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中文摘要：
模糊评判法能较好地解决方案选择的问题。本文针对石人沟铁矿露天转地下矿山过渡期开采期间，矿山地下开采带来的露天边坡、地下采场稳定性问题，通过数值模拟，得到地下第一中段开采时地下采场和边坡的应力、应变数值，并结合矿块的采切比、矿块回采率经济指标，运用模糊数学的方法，建立了考虑经济效益的稳定性模糊评判模型。通过合理确定评价指标的隶属度函数和利用二元排序法构造判断矩阵确定各评价指标的权重，对9种方案进行了综合评判，确定了最优方案，选出了合理的矿房结构参数，既可保证矿山的安全生产，又可保证矿山经济效襦。
英文摘要：
Project option assessment has been well solved by using fuzzy decision method. Fuzzy decision model considering economic benefit and stability was established aiming to solve the question about stability of open pit slope and underground stope during the transition period from open pit to underground mining, in which fuzzy mathematics was used and stress and strain of the slope and underground stope caused by digging the first section combined with economic indices of ore block stripping ratio and recovery rate were comprehensively considered. By means of scientifically determining the membership function of each factor and establishing the weight of each factor by constructing the judging matrix through binary taxis, the optimal one was selected from nine schemes made up of different combination of room structural parameters , which could ensure not only safety production but also better economic profit
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