超细粒级浸出渣与棒磨砂混合胶结充填强度试验研究
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摘要
为解决凡口铅锌矿超细粒级浸出渣废弃的问题,探究灰砂比、浸出渣与棒磨砂的配比、料浆浓度对充填体强度的影响。设计正交试验并进行浸出渣与棒磨砂混合胶结充填试验,得出各因素对充填体强度影响的重要性顺序,确定出最佳充填配比参数。结果表明,各因素影响充填体强度的重要性顺序为料浆浓度>灰砂比>浸出渣与棒磨砂的配比;最佳充填配比参数为灰砂比1∶4、浸出渣与棒磨砂的配比1∶6、料浆浓度77%。对不同条件下充填体强度增长规律进行分析,得出充填体强度增长规律:增大灰砂比、料浆浓度可提高充填体强度;在一定范围内,充填体强度随浸出渣用量的增加而提高;细颗粒尾砂越多,充填体水化反应时间越长;充填体强度的增长过程分为增长早期、快速增长期和增长平稳期。
In order to solve the discard problem of the super fine leaching residue in Fankou Lead Zinc Mine the affects of cement-sand ratio,ratio of leaching residue and rod milling sand,slurry concentration were investigated. The orthogonal test was designed and the mixed slag and rod matte cementation filling test was carried out. The orthogonal test was designed and the mixed slag and rod matte cementation filling test was carried out. The order of importance of each factor on the strength of the filling body was obtained,and the optimal filling ratio parameter was determined. The results show that the order of importance of the factors affecting the strength of the filling body is the slurry concentration >the cement-sand ratio > ratio of leaching residue and rod milling sand; the optimum filling ratio parameters are the cement-sand ratio 1∶ 4,the ratio of leaching residue and rod milling sand 1∶ 6 and the slurry concentration 77%. The growth law of the filling body under different conditions is analyzed,and the growth law of the filling body is obtained. Increasing the cement-sand ratio and slurry concentration can improve the strength of the filling body; within a certain range,the strength of the filling body increases with the amount of leaching slag. Increasing; the more fine-grained tailings,the longer the hydration reaction time of the filling body; the growth process of the filling body is divided into early growth period,rapid growth period and growth stationary period.
In order to solve the discard problem of the super fine leaching residue in Fankou Lead Zinc Mine the affects of cement-sand ratio,ratio of leaching residue and rod milling sand,slurry concentration were investigated. The orthogonal test was designed and the mixed slag and rod matte cementation filling test was carried out. The orthogonal test was designed and the mixed slag and rod matte cementation filling test was carried out. The order of importance of each factor on the strength of the filling body was obtained,and the optimal filling ratio parameter was determined. The results show that the order of importance of the factors affecting the strength of the filling body is the slurry concentration >the cement-sand ratio > ratio of leaching residue and rod milling sand; the optimum filling ratio parameters are the cement-sand ratio 1∶ 4,the ratio of leaching residue and rod milling sand 1∶ 6 and the slurry concentration 77%. The growth law of the filling body under different conditions is analyzed,and the growth law of the filling body is obtained. Increasing the cement-sand ratio and slurry concentration can improve the strength of the filling body; within a certain range,the strength of the filling body increases with the amount of leaching slag. Increasing; the more fine-grained tailings,the longer the hydration reaction time of the filling body; the growth process of the filling body is divided into early growth period,rapid growth period and growth stationary period.
引文
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[13]刘超,韩斌,孙伟,等.高寒地区废石破碎胶结充填体强度特性试验研究与工业应用[J].岩石力学与工程学报,2015,34(1):139-146.
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[16]任少锋,张忠辉,杨纪光,等.全尾砂与分级尾砂胶结充填强度的试验研究[J].采矿技术,2014,14(2):31-32.
[17]LIU Z X,LAN M,XIAO S Y,et al.Damage failure of cemented backfill and its reasonable match with rock mass[J].Transactions of nonferrous metals society of China,2015,25(3):954-959.
[18]FRANK L,JIANG X Y.Orthogonal design of experiments for parameter learning in image segmentation[J].Signal processing,2013,93(6):1694-1704.
