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土料保护层塑料薄膜衬砌渠道具有防渗效果好、造价低、抗冻胀性能强等优点,近年来在国内大量推广。本文通过室内外试验及实体工程验证,提出用低密度、甚至非击实填土作为塑料薄膜上覆保护层,借浸-排水固结方法达到预定密实度的新型施工方法,及配套的土坡稳定性图解与现行方法相比,具有施工简易、节约渠道用地、并更能确保土料保护层塑料薄膜衬砌渠道的边坡稳定性,在北方中小型渠道中很有应用推广前景。
Soil protective plastic film lining channels with anti-seepage effect is good, low cost, anti-frost heaving performance advantages, in recent years, a large number of domestic promotion. In this paper, indoor and outdoor tests and physical engineering verification, proposed low-density, or even non-compacted fill as plastic film overlying protective layer, by leaching - drainage consolidation method to achieve a predetermined density of the new construction methods, and supporting soil slope Compared with the current method, the stability diagram has the advantages of simple construction, saving land for channels and better ensuring the slope stability of plastic film lining channels with soil protective layer. Therefore, it is very promising for application in medium and small channels in the north.