铲入深度对无底柱分段崩落法放出体形态的影响
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摘要
崩落体、放出体和崩矿步距之间的相互制约关系影响着无底柱分段崩落法放矿过程中的损失贫化。以大结构参数单进路放矿试验为基础,进行了3.6 m崩矿步距条件下5种不同铲入深度的物理模拟放矿试验。通过放出标志颗粒的位置信息获取内部滑移面的位置,研究了铲入深度对放出体发育形态的影响,并分析了铲入深度与放出体之间的关系以及放出体与崩矿步距的匹配关系。结果表明:①3.6 m崩矿步距、5种不同铲入深度条件下,沿进路方向放出体发育的轮廓都大于崩落体的轮廓;②铲入深度对放出体形态的发育有一定影响,放出体发育高度随铲入深度增大呈先增加后减小的趋势,放出体沿进路方向的发育宽度呈增加趋势,从纯矿石回收量、矿石回收率方面分析,铲入深度为5.32 m较好,相应的回收率为57.74%。
The loss and dilution in the ore drawing process of non-pillar sublevel caving method is influenced by the mutual restrictive relations among caved orebody,drawn-out body and caving pace.Based on the large structure parameter with a single drawing drift,physical simulation test with five different shovel depths under 3.6 m caving pace are carried out.The position of the sliding surface is obtained by the position information of the drawn-out marker particles,effects of the shoveling depth on the development form of the drawn-out body is studied,and the relationship between shovel depth and drawn-out body and the matching relationship between draw body and caving pace are analyzed.The results show that:①the maximum outline of drawn-out body along the drifting direction is larger than that of the caving body under the caving pace of 3.6 m and5 different shoveling depths;②the shoveling depth has a certain influence on the development of the shape of drawn-out body,the height of drawn-out body increases first and then decreases with the increase of the shoveling depth,the width of drawn-out body along the drifting direction is increased,based on the analysis of pure ore recovery amount and ore recovery rate,the ideal shoveling depth is 5.32 m,and the corresponding recovery rate is 57.74%.
The loss and dilution in the ore drawing process of non-pillar sublevel caving method is influenced by the mutual restrictive relations among caved orebody,drawn-out body and caving pace.Based on the large structure parameter with a single drawing drift,physical simulation test with five different shovel depths under 3.6 m caving pace are carried out.The position of the sliding surface is obtained by the position information of the drawn-out marker particles,effects of the shoveling depth on the development form of the drawn-out body is studied,and the relationship between shovel depth and drawn-out body and the matching relationship between draw body and caving pace are analyzed.The results show that:①the maximum outline of drawn-out body along the drifting direction is larger than that of the caving body under the caving pace of 3.6 m and5 different shoveling depths;②the shoveling depth has a certain influence on the development of the shape of drawn-out body,the height of drawn-out body increases first and then decreases with the increase of the shoveling depth,the width of drawn-out body along the drifting direction is increased,based on the analysis of pure ore recovery amount and ore recovery rate,the ideal shoveling depth is 5.32 m,and the corresponding recovery rate is 57.74%.
引文
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[12]陈小伟,明世祥.崩落法开采中进路宽度对放出体形态的影响研究[J].金属矿山,2009(S1):246-249.Chen Xiaowei,Ming Shixiang.Study of the influence of the shapes of draw bodies with different widths of drift in caving method[J].Metal Mine,2009(S1):246-249.
[13]陈小伟,崔传杰.不同端壁倾角对放矿指标的影响研究[J].中国矿山工程,2016,45(1):78-82.Chen Xiaowei,Cui Chuanjie.Study on the influence of different front inclination on draw index[J].China Mining Engineering,2016,45(1):78-82.
[14]路增祥,常贯峰,宫国慧.铲入深度对无底柱分段崩落法放矿效果的影响[J].中国矿业,2018,27(6):90-94.Lu Zengxiang,Chang Guanfeng,Gong Guohui.The effect of shovel depth on the ore drawing of non-pillar sublevel caving method[J].China Mining Magazine,2018,27(6):90-94.
