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渠道的膜料防渗因其防渗效果好、适应变形能力强、施工简便、工期短、造价低等诸多优点正被广泛采用。但在汛期或雨后,很多采用此种防渗措施的挖方渠道,常伴有大面积的脱坡、鼓膜等破坏现象发生。究其原因,其中最主要的一条就是排水减压措施不当或无排水减压措施,没有很好地削减防渗膜外的水压力造成的。查哈阳灌区主干渠0+000至1+700段防渗工程,2000年即已完工投入使用,通过几年运行,尤其经受了2003年洪水考验,效果较好。现把查哈阳灌区主干渠防渗段排水系统的布置与细部构造介绍给大家,仅供参考。
Diaphragm impervious material because of its impermeable effect, to adapt to strong deformation, construction is simple, short construction period, low cost and many other advantages are being widely used. However, during the flood season or after the rain, many excavation channels that use such seepage control measures are often accompanied by large-scale de-slope and tympanic membrane destruction. The reason, one of the most important is the improper draining decompression measures or no drainage decompression measures, did not properly cut the impermeable membrane water pressure caused. Chahayang Irrigation District main canal 0 + 000 to 1 + 700 anti-seepage project, which has been completed and put into use in 2000, after several years of operation, in particular, has withstood the 2003 flood test, the effect is better. Now Chahayang Irrigation District main canal impervious section drainage system layout and detailed structure introduced to you for reference purposes only.