摘要
采用计算流体动力学CFD软件,依据三山岛金矿井下的管路布置情况,建立了大型三维数值计算模型。设置料浆的灰砂比为1∶5,质量浓度分别为68%、72%,以及是否添加低密剂等工况,开展数值模拟仿真。根据数值模拟结果,充填料浆质量浓度越高,管道压力也越大。最大管道压力出现在-960 m中段,最小管道压力出现在-330 m中段,数值模拟规律与现场实际相符。与不加入低密剂的对照组相比,加入低密剂后,当灰砂比为1∶5,质量浓度分别为68%、72%时,管道压力降幅分别为18.72%、18.97%,说明在充填料浆中加入低密剂能够降低管道压力,且管道压力的降低幅度满足了预期目标。
Based on the underground pipeline layout of Sanshandao Gold Mine,a large-scale three-dimensional numerical calculation model was established by computational fluid dynamics(CFD)software.Numerical simulation was carried out under the conditions with the cement-sand ratio of 1∶5,the mass concentration of 68%and 72%respectively,as well as whether adding low-density agent.According to the numerical simulation results,it is found that the higher the mass concentration of filling slurry,the greater the pipeline pressure.The maximum pipeline pressure and the minimum pipeline pressure appear at the-960 m level and-330 m level,respectively.The numerical simulation laws are consistent with the field practice.Compared with the control group without low-density agent,when the low-density agent is added and the cement-sand ratio is 1∶5,the pipeline pressure decreases by 18.72%and 18.97%respectively under the mass concentration of 68%and 72%.The result indicates that adding low-density agent into the filling slurry can reduce the pipeline pressure,and the reduction range of pipeline pressure can meet the expected goal.
作者
郑伯坤
ZHENG Bokun(Changsha Institute of Mining Research Co.,Ltd.,Changsha,Hunan 410012,China;State Key Laboratory of Metal Mine Safety Technology,Changsha,Hunan 410012,China)
出处
《矿业研究与开发》
CAS
北大核心
2022年第3期116-119,共4页
Mining Research and Development
基金
“十三五”国家重点研发计划项目(2018YFC0604603,2018YFC0604606)
2019年度山东省重大科技创新工程项目(2019SDZY05)。
关键词
充填料浆
低密剂
深井充填
管道压力
数值模拟
Filling slurry
Low-density agent
Deep well filling
Pipeline pressure
Numerical simulation
