全尾砂充填料浆管道阻力损失探究及优化
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摘要
充填采矿技术因其自身的特点,在矿山领域得到了大力推广,确定合理的充填料浆配比方案和充填系统管道输送技术参数,是确保整个充填系统能够安全、高效和稳定运行的重要前提。以唐山某铁矿为例,选择灰砂比1∶8的充填料浆为试验对象,以140 mm、160 mm、180 mm、200 mm、220 mm、240 mm、260 mm为试验管道直径,分别配比浓度为68%、70%、72%、74%的充填料浆,对充填料浆管道阻力损失影响因素进行分析,并对其进行优化。研究结果表明:管道阻力损失与管径呈反比例函数关系,料浆浓度越高,管道阻力损失越大;管径增大到240 mm和260 mm时,管道底部料浆流速过快,会加速底部管道磨损;为实现矿山生产中的采充平衡,建议该矿山输送管径为200 mm或220mm,料浆输送浓度为70%。
Because of its own characteristics,the filling mining technology has been vigorously promoted in the mining field,and the determination of reasonable filling slurry ratio scheme and technical parameters of pipeline transportation in filling system is an important prerequisite to ensure the safe,efficient and stable operation of the whole filling system. Taking an iron mine in Tangshan as an example,the filling slurry with a lime-sand ratio of 1∶8 was selected as the test object,the diameters of the test pipeline 140 mm,160 mm,180 mm,200 mm,220 mm,240 mm and 260 mm,and 68%,70%,72%and 74% of the filling slurry concentration are respectively selected to analyze the factors affecting the resistance loss of the filling slurry pipeline. The results show that the pipeline resistance loss is inversely proportional to the pipe diameter,and the higher the slurry concentration,the greater the pipe resistance loss;When the pipeline diameter increases to 240 mm and260 mm,the slurry flow velocity at the bottom of the pipeline will be so rapid that the bottom pipeline is easily worn;In order to achieve the balance of mining and filling in the mine production,it is suggested that the pipe diameter of the mine be 200 mm or 220 mm,and the slurry transport concentration be 70%.
Because of its own characteristics,the filling mining technology has been vigorously promoted in the mining field,and the determination of reasonable filling slurry ratio scheme and technical parameters of pipeline transportation in filling system is an important prerequisite to ensure the safe,efficient and stable operation of the whole filling system. Taking an iron mine in Tangshan as an example,the filling slurry with a lime-sand ratio of 1∶8 was selected as the test object,the diameters of the test pipeline 140 mm,160 mm,180 mm,200 mm,220 mm,240 mm and 260 mm,and 68%,70%,72%and 74% of the filling slurry concentration are respectively selected to analyze the factors affecting the resistance loss of the filling slurry pipeline. The results show that the pipeline resistance loss is inversely proportional to the pipe diameter,and the higher the slurry concentration,the greater the pipe resistance loss;When the pipeline diameter increases to 240 mm and260 mm,the slurry flow velocity at the bottom of the pipeline will be so rapid that the bottom pipeline is easily worn;In order to achieve the balance of mining and filling in the mine production,it is suggested that the pipe diameter of the mine be 200 mm or 220 mm,and the slurry transport concentration be 70%.
引文
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[]张亮,罗涛,朱志成,等高浓度充填料浆流变特性及其管道输送阻力损失研究[J].中国矿业,2014(S2):301-304.Zhang Liang,Luo Tao,Zhu Zhicheng,et al.Study on the rheological characteristics of high-concentration filling mixture and its resistance loss in pipeline transportation[J].China Mining Magazine,2014(S2):301-304.
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[8]温震江,高谦,王忠红,等.基于FLUENT的全尾砂充填料浆输送特性模拟与分析[J].化工矿物与加工,2017(9):54-58.Wen Zhenjiang,Gao Qian,Wang Zhonghong,et al.Simulation test and analysis of full tailings filling slurry transportation characteristics based on FLUENT[J].Industrial Minerals&Processing,2017(9):54-58.
[9]胡华,孙恒虎.矿山充填工艺技术的发展及似膏体充填新技术[J].中国矿业,2001(6):49-52.Hu Hua,Sun Henghu.Development of backfill technology and the new backfill progress using paster-like material[J].China Mining Magazine,2009(6):49-52.
[10]王贤来,姚维信,王虎,等.矿山废石全尾砂充填研究现状与发展趋势[J].中国矿业,2011(9):76-79.Wang Xianlai,Yao Weixin,Wang Hu,et al.The directions of R&Don backfill with waste rock and total tailings in undergroud mine[J].China Mining Magazine,2011(9):76-79.
[11]李冬青,杨承祥,施士虎.全尾砂高浓度充填技术在深井矿山应用研究[J].金属矿山,2009(7):13-15,23.Li Dongqing,Yang Chengxiang,Shi Shihu.Research of the application of total tailing high density backfilling technology in deep underground mine[J].Metal Mine,2009(7):13-15,23.
[12]付建新,杜翠凤,宋卫东.全尾砂胶结充填体的强度敏感性及破坏机制[J].北京科技大学学报,2014(9):1149-1157.Fu Jianxin,Du Cuifeng,Song Weidong.Strength sensitivity and failure mechanism of full tailings cemented backfills[J].Journal of University of Science and Technology Beijing,2014(9):1149-1157.
[13]张钦礼,刘奇,赵建文,等.深井似膏体充填管道的输送特性[J].中国有色金属学报,2015(11):3190-3195.Zhang Qinli,Liu Qi,Zhao Jianwen,et al.Pipeline transportation characteristics of filling paste-like slurry pipeline in deep mine[J].The Chinese Journal of Nonferrous Metals,2015(11):3190-3195.
