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·1116 工程科学学报,第37卷,第9期 一理论曲线 ·试验数据 10 8 6 0 100200300400500 图7大型三维物理模型中标志颗粒 放矿量 Fig.7 Markers in the large 3D physical model 图8放出体高度理论曲线与实验数据对比 Fig.8 Comparison between the theoretic curve and experimental da- ta for the height of the isolated extraction zone 表4式(1)系数拟合结果 Table 4 Fiting results of coefficients in Eq.(1) 实验号 ho/m mi/t c/(m-t-1) R2 3.887(0.240) 30.782(5.155) 1.362×10-2(7.204×104) 0.996 2# 4.649(0.342) 45.221(7.102) 1.253×10-2(9.506×10-4) 0.996 4.949(0.538) 70.562(12.317) 1.117×10-2(1.328×10-3) 0.996 4# 4.473(0.185) 60.249(4.446) 1.365×10-2(4.795×10-4) 0.999 5 5.417(0.206) 40.640(3.521) 1.361×10-2(5.852×10-4) 0.999 6 4.712(0.482) 61.744(11.063) 1.258×10-2(1.238×10-3) 0.996 7# 5.677(0.194) 48.680(3.382) 1.356×10-2(5.287×10-4) 0.999 8# 4.022(0.158) 56.001(4.099) 1.347×10-2(4.162×10-4) 0.999 9 5.184(0.163) 33.929(2.726) 1.534×10-2(4.810×10-4) 0.999 实际中尽量使崩落矿岩形状规则,块度均匀,有助于提 矿治工程,2004,24(1):4) 高放矿效率 4]Wang HC.Ore Drawing.Beijing:Metallurgical Industry Press, (4)散体内摩擦角越大放矿越困难,因此对于矿 1982 (王汉昌.放矿学.北京:治金工业出版社,1982) 岩内摩擦角较大的矿山,尤其需要提高放矿条件,尽量 5]Zhang Z C.Liu X C,Yu G L.Sublevel Caring Method without 避免因散体内摩擦角过大而引起的放矿速度慢、放矿 Sill Pillars in the Base of Undiluted Ore Drawing:Undiluted Ore 口堵塞等问题 Drawing Theory and Its Practice in Mine.Shenyang:Northeastern (5)放矿口尺寸越小放矿越困难,因此在生产实 University Press,2007 际允许的条件下应尽量增大放矿口尺寸. (张志贵,刘兴国,于国立.无底柱分段崩落法无贫化放矿: 无贫化放矿理论及其在矿山的实践.沈阳:东北大学出版社, 参考文献 2007) Li B.Investigation of Lave Ore Drawing and Step Optimication in Qiao D P.Research on Particle Movement Rule and Ore Drawing Chengchao Iron Mine of Wugang [Dissertation].Wuhan:Wuhan Theory DDissertation].Shenyang:Northeastern University,2003 University of Science and Technology,2012 (乔登攀散体移动规律与放矿理论研究[学位论文].沈阳: (李彬.武钢程潮铁矿采场放矿规律及放矿步距优化研究[学 东北大学,2003) 位论文].武汉:武汉科技大学,2012) ] Chen M,Zheng W Q.A study of the ore loss and dilution in bot- ] Ren F Y.Stochastic Medium Theory for Ore Drawing and its Appli- tompillar-free stepped collapse mining.South Met,2007(4):27 cation.Beijing:Metallurgical Industry Press,1994 (陈敏,郑伟强.无底柱分段崩落采矿法的损失、贫化问题探 (任凤玉.随机介质放矿理论及其应用.北京:治金工业出版 讨.南方金属,2007(4):27) 社,1994) B]Zhang ZG.Optimum structural parameters of sublevel caving and [8]Laubscher D.Cave mining:the state of the art.J South Afr Inst their determining principles.Min Metall Eng,2004,24(1):4 Min Metall,1994,94(10):2279 (张志贵.无底柱分段崩落法最优结构参数及确定准则探讨 Castro R.Study of the Mechanisms of Gravity Flow for Block Ca-工程科学学报,第 37 卷,第 9 期 图 7 大型三维物理模型中标志颗粒 Fig. 7 Markers in the large 3D physical model 图 8 放出体高度理论曲线与实验数据对比 Fig. 8 Comparison between the theoretic curve and experimental da￾ta for the height of the isolated extraction zone 表 4 式( 1) 系数拟合结果 Table 4 Fitting results of coefficients in Eq. ( 1) 实验号 h0 /m mh /t c/( m·t - 1 ) R2 1# 3. 