[15]常贯峰,路增祥.无底柱分段崩落法放矿铲入深度与崩矿步距的关系[J].金属矿山,2018(7):19-24.Chang Guanfeng,Lu Zengxiang.Relationship between the shoveling depth and the caving space of ore drawing with non-pillar sublevel caving method[J].Metal Mine,2018(7):19-24.
[16]邵安林.端部放矿废石移动规律及控制技术[M].北京:冶金工业出版社,2013.Shao Anlin.Movement Law and Control Technology of Waste Rock in End Drawing[M].Beijing:Metallurgical Industry Press,2013.
[17]孙东东,张治强,常帅,等.大结构参数无底柱分段崩落法结构参数优化研究[J].中国矿业,2018,27(1):105-108.Sun Dongdong,Zhang Zhiqiang,Chang Shuai,et al.Optimization research on structural parameters in non-pillar sublevel caving method with large structural parameters[J].China Mining Magazine,2018,27(1):105-108.
[18]常贯峰.铲入深度对无底柱分段崩落法放矿效果影响的实验研究[D].鞍山:辽宁科技大学,2018.Chang Guanfeng.Experimental Study on Effect of Shoveling Depth on Ore Drawing Effects of Non-pillar Sublevel Caving Method[D].Anshan:University of Science and Technology Liaoning,2018.
[19]张国建,李广辉.一种确定无底柱分段崩落法崩落体形态的方法:201610589818.0[P].2016-12-21.Zhang Guojian,Li Guanghui.A method for determining the shape of caving body in non-pillar sublevel caving method:201610589818.0[P].2016-12-21.
[20]任凤玉.随机介质放矿理论及其应用[M].北京:冶金工业出版社,1994.Ren Fengyu.Drawing Theory of Random Medium and Its Application[M].Beijing:Metallurgical Industry Press,1994.
[2]张国建,翟会超.无底柱分段崩落法放出体、松动体、崩落体三者关系模型[J].中国矿业,2010,19(3):69-71.Zhang Guojian,Zhai Huichao.The relational model of draw body,loosened ore body,caved ore body in non-pillar sublevel caving[J].China Mining Magazine,2010,19(3):69-71.
[]张国建,郭连军矿石崩落体形态与放矿效果的关系研究[]中国矿业,2001,10(5):31-33.Zhang Guojian,Guo Lianjun.Relationship between shape form of caved down ore and effectiveness of ore drawing[J].China Mining Magazine,2001,10(5):31-33.
[4]陶干强,任凤玉,李清望.基于神经网络的放出体形态研究[J].中国矿业,2002,11(4):49-51.Tao Ganqiang,Ren Fengyu,Li Qingwang.Application of functionlinkage neural network to analysis of shape of ore-rock mass drawn down[J].China Mining Magazine,2002,11(4):49-51.
[5]原丕业,赵金先,鞠玉忠,等.无底柱分段崩落法大间距结构参数研究[J].金属矿山,2004(6):5-8.Yuan Piye,Zhao Jinxian,Ju Yuzhong,et al.Study on large-space structural parameters of pillarless sublevel caving[J].Metal Mine,2004(6):5-8.
[6]孙明志,任凤玉,丁航行,等.无底柱分段崩落法工业放出体的RFID技术测定方法[J].金属矿山,2017(3):15-18.Sun Mingzhi,Ren Fengyu,Ding Hangxing,et al.Determination method of RFID technology of industrial drawn ore-body of non-pillar sublevel caving method[J].Metal Mine,2017(3):15-18.
[7]孙浩,金爱兵,高永涛,等.崩落法采矿中放出体流动特性的影响因素[J].工程科学学报,2015,37(9):1111-1117.Sun Hao,Jin Aibing,Gao Yongtao,et al.Influencing factors on the flow characteristics of an isolated extraction zone in caving mining[J].Chinese Journal of Engineering,2015,37(9):1111-1117.
