基于PFC的无底柱分段崩落法崩矿步距优化
|
摘要
近年来,无底柱分段崩落法在地下铁矿山的开采中大量应用,采场结构参数不断增大,为了符合散体流动规律,提高回采指标,崩矿步距的优化尤其重要。本文结合梅山铁矿无底柱分段崩落法生产实践,采用PFC3D软件建立了放矿模型,并编制了相应的FISH程序,来控制矿岩颗粒的流动。对初步设计的6组崩矿步距方案进行模拟,得出在18m×20m采场结构参数条件下,最优的崩矿步距为2.2m。经过现场工业试验验证,2.2m崩矿步距下回采率和贫化率指标提升效果显著。
In recent years,the non-pillar sublevel caving method has been applied in underground iron mines widely,and the size parameters of the stope are increasing.In order to comply with the law of ore-drawing and improve the economic index of mining,the optimization of the blast rings space is especially important.In this paper,combined with the production practice of the non-pillar sublevel caving method used in Meishan iron mine,the PFC3 Dsoftware was used to establish the ore-drawing model,and the corresponding FISH program was compiled to control the flow of the ore particles.The preliminary design of the six sets of blast rings space was simulated,and the optimum blast rings space was 2.2 munder the condition of 18 m×20 m stope size parameters.It has been verified by on-site industrial tests that the recovery rate and depletion rate of the optimum blast rings space are significantly improved.
In recent years,the non-pillar sublevel caving method has been applied in underground iron mines widely,and the size parameters of the stope are increasing.In order to comply with the law of ore-drawing and improve the economic index of mining,the optimization of the blast rings space is especially important.In this paper,combined with the production practice of the non-pillar sublevel caving method used in Meishan iron mine,the PFC3 Dsoftware was used to establish the ore-drawing model,and the corresponding FISH program was compiled to control the flow of the ore particles.The preliminary design of the six sets of blast rings space was simulated,and the optimum blast rings space was 2.2 munder the condition of 18 m×20 m stope size parameters.It has been verified by on-site industrial tests that the recovery rate and depletion rate of the optimum blast rings space are significantly improved.
引文
[1]余健,刘培慧,寇永渊.高分段大间距结构合理崩矿步距研究[J].矿业研究与开发,2008(6):10-12,26.YU Jian,LIU Peihui,KOU Yongyuan.Study on reasonable caving space for pillarless sublevel caving with high sublevel and large drive interval[J].Mining Research and Development,2008(6):10-12,26.
[2]丁航行,任凤玉.大结构参数无底柱分段崩落法的发展及设备需求[J].中国矿业,2012,21(10):109-111.DING Hangxing,REN Fengyu.The development and equipment requirement of sublevel caving with large structural parameters[J].China Mining Magazine,2012,21(10):109-111.
[3]郭进平,王小林,汪朝,等.基于相似物理实验的崩矿步距优化研究[J].矿业研究与开发,2017,37(2):66-69.GUO Jinping,WANG Xiaolin,WANG Chao,et al.Optimization research on independent advance of OREbreaking based on the similar physical experiment[J].Mining Research and Development,2017,37(2):66-69.
[4]孙浩,金爱兵,高永涛,等.期望体理论的实验研究及端部放矿崩矿步距优化[J].工程科学学报,2016,38(9):1197-1203.SUN Hao,JIN Aibing,GAO Yongtao,et al.Experimental research on the expectation body theory and optimization of the rate of advance during ore breaking in side drawing[J].Chinese Journal of Engineering,2016,38(9):1197-1203.
[5]余健,朱飞.基于未确知测度理论的崩矿步距优选模型[J].科技导报,2013,31(35):28-32.YU Jian,ZHU Fei.Breaking interval preferred model based on uncertainty measurement theory[J].Science&Technology Review,2013,31(35):28-32.
[6]李文增,任凤玉.弓长岭井下铁矿崩矿步距优化研究[J].中国矿业,2008,17(6):55-57.LI Wenzeng,REN Fengyu.Optimization of the independent advance of ore breaking Gongchangling iron mine[J].China Mining Magazine,2008,17(6):55-57.
[7]何荣兴,任凤玉,宋德林,等.无底柱分段崩落法崩矿步距优化方法及应用[J].矿业研究与开发,2015,35(8):1-4.HE Rongxing,REN Fengyu,SONG Delin,et al.Optimization and application on caving space of non-pillar sublevel caving method[J].Mining Research and Development,2015,35(8):1-4.
[8]金爱兵,孙浩,孟新秋,等.无底柱分段崩落法不同放矿方式下崩矿步距研究[J].中南大学学报:自然科学版,2017,48(11):3037-3043.JIN Aibing,SUN Hao,MENG Xinqiu,et al.Study of best caving steps under different ore methods of sublevel caving[J].Journal of Central South University:Science and Technology,2017,48(11):3037-3043.
[9]王云鹏,余健.无底柱分段崩落法崩矿步距的优化[J].中南大学学报:自然科学版,2014,45(2):603-608.WANG Yunpeng,YU Jian.Optimization of breaking interval in non-pillar sublevel caving mining[J].Journal of Central South University:Science and Technology,2014,45(2):603-608.
[10]李萍,柯波,赵菲.小东沟钼矿最优崩矿步距研究[J].爆破,2013,30(2):67-72.LI Ping,KE Bo,ZHAO Fei.Study on optimal caving pace for Xiaodonggou molybdenum ore[J].Blasting,2013,30(2):67-72.
