing production.Compared with the original scheme,the economic benefit of each approach has in-creased by 28.33 thousand yuan,which is greater than the increased mining cost,indicating that the opti-mized stope structure parameter scheme is reasonable and feasible.The research results can provide refer-ence for the design of structural parameters of phosphate mine stope.
stope structure parametersEWM entropy weight methodEWM-GRA comprehensive evaluation model
万方数据
维普
