【摘要】 房柱交替式上向分层充填法是三山岛金矿深部采用的主要采矿方法,国内采用该方法的矿山所选取的结构参数大小不一,因此依靠工程经验类比难以得出适合矿山的采场参数。针对这个问题,结合三山岛金矿深部高应力、高岩爆倾向性的特点,通过数值模拟得到不同结构参数条件下采场一步采与二步采过程中盘区顶板沉降和采场内的位移,综合考虑相对生产能力、综合效率、设备匹配度、施工难度等因素,建立了采场参数的模糊综合评价模型。通过合理确定评价指标的隶属度函数,以及运用变异系数法、模糊判据法和熵值法的多重赋权优化确定各评价指标的权重,对列出的5种方案进行综合评价,确定了符合矿山实际条件的最优采场参数,从而保证了矿山的安全生产和经济效益。更多还原

【Abstract】 Alternate room-pillar mining method with ascending backfill is the main one mostly used in deep mining of Sanshandao Gold Mine. In mining practice of the metal mines,mines that adopted this method at domestic usually selected different structural parameters,and therefore,it is difficult to draw suitable parameters relying only on analogy or engineering experience. Aiming at those problems and combining with high stress and rock burst possibility in Sanshandao gold mine,the displacement and roof settlement of the middle section in one-step and two-step mining process under different structural parameters are obtained by numerical simulation. Combined with comprehensive efficiency,relative productivity,equipment matching degree and construction difficulties,the model of fuzzy comprehensive analysis is established. Through scientifically determining the membership function and establishing the weight of each factor by variation coefficient method,fuzzy criteria method and entropy method,five schemes listed are evaluated. Then,the optimal stope parameters for the practical mine are selected so as to ensure safety production and better economic profit as well.更多还原