尾砂胶结充填料浆输送管道阻力及磨损分析模拟研究  

Simulation Study on Resistance and Wear of Filling Tansportation Pipeline of Tailing Cemented Filling Slurry

作　　者：祝鑫 仵锋锋 尹旭岩 刘杨 王新宇 ZHU Xin;WU Feng feng;YIN Xuyan;LIU Yang;WANG Xinyu(Changsha Institute of Mining Research Co.,Ltd.,Changsha,Hunan 410012,China;State Key Laboratory of Metal Mine Safety Technology,Changsha,Hunan 410012,China)

机构地区：[1]长沙矿山研究院有限责任公司,湖南长沙410012 [2]金属矿山安全技术国家重点实验室,湖南长沙410012

出　　处：《矿业研究与开发》2022年第3期120-124,共5页Mining Research and Development

基　　金：国家重点研发计划项目(2018YFC0604603,2018YFC0604606);山东省重大科技创新工程项目(2019SDZY05)。

摘　　要：采用计算流体动力学数值模拟软件CFD,依据某金矿井下管道实际布置情况,遵循质量、能量以及动量守恒定律,建立了ANSYS三维数值计算模型。设定充填料浆的灰砂比为1∶5和1∶10,充填料浆质量浓度分别为68%、70%、72%,开展了充填输送管路的速度、阻力以及磨损数值模拟试验。结果表明:直管中速度最大处位于管道中心,而弯管中速度最大处位于管道外侧;随着充填料浆质量浓度增大,管道阻力损失也随之变大。当灰砂比为1∶10,充填料浆质量浓度为72%时,管道阻力损失为19.86 MPa;随着流速的增大,冲蚀磨损率也在逐渐增加,尤其当速率大于6 m/s后,冲蚀磨损率急剧增加,并且因为惯性力作用,冲蚀磨损主要发生在管道外侧部分,数值模拟规律与现场实际相符。According to the actual layout of underground pipelines in a gold mine,a three-dimensional numerical calculation model of ANSYS was established through using computational fluid dynamics numerical simulation software CFD and following the laws of mass,energy and momentum conservation.The cement-sand ratio of the filling slurry was set to be 1∶5 and 1∶10,and the mass concentration of the filling slurry was set to be 68%,70%and 72%.Then,the numerical simulation tests on the velocity,resistance and wear of the filling transportation pipeline were carried out.The results are obtained as follows.Firstly,the maximum velocity in the straight pipe is located in the center of the pipe,and the maximum velocity in the elbow is located in the outer part of the pipe.With the increase of slurry mass concentration,the pipeline resistance loss increases.When the cement-sand ratio is 1∶4,and the mass concentration of filling slurry is 72%,the pipeline resistance loss reaches 19.86 MPa.With the increase of flow velocity,the erosion wear rate increases gradually,especially when the velocity is greater than 6 m/s,the erosion wear rate increases sharply.Because of the inertial force,the erosion wear mainly occurs in the outer part of the pipeline.The numerical simulation law is consistent with the actual field.

关 键 词：数值模拟 CFD 充填料浆 管道阻力 冲蚀磨损 

分 类 号：TD853.34[矿业工程—金属矿开采]