无底柱分段崩落法结构参数优化研究
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摘要
为提高矿石的回收率,使矿山的经济效益最大化,对无底柱分段崩落法的结构参数进行优化研究。以某铁矿为工程研究背景,以单体放矿椭球体理论为基础,以纯矿石回收量和回收率最大化为原则,结合矿山工业偏心率确定影响放矿效果的3个因素即分段高度、进路间距、崩矿步距,估算该矿分段高度为30m时的进路间距、崩矿步距。通过单体放矿实验对椭球体理论进行验证,为了得到更加稳定的实验数据,采用5个分段放矿模型,分析实验数据,通过MATLAB拟合得出放出体表面方程中的参数,然后利用这些参数求出放出体沿进路方向以及垂直进路方向上的偏心率,使用幂函数方程拟合椭球体高度与偏心率的方程,根据实验所得数据计算某铁矿采场最优结构参数,并与理论参数进行对比,最终确定合理的采场结构参数。
In order to improve the recovery rate of ore and maximize the economic benefits of mine,the structural parameters of sublevel caving method without sill pillar are optimized.With an iron mine as the engineering background,based on the theory of monomer ore ellipsoid,in the principle of maximizing pure ore recovery quantity and rate and combined with the parameters for three factors influencing the effect of ore drawing in determination of the eccentricity ratio in mining industry-sublevel height,drift interval and ore caving interval,the data of drift interval and ore caving intervalare estimated when the sublevel height of the mine is 30 m.The ellipsoid theory is verified by the monomer ore drawing test.The five-stage ore drawing model is used for analyzing the experimental data to obtain more stable experimental data.Parameters in the surface equation of the release body are obtained by fitting with the software MATLAB.Using these parameters,the eccentricity of the release body along the direction of approach and in the direction of vertical approach are calculated.The ellipsoid height and eccentricity are fitted by power function equation and according to the experimental data,the optimal structural parameters of an iron ore stope are calculated,and compared with the theoretical parameters,the reasonable structural parameters of the stope are finally determined.
In order to improve the recovery rate of ore and maximize the economic benefits of mine,the structural parameters of sublevel caving method without sill pillar are optimized.With an iron mine as the engineering background,based on the theory of monomer ore ellipsoid,in the principle of maximizing pure ore recovery quantity and rate and combined with the parameters for three factors influencing the effect of ore drawing in determination of the eccentricity ratio in mining industry-sublevel height,drift interval and ore caving interval,the data of drift interval and ore caving intervalare estimated when the sublevel height of the mine is 30 m.The ellipsoid theory is verified by the monomer ore drawing test.The five-stage ore drawing model is used for analyzing the experimental data to obtain more stable experimental data.Parameters in the surface equation of the release body are obtained by fitting with the software MATLAB.Using these parameters,the eccentricity of the release body along the direction of approach and in the direction of vertical approach are calculated.The ellipsoid height and eccentricity are fitted by power function equation and according to the experimental data,the optimal structural parameters of an iron ore stope are calculated,and compared with the theoretical parameters,the reasonable structural parameters of the stope are finally determined.
引文
[1]鲁中金矿集团公司,长沙矿冶研究院,东北大学.大间距集中化无底柱采矿新工艺研究,国家“十五”科技攻关课题验收报告[R].2003.
[2]张辉.基于数值模拟的大红山铁矿采场结构参数优化[D].昆明:昆明理工大学,2013.
[3]乔登攀,汪亮,张宗生.无底柱分段崩落法采场结构参数确定方法研究[J]采矿技术,2006(3):233-236+253.
[4]任风玉.随机介质放矿理论及其应用[M].北京:冶金工业出版社,1994.
[5]孙文勇,谭宝会,张志贵,等.某矿山无底柱分段崩落法矿石损失贫化原因分析[J].化工矿物与加工,2013,42(10):32-35.
[6]黄泽,盛建龙,李迅.放出漏斗形态及脊部残留矿石高度的试验研究[J].化工矿物与加工,2011,40(5):19-22.
[7]王泳嘉,刘兴国.对多漏孔放矿放出体的研究[J].东北工学院学报,1980(2):47-56.
[8]王泳嘉.放矿随机介质理论---兼评马拉霍夫的椭球体理论.东北工学院第六届科学报告会[R].1979.
[9]朱卫东,原丕业,鞠玉忠.无底柱分段崩落法结构参数优化主要途径[J].金属矿山,2000(9):12-16.
[10]金闯,董振民,范庆霞.梅山铁矿大间距结构参数研究与应用[J].金属矿山,2002(2):7-9.
[11]刘兴国.放出体基本性质及其应用[J].矿山技术,1984(1):16.
[12]李迅,盛建龙,程爱平,等.无底柱分段崩落法结构参数研究[J].化工矿物与加工,2011,40(10):21-23.
[13]Douglas C.P Physical modeling of draw bechavior of broken rock incaving[J],Colorado School of Mines Quarterly,1984,79(3).
[14]R Y.A,IA E.Selection of stope shape in sublevel caving systems[J].Journal of Mining Science,2002,38(6):596-600.
[15]S.B.Stazhevskii.Features of folw of broken rock in extraction of ores with sublevel caving[J].Fiz.-Tekh.Probl.Razrab.Polezn.Iskop,1996(5):12-18.
[2]张辉.基于数值模拟的大红山铁矿采场结构参数优化[D].昆明:昆明理工大学,2013.
[3]乔登攀,汪亮,张宗生.无底柱分段崩落法采场结构参数确定方法研究[J]采矿技术,2006(3):233-236+253.
[4]任风玉.随机介质放矿理论及其应用[M].北京:冶金工业出版社,1994.
[5]孙文勇,谭宝会,张志贵,等.某矿山无底柱分段崩落法矿石损失贫化原因分析[J].化工矿物与加工,2013,42(10):32-35.
[6]黄泽,盛建龙,李迅.放出漏斗形态及脊部残留矿石高度的试验研究[J].化工矿物与加工,2011,40(5):19-22.
[7]王泳嘉,刘兴国.对多漏孔放矿放出体的研究[J].东北工学院学报,1980(2):47-56.
[8]王泳嘉.放矿随机介质理论---兼评马拉霍夫的椭球体理论.东北工学院第六届科学报告会[R].1979.
[9]朱卫东,原丕业,鞠玉忠.无底柱分段崩落法结构参数优化主要途径[J].金属矿山,2000(9):12-16.
[10]金闯,董振民,范庆霞.梅山铁矿大间距结构参数研究与应用[J].金属矿山,2002(2):7-9.
[11]刘兴国.放出体基本性质及其应用[J].矿山技术,1984(1):16.
[12]李迅,盛建龙,程爱平,等.无底柱分段崩落法结构参数研究[J].化工矿物与加工,2011,40(10):21-23.
[13]Douglas C.P Physical modeling of draw bechavior of broken rock incaving[J],Colorado School of Mines Quarterly,1984,79(3).
[14]R Y.A,IA E.Selection of stope shape in sublevel caving systems[J].Journal of Mining Science,2002,38(6):596-600.
[15]S.B.Stazhevskii.Features of folw of broken rock in extraction of ores with sublevel caving[J].Fiz.-Tekh.Probl.Razrab.Polezn.Iskop,1996(5):12-18.