[11]罗正泥.大红山铁矿采场合理崩矿步距和爆破参数的试验研究[J].云南冶金,2008(4):3-6,9.LUO Zhengni.Study on the tests of rational independent advance of ore breaking and blasting parameters in Dahongshan iron mine[J].Yunnan Metallurgy,2008(4):3-6,9.
[12]吴荣高,安龙,江学,等.梅山铁矿大结构参数下合理崩矿步距研究[J].金属矿山,2012(5):5-8,12.WU Ronggao,AN Long,JIANG Xue,et al.Study on reasonable caving space for Meishan iron mine with large structural parameters[J].Metal Mine,2012(5):5-8,12.
[13]董振民,俞胜建.梅山铁矿无底柱分段崩落法崩矿步距研究[J].金属矿山,2001(5):11-12,41.DONG Zhenmin,YU Shengjian.Study on the independent advance of ore breaking in sublevel caving in Meishan iron mine[J].Metal Mine,2001(5):11-12,41.
[14]范庆霞.梅山铁矿采场崩矿步距的探讨[J].金属矿山,2007(9):24-27.FAN Qingxia.Discussion on caving space in Meishan underground iron mine[J].Metal Mine,2007(9):24-27.
[15]ITASCA公司.PFC简介[EB/OL].[2018-09-10].http:∥www.itasca.cn/node/7518.
[2]丁航行,任凤玉.大结构参数无底柱分段崩落法的发展及设备需求[J].中国矿业,2012,21(10):109-111.DING Hangxing,REN Fengyu.The development and equipment requirement of sublevel caving with large structural parameters[J].China Mining Magazine,2012,21(10):109-111.
[3]郭进平,王小林,汪朝,等.基于相似物理实验的崩矿步距优化研究[J].矿业研究与开发,2017,37(2):66-69.GUO Jinping,WANG Xiaolin,WANG Chao,et al.Optimization research on independent advance of OREbreaking based on the similar physical experiment[J].Mining Research and Development,2017,37(2):66-69.
[4]孙浩,金爱兵,高永涛,等.期望体理论的实验研究及端部放矿崩矿步距优化[J].工程科学学报,2016,38(9):1197-1203.SUN Hao,JIN Aibing,GAO Yongtao,et al.Experimental research on the expectation body theory and optimization of the rate of advance during ore breaking in side drawing[J].Chinese Journal of Engineering,2016,38(9):1197-1203.
[5]余健,朱飞.基于未确知测度理论的崩矿步距优选模型[J].科技导报,2013,31(35):28-32.YU Jian,ZHU Fei.Breaking interval preferred model based on uncertainty measurement theory[J].Science&Technology Review,2013,31(35):28-32.
[6]李文增,任凤玉.弓长岭井下铁矿崩矿步距优化研究[J].中国矿业,2008,17(6):55-57.LI Wenzeng,REN Fengyu.Optimization of the independent advance of ore breaking Gongchangling iron mine[J].China Mining Magazine,2008,17(6):55-57.
[7]何荣兴,任凤玉,宋德林,等.无底柱分段崩落法崩矿步距优化方法及应用[J].矿业研究与开发,2015,35(8):1-4.HE Rongxing,REN Fengyu,SONG Delin,et al.Optimization and application on caving space of non-pillar sublevel caving method[J].Mining Research and Development,2015,35(8):1-4.
[8]金爱兵,孙浩,孟新秋,等.无底柱分段崩落法不同放矿方式下崩矿步距研究[J].中南大学学报:自然科学版,2017,48(11):3037-3043.JIN Aibing,SUN Hao,MENG Xinqiu,et al.Study of best caving steps under different ore methods of sublevel caving[J].Journal of Central South University:Science and Technology,2017,48(11):3037-3043.
[9]王云鹏,余健.无底柱分段崩落法崩矿步距的优化[J].中南大学学报:自然科学版,2014,45(2):603-608.WANG Yunpeng,YU Jian.Optimization of breaking interval in non-pillar sublevel caving mining[J].Journal of Central South University:Science and Technology,2014,45(2):603-608.
[10]李萍,柯波,赵菲.小东沟钼矿最优崩矿步距研究[J].爆破,2013,30(2):67-72.LI Ping,KE Bo,ZHAO Fei.Study on optimal caving pace for Xiaodonggou molybdenum ore[J].Blasting,2013,30(2):67-72.
[11]罗正泥.大红山铁矿采场合理崩矿步距和爆破参数的试验研究[J].云南冶金,2008(4):3-6,9.LUO Zhengni.Study on the tests of rational independent advance of ore breaking and blasting parameters in Dahongshan iron mine[J].Yunnan Metallurgy,2008(4):3-6,9.
[12]吴荣高,安龙,江学,等.梅山铁矿大结构参数下合理崩矿步距研究[J].金属矿山,2012(5):5-8,12.WU Ronggao,AN Long,JIANG Xue,et al.Study on reasonable caving space for Meishan iron mine with large structural parameters[J].Metal Mine,2012(5):5-8,12.
[13]董振民,俞胜建.梅山铁矿无底柱分段崩落法崩矿步距研究[J].金属矿山,2001(5):11-12,41.DONG Zhenmin,YU Shengjian.Study on the independent advance of ore breaking in sublevel caving in Meishan iron mine[J].Metal Mine,2001(5):11-12,41.
[14]范庆霞.梅山铁矿采场崩矿步距的探讨[J].金属矿山,2007(9):24-27.FAN Qingxia.Discussion on caving space in Meishan underground iron mine[J].Metal Mine,2007(9):24-27.
[15]ITASCA公司.PFC简介[EB/OL].[2018-09-10].http:∥www.itasca.cn/node/7518.