基于L管试验的似膏体管流水力坡度模型
|
摘要
基于Bingham流变模型和非牛顿流体力学理论,借助L管试验研究了料浆质量分数、砂灰质量比、粉煤灰质量分数对似膏体流变参数的影响,推导了似膏体充填料浆流变参数与料浆质量分数、砂灰质量比、粉煤灰质量分数的回归方程,进而构建出全尾砂似膏体管道输送水力坡度的计算模型.结果表明:似膏体管道输送水力坡度与料浆质量分数成正相关,与砂灰质量比、粉煤灰质量分数呈负相关;环管试验验证了该水力坡度计算模型平均误差为3.30%.
Based on the Bingham rheological model and the non-Newtonian fluid mechanics theory,the effects of slurry mass concentration,sand-cement ratio and fly ash content on the rheological parameters of the paste-like were studied through the L-pipe experiment.Regression equations with rheological parameters as dependent variables and slurry mass concentration,sand-cement ratio and fly ash content as independent variables was established.In addition,apipeline hydraulic gradient model of paste-like was constructed.The results show that the hydraulic gradient of paste-like correlates positively with the mass concentration of the slurry,but negatively with sand-cement ratio and fly ash content.The loop experiment proved that the average error associated with the hydraulic gradient model can be controlled within 3.30%.
Based on the Bingham rheological model and the non-Newtonian fluid mechanics theory,the effects of slurry mass concentration,sand-cement ratio and fly ash content on the rheological parameters of the paste-like were studied through the L-pipe experiment.Regression equations with rheological parameters as dependent variables and slurry mass concentration,sand-cement ratio and fly ash content as independent variables was established.In addition,apipeline hydraulic gradient model of paste-like was constructed.The results show that the hydraulic gradient of paste-like correlates positively with the mass concentration of the slurry,but negatively with sand-cement ratio and fly ash content.The loop experiment proved that the average error associated with the hydraulic gradient model can be controlled within 3.30%.
引文
[1]于润沧.我国胶结充填工艺发展的技术创新[J].中国矿山工程,2010,39(5):1-3.YU Runcang.Development and innovation of cemented filling technology in China[J].China Mine Engineering,2010,39(5):1-3.
[2]BELEM T,BENZAAZOUA M.Design and application of underground mine paste backfill technology[J].Geotechnical and Geological Engineering,2008,26(2):147-174.
[3]RANKINE R,PACHECO M,SIVAKUGAN N.Underground mining with backfills[J].Soils and Rocks,2007,30(2):93-101.
[4]SINGH C B,SANTOSH K.Underground void filling by cemented mill tailings[J].International Journal of Mining Science and Technology,2013,23(6):893-900.
[5]ERCIKDI B,CIHANGIR F,KESIMAL A,et al.Utilization of industrial waste products as pozzolanic material in cemented paste backfill of high sulphide mill tailings[J].Journal of Hazardous Materials,2009,168(2/3):848-856.
[6]王建栋,吴爱祥,王贻明,等.粗骨料膏体抗离析性能评价模型与实验研究[J].中国矿业大学学报,2016,45(5):866-872.WANG Jiandong,WU Aixiang,WANG Yiming,et al.Evaluation model and experimental study for segregation resistance of paste with coarse aggregate[J].Journal of China University of Mining&Technology,2016,45(5):866-872.
[7]王新民,古德生,张钦礼.深井矿山充填理论与管道输送技术[M].长沙:中南大学出版社,2010:163-175.WANG Xinmin,GU Desheng,ZHANG Qinli.Theory of backfilling activity and pipeline transportation technology of backfill in deep mines[M].Changsha:Central South University Press,2010:163-175.
[8]王少勇,吴爱祥,尹升华,等.膏体料浆管道输送压力损失的影响因素[J].工程科学学报,2015,37(1):7-12.WANG Shaoyong,WU Aixiang,YIN Shenghua,et al.Influence factors of pressure loss in pipeline transportation of paste slurry[J].Chinese Journal of Engineering,2015,37(1):7-12.
