河流潜流带中胶体迁移的研究进展

Advances in researches on colloid transport in hyporheic zone

分析潜流带中形成胶体的物理、化学机理,以及胶体在潜流带中泵吸交换、冲淤交换、沉降、过滤和截留的各种迁移机理。阐述影响胶体在潜流带中迁移的因素、胶体对污染物在河流中迁移的影响以及胶体对潜流带生态环境的影响,并给出了胶体在河流中迁移的定量模型。最后对胶体在潜流带中的迁移研究现存的主要问题及未来研究方向提出了看法。

The physical and chemical mechanisms of colloid formation and transport in the hyporheic zone were analyzed,including pumping exchange,turnover exchange,sedimentation and filtering effect.The key factors for the colloid transport in the hyporheic zone and the influences of the colloids on the transport of pollutants in rivers as well as their influences on the ecological environment in the hyporheic zone were discussed.A quantitative model for the colloid transport in rivers was proposed.Some recommendations were put forward with regard to the main problems and future research directions of colloid transport in the hyporheic zone.