天然滤床淤塞机理及防治措施研究

天然河床砂卵石层潜流水取水技术中,滤床存在长期取水条件下的淤塞问题。通过对滤床淤塞机理深入研究分析可知,滤床淤塞主要源于物理、化学、生物三方面的作用。提出了滤床的结构特征、原水水质、水动力条件、渗滤取水面积及取水孔布置等是影响淤塞的主要控制因素,以及总结了防治淤塞的措施。

Study on Silting Mechanism and prophylactico-therapeutic measures of the Seepage Bed

In the technique of percolating water abstraction,the seepage bed has the problem of silt. The paper analyses the silting mechanism which derives from physical,chemical and biologic effect. It puts forward some main factors that influences the silt,which are structure characteristics of the filter bed,water quality of river,the condition of water force,the area of water abstraction and arrangement of the holes. The paper also summarizes the prophylactico--therapeutic measures of seepage bed.