基于模糊物元模型的矿房回采顺序方案优选研究

以某矿山矿体开采为研究对象，提出了波浪型开采、倒V型开采和斜线型开采等3种回采方案。利用FLAC^3D对3种方案进行回采顺序模拟，给出了各方案回采顺序对采场应力、位移以及塑性区的影响趋势。在此基础上选取最大主应力、最大拉应力、顶板沉降位移、底板鼓起、边帮水平位移和塑性区体积共6个评价指标构建了模糊物元评价模型，采用变异系数法确定各指标值的权重，最终确定3种方案的关联度分别为0.9190，0.9774，0.9251，按照最大关联度原则确定了倒V型开采方案为最优方案。该研究思路可为类似矿山提供参考。

Optimal Selection of Stoping Sequence Scheme Based on Fuzzy Matter-Element Model

As for the ore body in a mine, three stoping schemes were proposed, including S-pattern stoping, stoping with an inverted V pattern and stoping with a diagonal pattern. Those three schemes of stoping sequence were then simulated by using FLAC^3D, and the effects of each stoping sequences scheme on the stress, displacement and plastic zone were analyzed. On this basis, six evaluation indicators, such as maximum principal stress, maximum tensile stress, roof settlement displacement, floor heave, horizontal displacement of pit wall and volume of plastic zone, were selected to construct a fuzzy matter-element evaluation model, and the weight of each index value was determined by using the coefficient of variation. And the correlation degrees of those three schemes were determined to be 0.9190, 0.9774 and 0.9251, respectively. Finally, the stoping scheme with an inverted-V pattern was considered to be the optimal scheme according to the principle of maximum relevance. This research can provide reference for other similar mines.