887 ( 0. 240) 30. 782 ( 5. 155) 1. 362 × 10 - 2 ( 7. 204 × 10 - 4 ) 0. 996 2# 4. 649 ( 0. 342) 45. 221 ( 7. 102) 1. 253 × 10 - 2 ( 9. 506 × 10 - 4 ) 0. 996 3# 4. 949 ( 0. 538) 70. 562 ( 12. 317) 1. 117 × 10 - 2 ( 1. 328 × 10 - 3 ) 0. 996 4# 4. 473 ( 0. 185) 60. 249 ( 4. 446) 1. 365 × 10 - 2 ( 4. 795 × 10 - 4 ) 0. 999 5# 5. 417 ( 0. 206) 40. 640 ( 3. 521) 1. 361 × 10 - 2 ( 5. 852 × 10 - 4 ) 0. 999 6# 4. 712 ( 0. 482) 61. 744 ( 11. 063) 1. 258 × 10 - 2 ( 1. 238 × 10 - 3 ) 0. 996 7# 5. 677 ( 0. 194) 48. 680 ( 3. 382) 1. 356 × 10 - 2 ( 5. 287 × 10 - 4 ) 0. 999 8# 4. 022 ( 0. 158) 56. 001 ( 4. 099) 1. 347 × 10 - 2 ( 4. 162 × 10 - 4 ) 0. 999 9# 5. 184 ( 0. 163) 33. 929 ( 2. 726) 1. 534 × 10 - 2 ( 4. 810 × 10 - 4 ) 0. 999 实际中尽量使崩落矿岩形状规则,块度均匀,有助于提 高放矿效率. ( 4) 散体内摩擦角越大放矿越困难,因此对于矿 岩内摩擦角较大的矿山,尤其需要提高放矿条件,尽量 避免因散体内摩擦角过大而引起的放矿速度慢、放矿 口堵塞等问题. ( 5) 放矿口尺寸越小放矿越困难,因此在生产实 际允许的条件下应尽量增大放矿口尺寸. 参 考 文 献 [1] Qiao D P. Research on Particle Movement Rule and Ore Drawing Theory[Dissertation]. Shenyang: Northeastern University,2003 ( 乔登攀. 散体移动规律与放矿理论研究[学位论文]. 沈阳: 东北大学,2003) [2] Chen M,Zheng W Q. A study of the ore loss and dilution in bot￾tom-pillar-free stepped collapse mining. South Met,2007( 4) : 27 ( 陈敏,郑伟强. 无底柱分段崩落采矿法的损失、贫化问题探 讨. 南方金属,2007( 4) : 27) [3] Zhang Z G. Optimum structural parameters of sublevel caving and their determining principles. Min Metall Eng,2004,24( 1) : 4 ( 张志贵. 无底柱分段崩落法最优结构参数及确定准则探讨. 矿冶工程,2004,24( 1) : 4) [4] Wang H C. Ore Drawing. Beijing: Metallurgical Industry Press, 1982 ( 王汉昌. 放矿学. 北京: 冶金工业出版社,1982) [5] Zhang Z G,Liu X G,Yu G L. Sublevel Caving Method without Sill Pillars in the Base of Undiluted Ore Drawing: Undiluted Ore Drawing Theory and Its Practice in Mine. Shenyang: Northeastern University Press,2007 ( 张志贵,刘兴国,于国立. 无底柱分段崩落法无贫化放矿: 无贫化放矿理论及其在矿山的实践. 沈阳: 东北大学出版社, 2007) [6] Li B. Investigation of Law Ore Drawing and Step Optimization in Chengchao Iron Mine of Wugang[Dissertation]. Wuhan: Wuhan University of Science and Technology,2012 ( 李彬. 武钢程潮铁矿采场放矿规律及放矿步距优化研究[学 位论文]. 武汉: 武汉科技大学,2012) [7] Ren F Y. Stochastic Medium Theory for Ore Drawing and its Appli￾cation. Beijing: Metallurgical Industry Press,1994 ( 任凤玉. 随机介质放矿理论及其应用. 北京: 冶金工业出版 社,1994) [8] Laubscher D. Cave mining: the state of the art. J South Afr Inst Min Metall,1994,94( 10) : 2279 [9] Castro R. Study of the Mechanisms of Gravity Flow for Block Ca- ·1116·
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