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对一种国产新型渗灌管的渗水性能进行了室内初步试验,结果表明,在2m的低水头情况下,渗管渗水不均匀,管壁有喷水现象,但其渗水速率较大。渗水速率随时间和累积渗水量的增加而减小,每次渗水的初始渗水速率与总累积渗水量之间呈指数关系衰减;初步确定出设计参考渗水速率为8.0~8.5L/(m·h);渗水后的水质有明显变化,化学堵塞和物理堵塞是渗灌管渗水速率减小的重要原因。
A preliminary experiment on the seepage performance of a domestic new type of seepage pipe was carried out. The results showed that the seepage pipe was unevenly seeped and the pipe wall was spurted at a low head of 2m, but the water seepage rate was relatively high. The seepage rate decreased with the increase of time and cumulative water infiltration. The initial water seepage rate of each seepage and the total cumulative water seepage decreased exponentially. The designed reference seepage rate was preliminarily determined to be 8.0-8.5 L / ( m · h). The water quality after water seepage changed obviously. Chemical blockage and physical blockage were the important reasons for the decrease of water seepage rate in seepage pipe.