[9]吴爱祥,刘晓辉,王洪江,等.考虑时变性的全尾膏体管输阻力计算[J].中国矿业大学学报,2013,42(5):736-740.WU Aixiang,LIU Xiaohui,WANG Hongjiang,et al.Calculation of resistance in total tailings paste piping transportation based on time-varying behavior[J].Journal of China University of Mining&Technology,2013,42(5):736-740.
[10]王继红,张腾飞,王树刚,等.水平管道内固液两相流流动特性的CFD模拟[J].化工学报,2011,62(12):3399-3404.WANG Jihong,ZHANG Tengfei,WANG Shugang,et al.Numerical simulation of liquid-solid slurry flow in horizontal pipeline[J].CIESC Journal,2011,62(12):3399-3404.
[11]COWPER S N T,COWPER J N T,THOMAS A D.Slurry pipelines:Past,present and future[J].Australian Journal of Multi-disciplinary Engineering,2009,7(2):189-196.
[12]吴爱祥,王洪江.金属矿膏体充填理论与技术[M].北京:科学出版社,2015:263-288.WU Aixiang,WANG Hongjiang.Paste filling theory and technology of metal mine[M].Beijing:Science Press,2015:263-288.
[13]刘超.基于环管输送试验的全尾砂膏体充填料流变特性研究[D].衡阳:南华大学,2011:9-21.LIU Chao.Research on rheological properties of paste filling based on loop transmission test[D].Hengyang:University of South China,2011:9-21.
[14]蔡嗣经,黄刚,吴迪,等.尾砂充填料浆流变性能模型与试验研究[J].东北大学学报(自然科学版),2015,36(6):882-886.CAI Sijing,HUANG Gang,WU Di,et al.Experimental and modeling study on the rheological properties of tailings backfill[J].Journal of Northeastern University(Natural Science),2015,36(6):882-886.
[15]吴爱祥,程海勇,王贻明,等.考虑管壁滑移效应膏体管道的输送阻力特性[J].中国有色金属学报,2016,26(1):180-187.WU Aixiang,CHENG Haiyong,WANG Yiming,et al.Transport resistance characteristic of paste pipeline considering effect of wall slip[J].The Chinese Journal of Nonferrous Metals,2016,26(1):180-187.
[16]SAAK A W,JENNINGS H M,SHAH S P.The influence of wall slip on yield stress and viscoelastic measurements of cement paste[J].Cement&Concrete Research,2001,31(2):205-212.
[17]李公成,王洪江,吴爱祥,等.基于倾斜管实验的膏体自流输送规律[J].中国有色金属学报,2014,24(12):3162-3164.LI Gongcheng,WANG Hongjiang,WU Aixiang,et al.Gravity transport law of paste based on inclined pipe experiment[J].The Chinese Journal of Nonferrous Metals,2014,24(12):3162-3164.
[18]CHEN Xin,ZHOU Jian,CHEN Qiusong,et al.CFDsimulation of pipeline transport properties of mine tailings three-phase foam slurry backfill[J].Minerals,2017,7(8):149.
[19]GOPALA V R,NIJEHOLT J A L,BAKKER P,et al.Development and validation of a CFD model predicting the backfill process of a nuclear waste gallery[J].Nuclear Engineering&Design,2011,241(7):2508-2518.
[20]张钦礼,王石,王新民,等.不同质量分数下阴离子型聚丙烯酰胺对似膏体流变参数的影响[J].中国有色金属学报,2016,26(8):1794-1801.ZHANG Qinli,WANG Shi,WANG Xinmin,et al.Influence of anionic polyacrylamide on rheological parameters of paste-like slurry under different mass concentrations[J].The Chinese Journal of Nonferrous Metals,2016,26(8):1794-1801.
[21]黄玉诚.矿山充填理论与技术[M].北京:冶金工业出版社,2014:84-87.HUANG Yucheng.Mine filling theory and technology[M].Beijing:Metallurgical Industry Press,2014:84-87.
