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粒径对多孔介质中悬浮颗粒迁移—沉积特性的影响

刘泉声, 崔先泽, 张程远, 占婷

刘泉声, 崔先泽, 张程远, 占婷. 粒径对多孔介质中悬浮颗粒迁移—沉积特性的影响[J]. 岩土工程学报, 2014, 36(10): 1777-1783. DOI: 10.11779/CJGE201410003
引用本文: 刘泉声, 崔先泽, 张程远, 占婷. 粒径对多孔介质中悬浮颗粒迁移—沉积特性的影响[J]. 岩土工程学报, 2014, 36(10): 1777-1783. DOI: 10.11779/CJGE201410003
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LIU Quan-sheng, CUI Xian-ze, ZHANG Cheng-yuan, ZHAN Ting. Effects of particle size on characteristics of transportation and deposition of suspended particles in porous media[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(10): 1777-1783. DOI: 10.11779/CJGE201410003
Citation: LIU Quan-sheng, CUI Xian-ze, ZHANG Cheng-yuan, ZHAN Ting. Effects of particle size on characteristics of transportation and deposition of suspended particles in porous media[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(10): 1777-1783. DOI: 10.11779/CJGE201410003
shu

粒径对多孔介质中悬浮颗粒迁移—沉积特性的影响  English Version

  • 1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北 武汉 430071;
    2. 武汉大学水工岩石力学教育部重点实验室,湖北 武汉 430072

基金项目: 国家自然科学基金项目（41272272）; 湖北省自然科学基金项目（132002）; 国家重点实验室基金项目（SKLQ009）
详细信息
    作者简介:

    刘泉声(1962- ),男,研究员、博士生导师,主要从事岩土力学与地下工程方面的研究工作。E-mail: liuqs@whrsm.ac.cn。

Effects of particle size on characteristics of transportation and deposition of suspended particles in porous media

  • 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China;
    2. Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering, Ministry of Education, Wuhan University, Wuhan 430072, China

摘要

    摘要
  • 摘要: 粒径变化对悬浮颗粒在多孔介质中迁移—沉积过程影响的研究有重要意义。利用自主研发的砂层迁移—沉积模拟试验系统,研究不同粒径的悬浮颗粒在不同尺寸多孔介质中的迁移—沉积特性。结果表明,对于相同尺寸的多孔介质,随着悬浮颗粒粒径的增加,到达相对浓度峰值时间增加,而对应的相对浓度峰值降低;同时,对于相同粒径的悬浮颗粒,随着多孔介质尺寸增大,相对浓度峰值增加;另外,相对于多孔介质,悬浮颗粒粒径的变化对其迁移—沉积过程影响更为显著;随着多孔介质与悬浮颗粒粒径比增大,相对浓度的峰值和终值增大;根据粒径比不同将悬浮颗粒在多孔介质中的迁移—沉积类型划分为“滤饼过滤型”、“迁移—沉积型”、“自由迁移型”3种。研究结果为水源热泵回灌过程中悬浮颗粒在地层中的迁移—沉积特性进一步研究奠定了基础。
    Abstract: Particle size plays an important role in transportation and deposition of particles in porous media, especially in the WSHP engineering. The transportation-deposition characteristics of particles with different sizes in porous media with different sizes are studied by the self-developed sand transportation-deposition equipment. The studies show that when the size of porous media is fixed and the size of suspended particles increases, it needs more time to reach the peak of relative concentration, and at the same time, the corresponding peak value declines. Meanwhile, when the size of suspended particles is fixed and the size of porous media increases, the peak value of relative concentration also increases. Relative to the porous media, change in the size of suspended particles has more significant effects in the transportation-deposition process. In addition, the peak and final values of relative concentration increase when the diameter ratio of the porous media and suspended particles increases. Finally, according to the difference of diameter ratio, the model of transportation-deposition is divided into three types, i.e., filter cake mode, transportation-deposition mode and free transportation mode. The research lays a foundation for further studies on the transportation-deposition characteristics that suspended particles transport in layer, especially in the recharge process of WSHP.
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出版历程
  • 收稿日期:  2013-12-04
  • 发布日期:  2014-10-19

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