Influence of concentration of suspended particles on transport and deposition characteristics in saturated porous media

CHEN Xing-xin; BAI Bing; YAN Yu-long; JIA Ding-yun

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Influence of concentration of suspended particles on transport and deposition characteristics in saturated porous media

更新时间：2026-06-25

- Influence of concentration of suspended particles on transport and deposition characteristics in saturated porous media
- Vol. 33, Issue 8, (2012)
- 作者机构：
  
  北京交通大学土木建筑工程学院,北京,100044
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU441
- Online First：13 August 2012，
  
  Published：2012
- 稿件说明：
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CHEN Xing-xin, BAI Bing, YAN Yu-long, et al. Influence of concentration of suspended particles on transport and deposition characteristics in saturated porous media[J]. 2012, 33(8).
DOI：

CHEN Xing-xin, BAI Bing, YAN Yu-long, et al. Influence of concentration of suspended particles on transport and deposition characteristics in saturated porous media[J]. 2012, 33(8). DOI：

摘要

多孔介质中悬浮颗粒迁移和沉积特性的研究对地下污染物净化、石油开采、核废料处置、水土保持等有很重要的意义。对4种不同浓度的悬浮颗粒在3种不同的渗流速度下进行室内试验，研究悬浮颗粒的浓度对其迁移和沉积特性的影响。结果表明，在一定的悬浮颗粒浓度下，随着渗流速度的增加，穿透曲线中的悬浮颗粒的相对浓度也增大。同时，渗流速度一定时，悬浮颗粒的浓度存在一个临界值，小于该临界值，穿透曲线中的相对浓度随悬浮颗粒的浓度增大而增大；大于该临界值时，相对浓度随悬浮颗粒的浓度增大而减小。另外，悬浮颗粒的临界浓度是与渗流速度相关的，随着渗流速度增加，悬浮颗粒的临界浓度也逐渐增大

Abstract

Suspended particles transport and deposition in porous media play an important role in pollutant purification

oil exploration

nuclear waste disposal

water- soil conservation. In order to study the effect of suspended particles concentration on the breakthrough curves

4 different suspended particle concentrations have been studied under 3 flow velocities in columns of saturated porous media. The studies show that

under constant suspended particle concentration

the relative concentration is increase with the flow velocity. Meanwhile

under a constant flow velocity

there exists a critical concentration for suspended particles. Below the critical concentration

relative concentration in breakthrough curves is in creased with the suspended particles concentration; but the trend is inversely when the suspended particle concentration is more than the critical value. Besides

the critical concentration of suspended particles is related to the flow velocity; the critical value is increased with the flow velocity.

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