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基于离散元法的煤矿井下护孔筛管防堵性颗粒流分析

张金宝

张金宝. 基于离散元法的煤矿井下护孔筛管防堵性颗粒流分析[J]. 煤矿安全, 2017, 48(10): 178-181.
引用本文: 张金宝. 基于离散元法的煤矿井下护孔筛管防堵性颗粒流分析[J]. 煤矿安全, 2017, 48(10): 178-181.
ZHANG Jinbao. Grain Flow Analysis of Anti-blocking Performance of Coal Mine Hole-protecting Screen Pipe Based on Discrete Element Method[J]. Safety in Coal Mines, 2017, 48(10): 178-181.
Citation: ZHANG Jinbao. Grain Flow Analysis of Anti-blocking Performance of Coal Mine Hole-protecting Screen Pipe Based on Discrete Element Method[J]. Safety in Coal Mines, 2017, 48(10): 178-181.

基于离散元法的煤矿井下护孔筛管防堵性颗粒流分析

Grain Flow Analysis of Anti-blocking Performance of Coal Mine Hole-protecting Screen Pipe Based on Discrete Element Method

  • 摘要: 基于离散单元法,用PFC3D 软件建立了煤粉颗粒通过筛管的颗粒流模型,通过对煤粉颗粒穿过筛眼体积量的模拟,研究了护孔筛管的防煤粉堵塞性能,分析了筛眼直径、粒径比和围压等参数对煤粉颗粒通过筛管性能的影响规律。结果表明:穿过筛眼的颗粒体积随着筛眼和粒径比的增大而增大,且随着筛眼直径的增大其趋势逐步加大,总体上讲,穿过筛眼的颗粒体积整体上随着围压的增大而增大,但存在着“激变”区间,即围压增长到某一范围时,煤粉颗粒通过筛眼的体积量突然增大。
    Abstract: Based on discrete element method, the grain flow model of pulverized coal passing through screen pipe is established by PFC3D software. The paper studies the anti-blocking performance of hole-protecting screen pipe by simulating the volume of pulverized coal particles passing through screen pipe, analyzes the influence laws of screen mesh diameter, particle size ratio and surrounding pressure parameters on the performance of pulverized coal particles passing through screen pipe. The results show that the passed particle volume increases with the increasing of screen mesh dimeter and particle size ratio, and gradually increases with the increase of the screen mesh dimeter. Generally, the passed particle volume increases with the increasing of ambient pressure, but there is a “violent change” interval, the ambient pressure increases to a certain range, the passed particle volume increases suddenly.
  • [1] 杨睿月,黄中伟,李根生,等.煤层气水平井割缝筛管优化设计[J].煤炭学报,2014,39(14):2269-2275.
    [2] 吴柳根.膨胀筛管技术研究现状及发展建议[J].石油机械,2015,43(3):26-30.
    [3] 董长银,崔明月,彭建峰,等.气田水平井防砂筛管类型优选与精度优化试验[J].中国石油大学学报(自然科学版),2015,39(6):104-109.
    [4] 韩树,李根生,黄中伟,等.连续油管带筛管侧钻多分支井双重环空携岩能力实验[J].石油学报,2016,37(8):1053-1059.
    [5] 孙新胜,王力,方有向,等.松软煤层筛管护孔瓦斯抽采技术与装备[J],煤炭科学技术,2013,41(3):74.
    [6] 苏海洋,申瑞臣,付利,等.煤层气水平井塑料割缝筛管有限元分析与参数优化[J].中国煤层气,2012,9(3):30-34.
    [7] 王同涛,闫相祯,杨秀娟.基于塑性铰模型的煤层气完井筛管抗挤强度分析[J].煤炭学报,2010,35(2):273.
    [8] 黄中伟,李根生,闫相祯,等.煤层气井钢质筛管与非金属筛管强度对比实验[J].石油勘探与开发,2012,39(4):489-493.
    [9] 付利,申瑞臣,苏海洋,等.煤层气水平井完井用塑料筛管优化设计[J].石油机械,2012,40(8):47-51.
    [10] 黄中伟,李根生,王开龙,等.基于离散单元法的筛管内煤灰颗粒通过性分析[J].煤炭学报,2012,37(12):2083-2086.
    [11] P.A. Cundall. A computer model for simulating progressive large scale movements in blocky system[C]// Muller Led. Proceedings of Symposium of the International Society of Rock Mechanics. Rotterdam: A. A. Balkema, 1971(1):8-12.
    [12] P.A. Cundall, O.D.L. Strack. A discrete numerical method for granular assemblies[J]. Geotechnique, 1979, 29(1):47-65.
    [13] 王泳嘉.离散元法及其在岩石力学中的应用[J].金属矿山,1986,5(8):13-17.
    [14] 周先齐,徐卫亚,钮新强,等.离散单元法研究进展及应用综述[J].岩土力学,2007,28(S):408-416.
    [15] 田瑞霞,焦红光.离散元软件PFC在矿业工程中的应用现状及分析[J].矿冶,2011,20(1):79-82.
    [16] 李磊.离散元法在农业工程中的研究现状及展望[J].中国农机化学报,2015,36(5):345-348.
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  • 发布日期:  2017-10-19

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