[22]HUANG Yucheng,SUN Henghu.Experimental study on the mechanical properties of paste-like fill material[J].International Journal of Mining Science and Technology,2004,14(2):107-110.
[23]SUI W,ZHANG D,CUI Z C,et al.Environmental implications of mitigating overburden failure and subsidences using paste-like backfill mining:A case study[J].International Journal of Surface Mining Reclamation&Environment,2015,29(6):521-543.
[24]WANG Xinmin,ZHAO Bin,ZHANG Chuanshu,et al.Paste-like self-flowing transportation backfilling technology based on coal gangue[J].Mining Science and Technology,2009,19(2):137-143.
[25]陈秋松,张钦礼,王新民,等.全尾砂似膏体管输水力坡度计算模型研究[J].中国矿业大学学报,2016,45(5):901-906.CHEN Qiusong,ZHANG Qinli,WANG Xinmin,et al.Pipeline hydraulic gradient model of paste-like unclassified tailings backfill slurry[J].Journal of China University of Mining&Technology,2016,45(5):901-906.
[2]BELEM T,BENZAAZOUA M.Design and application of underground mine paste backfill technology[J].Geotechnical and Geological Engineering,2008,26(2):147-174.
[3]RANKINE R,PACHECO M,SIVAKUGAN N.Underground mining with backfills[J].Soils and Rocks,2007,30(2):93-101.
[4]SINGH C B,SANTOSH K.Underground void filling by cemented mill tailings[J].International Journal of Mining Science and Technology,2013,23(6):893-900.
[5]ERCIKDI B,CIHANGIR F,KESIMAL A,et al.Utilization of industrial waste products as pozzolanic material in cemented paste backfill of high sulphide mill tailings[J].Journal of Hazardous Materials,2009,168(2/3):848-856.
[6]王建栋,吴爱祥,王贻明,等.粗骨料膏体抗离析性能评价模型与实验研究[J].中国矿业大学学报,2016,45(5):866-872.WANG Jiandong,WU Aixiang,WANG Yiming,et al.Evaluation model and experimental study for segregation resistance of paste with coarse aggregate[J].Journal of China University of Mining&Technology,2016,45(5):866-872.
[7]王新民,古德生,张钦礼.深井矿山充填理论与管道输送技术[M].长沙:中南大学出版社,2010:163-175.WANG Xinmin,GU Desheng,ZHANG Qinli.Theory of backfilling activity and pipeline transportation technology of backfill in deep mines[M].Changsha:Central South University Press,2010:163-175.
[8]王少勇,吴爱祥,尹升华,等.膏体料浆管道输送压力损失的影响因素[J].工程科学学报,2015,37(1):7-12.WANG Shaoyong,WU Aixiang,YIN Shenghua,et al.Influence factors of pressure loss in pipeline transportation of paste slurry[J].Chinese Journal of Engineering,2015,37(1):7-12.
[9]吴爱祥,刘晓辉,王洪江,等.考虑时变性的全尾膏体管输阻力计算[J].中国矿业大学学报,2013,42(5):736-740.WU Aixiang,LIU Xiaohui,WANG Hongjiang,et al.Calculation of resistance in total tailings paste piping transportation based on time-varying behavior[J].Journal of China University of Mining&Technology,2013,42(5):736-740.
[10]王继红,张腾飞,王树刚,等.水平管道内固液两相流流动特性的CFD模拟[J].化工学报,2011,62(12):3399-3404.WANG Jihong,ZHANG Tengfei,WANG Shugang,et al.Numerical simulation of liquid-solid slurry flow in horizontal pipeline[J].CIESC Journal,2011,62(12):3399-3404.
[11]COWPER S N T,COWPER J N T,THOMAS A D.Slurry pipelines:Past,present and future[J].Australian Journal of Multi-disciplinary Engineering,2009,7(2):189-196.
