文档介绍：四方金矿矿石流动规律和矿块结构参数优化研究郭进平1王小林1,2汪朝1潘健3(1西安建筑科技大学,陕西西安710055)(2紫金矿业集团股份有限公司,福建龙岩364200)(3陕西凤县四方金矿有限责任公司,陕西宝鸡721705)摘要:针对四方金矿无底柱分段崩落法17m分段过高导致悬顶的问题,。通过端部放矿相似物理实验,结合椭球体放矿理论和数学回归分析,测定了反映四方金矿矿石流动规律的移动边界系数和移动迹线指数,,,,。在此基础上,根据矿石放出体大间距排列理论确定最佳进路间距为14m,根据放出体为前倾扁椭球体缺推导出崩矿步距与矿石回收率、贫化率之间的函数关系,构建回贫差计算模型,以回贫差评价矿石回收效果,-。研究结果为矿山优化结构参数、避免悬顶事故提供了依据。关键词:无底柱分段崩落法;端部放矿;回贫差;结构参数优化ResearchonOreFlowingLawandStructuralParameterOptimizationofSifangGoldMineGuoJinpingWangXiaolinWANGZhaoPanJian('anUniversityofArchitectureandTechnology,Xi'an,Shaanxi,710055,China)(,Longyan,Fujian,364200,China)(,Baoji,Shaanxi,721705,China)Abstract:Aimingattheflaptopproblemcausedby17mhigh-sublevelofthenon-pillarsublevelcavingmethodinSifanggoldmine,-,themovingboundarycoefficientandthemovingtraceindexwhichreflectthelawoforeflowinSifanggoldminearemeasured,,,,ordingtodrawbodyarrangementofbigspacing,deducedthefunctionofindependentadvanceoforebreakingwithore-ordingtodrawbodyisaforwardleanflatmissingellipsoid,themodelofratiodifferencebetweentherecoveryanddilutionisconstructed,andtheeffectoforerecoveryisevaluatedbyratiodifferencebetweentherecoveryand