玉溪市海绵工程透水砖堵塞规律研究

Research on Plugging Pattern of Permeable Bricks in Yuxi Sponge Project

为研究分析透水砖堵塞规律,采用配制合成的雨水径流模拟透水砖的堵塞过程,考察了透水砖初始透水系数、透水柱进水水位高度及堵塞溶液SS浓度对透水砖透水系数的影响。实验结果表明,透水砖堵塞过程分为快速堵塞、小幅恢复和慢速堵塞三个阶段,透水砖初始透水系数较大、透水柱进水水位较高、堵塞溶液SS浓度较低时,透水砖堵塞相对缓慢;经过长时间堵塞,透水砖最终透水系数相近。研究透水砖的堵塞规律,对透水砖在海绵城市建设中的推广使用具有一定的意义。

In order to study and analyze the blockage pattern of permeable brick,the process of blockage of permeable brick was simulated by using synthetic rainwater. The results showed that the blockage process of permeable brick was divided into three stages: rapid blockage,small recovery and slow blockage. Experiments were carried out to study the factors related to the permeability coefficient of the permeable bricks,such as the initial permeability coefficient of the permeable brick,the inlet water level of the permeable column and the SS concentration of the clogging solution,which indicated that the blocking speed of the permeable bricks was slow when the initial water permeability coefficient of the permeable brick was large,the water level of the permeable column was deep,and the clogging solution concentration was relatively low. And after long period of blockage,the permeability coefficients of permeable bricks were similar. The research on the plugging pattern of permeable bricks had a strong significance for the promotion of permeable bricks in sponge cities.