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黄金科学技术 ›› 2020, Vol. 28 ›› Issue (1): 90-96.doi: 10.11872/j.issn.1005-2518.2020.01.028

• 采选技术与矿山管理 • 上一篇    下一篇

基于Buckingham方程的大倍线充填料浆输送优化与应用

李宗楠1,2,3(),罗皖东4,郭利杰2,3(),许文远2,3   

  1. 1.北京科技大学土木与资源工程学院,北京 100083
    2.北京矿冶科技集团有限公司,北京 100160
    3.国家金属矿绿色开采国际联合研究中心,北京 100260
    4.铜陵有色金属集团股份有限公司安庆铜矿,安徽 安庆 246131
  • 收稿日期:2019-04-01 修回日期:2019-09-10 出版日期:2020-02-29 发布日期:2020-02-26
  • 通讯作者: 郭利杰 E-mail:lizongnanbgrimm@163.com;ljguo264@126.com
  • 作者简介:李宗楠(1985-),男,贵州六盘水人,博士研究生,高级工程师,从事矿山充填技术领域的研究工作。lizongnanbgrimm@163.com
  • 基金资助:
    国家重点研发计划项目“深部金属矿协同开采理论与技术”(2016YFC0600709);北京矿冶科技集团有限公司科研基金项目“大体积充填体爆破响应机理及其损伤模型”(02-1911)

Optimization and Application for Slurry Transportation in Large Fill-times-line Based on Buckingham Equation

Zongnan LI1,2,3(),Wandong LUO4,Lijie GUO2,3(),Wenyuan XU2,3   

  1. 1.School of Civil and Resources Engineering,University of Science and Technology Beijing, Beijing 100083,China
    2.Beijing General Research Institute of Mining and Metallurgy Technology Group,Beijing 100160,China
    3.National Center for International Joint Research on Green Metal Mining,Beijing 100260,China
    4.Anqing Copper Mine,Tongling Nonferrous Metals Group Co. ,Ltd. ,Anqing 246131,Anhui,China
  • Received:2019-04-01 Revised:2019-09-10 Online:2020-02-29 Published:2020-02-26
  • Contact: Lijie GUO E-mail:lizongnanbgrimm@163.com;ljguo264@126.com

摘要:

大倍线充填料浆管道输送困难及输送浓度偏低等问题是影响矿山充填效益的关键因素,如何低成本实现大倍线高浓度充填料浆的输送,是充填管道输送研究的重要课题。基于宾汉流体(B-H)的Buckingham方程,开展高浓度尾砂浆大倍线自流输送管道优化研究,结合安庆铜矿马头山矿段充填浓度低和输送倍线大的实际情况,采用分段计算、局部优化的方式,以较低的成本实现了安庆铜矿马头山矿段充填管线的优化工作,通过优化改造,输送效果得到明显改善,充填浓度提高了2%,为矿山创造了良好的综合效益。

关键词: 大倍线, 充填料浆输送, 宾汉流体, 管道阻力, 工作流速

Abstract:

Miles of pipelines are needed for the slurry transporting form the filling slurry preparation station to the goaf (filling stop) underground.Restricted by the spatial condition of orebody,slurry pipeline is usually connected by several vertical and horizontal sections,once the horizontal distance between the goaf to station is far from each other,the problem which called larger fill-times-line pipe transport(LFTLT) system is made.It is difficult to transport high density filling slurry by a LFTLT,therefore,many mines have to choose a lower density slurry instead therefore causing poor filling quality.So,how to transport high density filling slurry at a low cost is an important subject.Pumping slurry is usually used for LFTLT,such as supplying energy of paste slurry through plunger pump.However,the direct problem of power-transmission is high energy consumption and high cost.For many large-scale metal mines,such as iron ore and copper ore mines,filling materials consume a lot and transportation needs is large.Pumping filling is often high cost,thus restricts its extensive using in the transport process.How to optimize the slurry transport system to make true low cost,high efficiency and safety using is particularly important and also has important practical significance.The flow characteristics of high concentration filling slurry in pipeline can be expressed by Bingham flow pattern mathematically,it’s a linear non-newtonian fluid which means the fluid will flow only when the shear stress exceeds the initial shear stress,and the viscosity coefficient of the fluid is a constant.Because this flow pattern is simple in equation form and convenient in calculation and analysis,a large number of research practices has been done and show that this flow pattern is more in line with the total tailings cemented filling slurry with a concentration of more than 65%.In this flow pattern,scholars have made fruitful achievements in tailing slurry transport,providing beneficial exploration for energy saving and efficiency increasing in this field,also achieved good results.On the basis of predecessors,this study work on optimization of self-flowing pipeline system which be used for tailings slurry concentration beyond 68%,and belongs to the LFTLT system.The main research method is using of the Buckingham equation of Bingham fluid (B-H),combining with the actual situation that low filling density and large fill-times-line in MTS section of Anqing copper mine.Pipeline optimization is also carried out in this paper,after that,the technical reconstruction has been taken,as a result,it is shown that the transportability has been obviously improved,the goal of increasing filling density by 2% has been achieved,which obviously created a comprehensive benefit.

Key words: large fill-times-line, slurry transportation, Bingham fluid, pipe transport resistance, flowing velocity

中图分类号: 

  • TD853

图1

输送管道局部优化研究技术思路"

图2

马头山矿段充填工艺指标统计图"

图3

-280 m中段钻孔布置平面图"

表1

方案优化前后充填料浆输送参数对比"

项目参数优化前优化后
-280 m中段管道输送参数分析对比至-280 m管道总长度/m2 3991 961
-280 m中段最大倍线7.165.85
计算工作流速(质量分数为66%)/(m·s-13.123.97
局部平均输送阻力/(Pa·m-12 125.02 599.6
计算局部输送能力/(m3·h-190.1114.6
至-460 m中段管道整体输送参数分析对比管道总长度/m2 7712 760
充填倍线5.385.36
计算工作流速(质量分数为66%)/(m·s-14.384.40
平均输送阻力/(Pa·m-12 828.22 839.5
计算输送能力/(m3·h-1126.4127.0

图4

马头山矿段改造前后充填管道结构图"

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