[12]吴爱祥,王洪江.金属矿膏体充填理论与技术[M].北京:科学出版社,2015:263-288.WU Aixiang,WANG Hongjiang.Paste filling theory and technology of metal mine[M].Beijing:Science Press,2015:263-288.
[13]刘超.基于环管输送试验的全尾砂膏体充填料流变特性研究[D].衡阳:南华大学,2011:9-21.LIU Chao.Research on rheological properties of paste filling based on loop transmission test[D].Hengyang:University of South China,2011:9-21.
[14]蔡嗣经,黄刚,吴迪,等.尾砂充填料浆流变性能模型与试验研究[J].东北大学学报(自然科学版),2015,36(6):882-886.CAI Sijing,HUANG Gang,WU Di,et al.Experimental and modeling study on the rheological properties of tailings backfill[J].Journal of Northeastern University(Natural Science),2015,36(6):882-886.
[15]吴爱祥,程海勇,王贻明,等.考虑管壁滑移效应膏体管道的输送阻力特性[J].中国有色金属学报,2016,26(1):180-187.WU Aixiang,CHENG Haiyong,WANG Yiming,et al.Transport resistance characteristic of paste pipeline considering effect of wall slip[J].The Chinese Journal of Nonferrous Metals,2016,26(1):180-187.
[16]SAAK A W,JENNINGS H M,SHAH S P.The influence of wall slip on yield stress and viscoelastic measurements of cement paste[J].Cement&Concrete Research,2001,31(2):205-212.
[17]李公成,王洪江,吴爱祥,等.基于倾斜管实验的膏体自流输送规律[J].中国有色金属学报,2014,24(12):3162-3164.LI Gongcheng,WANG Hongjiang,WU Aixiang,et al.Gravity transport law of paste based on inclined pipe experiment[J].The Chinese Journal of Nonferrous Metals,2014,24(12):3162-3164.
[18]CHEN Xin,ZHOU Jian,CHEN Qiusong,et al.CFDsimulation of pipeline transport properties of mine tailings three-phase foam slurry backfill[J].Minerals,2017,7(8):149.
[19]GOPALA V R,NIJEHOLT J A L,BAKKER P,et al.Development and validation of a CFD model predicting the backfill process of a nuclear waste gallery[J].Nuclear Engineering&Design,2011,241(7):2508-2518.
[20]张钦礼,王石,王新民,等.不同质量分数下阴离子型聚丙烯酰胺对似膏体流变参数的影响[J].中国有色金属学报,2016,26(8):1794-1801.ZHANG Qinli,WANG Shi,WANG Xinmin,et al.Influence of anionic polyacrylamide on rheological parameters of paste-like slurry under different mass concentrations[J].The Chinese Journal of Nonferrous Metals,2016,26(8):1794-1801.
[21]黄玉诚.矿山充填理论与技术[M].北京:冶金工业出版社,2014:84-87.HUANG Yucheng.Mine filling theory and technology[M].Beijing:Metallurgical Industry Press,2014:84-87.
[22]HUANG Yucheng,SUN Henghu.Experimental study on the mechanical properties of paste-like fill material[J].International Journal of Mining Science and Technology,2004,14(2):107-110.
[23]SUI W,ZHANG D,CUI Z C,et al.Environmental implications of mitigating overburden failure and subsidences using paste-like backfill mining:A case study[J].International Journal of Surface Mining Reclamation&Environment,2015,29(6):521-543.
[24]WANG Xinmin,ZHAO Bin,ZHANG Chuanshu,et al.Paste-like self-flowing transportation backfilling technology based on coal gangue[J].Mining Science and Technology,2009,19(2):137-143.
[25]陈秋松,张钦礼,王新民,等.全尾砂似膏体管输水力坡度计算模型研究[J].中国矿业大学学报,2016,45(5):901-906.CHEN Qiusong,ZHANG Qinli,WANG Xinmin,et al.Pipeline hydraulic gradient model of paste-like unclassified tailings backfill slurry[J].Journal of China University of Mining&Technology,2016,45(5):901-906.