[19]PATIL A A,SACHIN B S,WAKTE P S,et al.Optimozation of supercritical fluid extraction and HPLC identification of wedelolactone from wedelia calendulacea by orthogonal array design[J].Journal of advanced research,2014,5(6):629-635.
[20]吴爱祥,刘晓辉,王洪红,等.恒定剪切作用下全尾砂膏体微观结构演化特征[J].工程科学学报,2015,37(2):145-149.
[21]HUANG Z M,MA Z G,ZHANG L,et al.A numerical study of macro-mesoscopic mechanical properties of gangue backfill under biaxial compression[J].International journal of mining science and technology,2016,26(2):309-317.
[2]ZHANG Q,ZHANG J X,HUANG Y L,et al.Backfilling technology and strata behaviors in fullymechanized coal mining working face[J].International journal of minjing science and technology,2012,22(2):151-157.
[3]孙希奎,王苇.高水材料充填置换开采承压水上条带煤柱的理论研究[J].煤炭学报,2011,36(6):909-913.
[4]MICKIN K S,LOUIS B N.Dynamics of potential fill-backfill material at very small strains[J].Madhusudhan soils and foundations,2015,55(5):1196-1210.
[5]王新民,薛希龙,张钦礼,等.碎石和磷石膏联合胶结充填最佳配比及应用[J].中南大学学报(自然科学版),2015,46(10):3767-3773.
[6]董璐,高迁,南世卿,等.超细全尾砂新型胶结充填料水化机理与性能[J].中南大学学报(自然科学版),2013,44(4):1571-1577.
[7]周爱民.矿山废料胶结充填[M].北京:冶金工业出版社,2007:50-60.
[8]贺桂成,刘永,丁德馨,等.废石胶结充填体强度特性及其应用研究[J].采矿与安全工程学报,2013,30(1):74-79.
[9]翟永刚,吴爱祥,王洪红,等.全尾砂膏体充填临界质量分数[J].北京科技大学学报,2011,33(7):795-799.
[10]余海华,宋卫东,唐亚男,等.阶段空场嗣后充填法采场结构参数及充填配比优化[J].矿业研究与开发,2012,32(6):10-14.
[11]孙恒虎,段鸿杰,刘华生.应用RRSB方程模数实现尾砂级配优化的研究[J].有色金属,2004,56(1):92-95.
[12]张钦礼,李谢平,杨伟,等.基于BP网络的某矿山充填料浆配比优化[J].中南大学学报(自然科学版),2013,44(7):2868-2874.
[13]刘超,韩斌,孙伟,等.高寒地区废石破碎胶结充填体强度特性试验研究与工业应用[J].岩石力学与工程学报,2015,34(1):139-146.
[14]王新民,胡一波,王石,等.超细全尾砂充填配比优化正交试验研究[J].黄金科学技术,2015,23(3):45-49.
[15]徐文彬,潘卫东,丁明龙.胶结充填体内部微观结构演化及其长期强度模型试验[J].中南大学学报(自然科学版),2015,46(6):2333-2341.
[16]任少锋,张忠辉,杨纪光,等.全尾砂与分级尾砂胶结充填强度的试验研究[J].采矿技术,2014,14(2):31-32.
[17]LIU Z X,LAN M,XIAO S Y,et al.Damage failure of cemented backfill and its reasonable match with rock mass[J].Transactions of nonferrous metals society of China,2015,25(3):954-959.
[18]FRANK L,JIANG X Y.Orthogonal design of experiments for parameter learning in image segmentation[J].Signal processing,2013,93(6):1694-1704.
[19]PATIL A A,SACHIN B S,WAKTE P S,et al.Optimozation of supercritical fluid extraction and HPLC identification of wedelolactone from wedelia calendulacea by orthogonal array design[J].Journal of advanced research,2014,5(6):629-635.
[20]吴爱祥,刘晓辉,王洪红,等.恒定剪切作用下全尾砂膏体微观结构演化特征[J].工程科学学报,2015,37(2):145-149.
[21]HUANG Z M,MA Z G,ZHANG L,et al.A numerical study of macro-mesoscopic mechanical properties of gangue backfill under biaxial compression[J].International journal of mining science and technology,2016,26(2):309-317.