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塑料薄膜防渗渠道(以下简称“塑膜渠道”)近几年来发展较快,仅新疆建设兵团每年建成的塑膜渠道就有上千公里。它具有防渗效果好,冻胀破坏小,造价低,运输量少,易于施工等优点。为防止塑料的老化和破坏,绝大部分采用的是土料保护层。调查结果表明,由于设计和施工不当,而造成的保护层滑塌破坏多达四分之一,本文仅就影响塑膜渠道保护层稳定的主要因素,作一简要分析。
Plastic film seepage channels (hereinafter referred to as “plastic film channels”) developed rapidly in recent years, only the construction of Xinjiang Corps each year there are thousands of plastic film channels. It has good anti-seepage effect, frost heaving damage, low cost, less traffic, easy construction and so on. In order to prevent the aging and destruction of plastics, the vast majority of soil protection layer is used. The survey results show that as a result of improper design and construction, which caused as much as one-fourth of the damage caused by the collapse of the protective layer, this article only makes a brief analysis on the main factors that affect the stability of the protective layer of the plastic film channel.