[14]张修香,乔登攀.粗骨料高浓度充填料浆的管道输送模拟及试验[J].中国有色金属学报,2015(1):258-266.Zhang Xiuxiang,Qiao Dengpa.Simulation and experiment of pipeline transportation of high density filling slurry with coarse aggregates[J].The Chinese Journal of Nonferrous Metals,2015(1):258-266.
[15]陈建宏,陈峤曦,张钦礼,等.基于Fluent的充填料浆管道输送阻力模拟[J].科技导报,2015(9):64-68.Chen Jianhong,Chen Qiaoxi,Zhang Qinli,et al.Computer simulation of filling slurry pipeline transportation using Fluent[J].Science&Technology Review,2015(9):64-68.
[2]张钦礼,姜志良,王石,等.高浓度超细全尾砂充填料浆管道输送阻力模型[J].科技导报,2014(24):51-55.Zhang Qinli,Jiang Zhiliang,Wang Shi,et al.Pipeline resistance model of the filling slurry transportation with high concentration and superfine total tailing[J].Science&Technology Review,2014(24):51-55.
[3]姚振巩.深井充填管道输送系统优化研究[J].矿业研究与开发,2008(2):7-9.Yao Zhengong.Optimizing on backfill pipeline transport system in deep mine[J].Mining Research and Development,2008(2):7-9.
[]张亮,罗涛,朱志成,等高浓度充填料浆流变特性及其管道输送阻力损失研究[J].中国矿业,2014(S2):301-304.Zhang Liang,Luo Tao,Zhu Zhicheng,et al.Study on the rheological characteristics of high-concentration filling mixture and its resistance loss in pipeline transportation[J].China Mining Magazine,2014(S2):301-304.
[5]吴迪,蔡嗣经,杨威,等.基于CFD的充填管道固液两相流输送模拟及试验[J].中国有色金属学报,2012(7):2133-2140.Wu Di,Cai Sijing,Yang Wei,et al.Simulation and experiment of backfilling pipeline transportation of solid-liquid two-phase flow based on CFD[J].The Chinese Journal of Nonferrous Metals,2012(7):2133-2140.
[6]邓代强,高永涛,杨耀亮,等.基于流体力学理论的全尾砂浆管道输送流变性能[J].北京科技大学学报,2009(11):1380-1384.Deng Daiqiang,Gao Yongtao,Yang Yaoliang,et al.Rheological properties of full tailings slurry in pipeline transportation based on the hydromechanics theory[J].Journal of University of Science and Technology Beijing,2009(11):1380-1384.
[7]张亮,罗涛,许杨东,等.高浓度充填料浆流变特性及其管道输送模拟优化研究[J].矿业研究与开发,2016(4):36-41.Zhang Liang,Luo Tao,Xu Yangdong,et al.Research on the rheological characteristics of high-concentration filling slurry and the simulation and optimization on its pipeline transportation[J].Mining Research and Development,2016(4):36-41.
[8]温震江,高谦,王忠红,等.基于FLUENT的全尾砂充填料浆输送特性模拟与分析[J].化工矿物与加工,2017(9):54-58.Wen Zhenjiang,Gao Qian,Wang Zhonghong,et al.Simulation test and analysis of full tailings filling slurry transportation characteristics based on FLUENT[J].Industrial Minerals&Processing,2017(9):54-58.
[9]胡华,孙恒虎.矿山充填工艺技术的发展及似膏体充填新技术[J].中国矿业,2001(6):49-52.Hu Hua,Sun Henghu.Development of backfill technology and the new backfill progress using paster-like material[J].China Mining Magazine,2009(6):49-52.
[10]王贤来,姚维信,王虎,等.矿山废石全尾砂充填研究现状与发展趋势[J].中国矿业,2011(9):76-79.Wang Xianlai,Yao Weixin,Wang Hu,et al.The directions of R&Don backfill with waste rock and total tailings in undergroud mine[J].China Mining Magazine,2011(9):76-79.
[11]李冬青,杨承祥,施士虎.全尾砂高浓度充填技术在深井矿山应用研究[J].金属矿山,2009(7):13-15,23.Li Dongqing,Yang Chengxiang,Shi Shihu.Research of the application of total tailing high density backfilling technology in deep underground mine[J].Metal Mine,2009(7):13-15,23.
[12]付建新,杜翠凤,宋卫东.全尾砂胶结充填体的强度敏感性及破坏机制[J].北京科技大学学报,2014(9):1149-1157.Fu Jianxin,Du Cuifeng,Song Weidong.Strength sensitivity and failure mechanism of full tailings cemented backfills[J].Journal of University of Science and Technology Beijing,2014(9):1149-1157.
[13]张钦礼,刘奇,赵建文,等.深井似膏体充填管道的输送特性[J].中国有色金属学报,2015(11):3190-3195.Zhang Qinli,Liu Qi,Zhao Jianwen,et al.Pipeline transportation characteristics of filling paste-like slurry pipeline in deep mine[J].The Chinese Journal of Nonferrous Metals,2015(11):3190-3195.
[14]张修香,乔登攀.粗骨料高浓度充填料浆的管道输送模拟及试验[J].中国有色金属学报,2015(1):258-266.Zhang Xiuxiang,Qiao Dengpa.Simulation and experiment of pipeline transportation of high density filling slurry with coarse aggregates[J].The Chinese Journal of Nonferrous Metals,2015(1):258-266.
[15]陈建宏,陈峤曦,张钦礼,等.基于Fluent的充填料浆管道输送阻力模拟[J].科技导报,2015(9):64-68.Chen Jianhong,Chen Qiaoxi,Zhang Qinli,et al.Computer simulation of filling slurry pipeline transportation using Fluent[J].Science&Technology Review,2015(9):64-68.