[8]常帅,李楠,张国建,等.无底柱分段崩落法崩落体形态的研究现状与展望[J].金属矿山,2018(11):1-6.Chang Shuai,Li Nan,Zhang Guojian,et al.Research status and prospects of the caved ore-body sharp in pillarles sublevels caving method[J].Metal Mine,2018(11):1-6.
[9]李广辉.崩落体形态模型建立与数值模拟[D].鞍山:辽宁科技大学,2017.Li Guanghui.Mathematical Model of Caving Body and Computer Simulation[D].Anshan:University of Science and Technology Liaoning,2017.
[10]刘娜,任凤玉,何荣兴,等.无底柱分段崩落法损失贫化细部控制方法研究[J].金属矿山,2016(11):10-15.Liu Na,Ren Fengyu,He Rongxing,et al.Approach of ore loss and dilution control in sublevel caving method[J].Metal Mine,2016(11):10-15.
[11]孟凡展.无底柱分段崩落法放出体形态研究[D].鞍山:辽宁科技大学,2015.Meng Fanzhan.Study on Shape of Drawn out Body in Non-pillar Sublevel Caving Method[D].Anshan:University of Science and Technology Liaoning,2015.
[12]陈小伟,明世祥.崩落法开采中进路宽度对放出体形态的影响研究[J].金属矿山,2009(S1):246-249.Chen Xiaowei,Ming Shixiang.Study of the influence of the shapes of draw bodies with different widths of drift in caving method[J].Metal Mine,2009(S1):246-249.
[13]陈小伟,崔传杰.不同端壁倾角对放矿指标的影响研究[J].中国矿山工程,2016,45(1):78-82.Chen Xiaowei,Cui Chuanjie.Study on the influence of different front inclination on draw index[J].China Mining Engineering,2016,45(1):78-82.
[14]路增祥,常贯峰,宫国慧.铲入深度对无底柱分段崩落法放矿效果的影响[J].中国矿业,2018,27(6):90-94.Lu Zengxiang,Chang Guanfeng,Gong Guohui.The effect of shovel depth on the ore drawing of non-pillar sublevel caving method[J].China Mining Magazine,2018,27(6):90-94.
[15]常贯峰,路增祥.无底柱分段崩落法放矿铲入深度与崩矿步距的关系[J].金属矿山,2018(7):19-24.Chang Guanfeng,Lu Zengxiang.Relationship between the shoveling depth and the caving space of ore drawing with non-pillar sublevel caving method[J].Metal Mine,2018(7):19-24.
[16]邵安林.端部放矿废石移动规律及控制技术[M].北京:冶金工业出版社,2013.Shao Anlin.Movement Law and Control Technology of Waste Rock in End Drawing[M].Beijing:Metallurgical Industry Press,2013.
[17]孙东东,张治强,常帅,等.大结构参数无底柱分段崩落法结构参数优化研究[J].中国矿业,2018,27(1):105-108.Sun Dongdong,Zhang Zhiqiang,Chang Shuai,et al.Optimization research on structural parameters in non-pillar sublevel caving method with large structural parameters[J].China Mining Magazine,2018,27(1):105-108.
[18]常贯峰.铲入深度对无底柱分段崩落法放矿效果影响的实验研究[D].鞍山:辽宁科技大学,2018.Chang Guanfeng.Experimental Study on Effect of Shoveling Depth on Ore Drawing Effects of Non-pillar Sublevel Caving Method[D].Anshan:University of Science and Technology Liaoning,2018.
[19]张国建,李广辉.一种确定无底柱分段崩落法崩落体形态的方法:201610589818.0[P].2016-12-21.Zhang Guojian,Li Guanghui.A method for determining the shape of caving body in non-pillar sublevel caving method:201610589818.0[P].2016-12-21.
[20]任凤玉.随机介质放矿理论及其应用[M].北京:冶金工业出版社,1994.Ren Fengyu.Drawing Theory of Random Medium and Its Application[M].Beijing:Metallurgical Industry Press,1994.