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時間：2019-03-20 網址：<a href="http://www.majubuanatravel.com/">http://www.majubuanatravel.com/</a> 分享： </span> </div> <div class="thecontent"><p> 土工膜的分子結構和制造工藝要求土工膜不透水、不透氣。土工膜不應與粗土顆粒接觸，必要時應使用復合土工膜，防止土工織物對土工膜的損壞。土工膜與其他材料(包括土壤)之間的摩擦是土工膜設計中的一個重要控制指標。土工膜在土壤(或其他材料,如混凝土)一起工作,由于接觸表面不光滑,土壤顆粒粗和局部大變形等原因的土壤高水頭作用下土工膜可能會破裂,眼淚,和失去或減少其不透水性能,它對于泄漏測試是必要的。 </p> <p align="center"> <img onload="resize(this,700)" alt="土工膜不宜與較粗的土粒相接觸" src="/upload/image/20190320/20190320111102_16654.jpg" /> </p> <p align="center"> </p> <p> <br /> </p> <p> 土工膜分子結構的定義及制造工藝 </p> <p> <br /> </p> <p> 實驗研究和工程實踐證明，由于制造工藝的各種原因，普通土工膜是不透水的，或者說只能說是相對不透水的。如果繼續使用達西滲流定律的概念,認為在水利工程滲透系數K <真空度cm / s粘土防滲,可以稱為防滲土工膜滲透系數應該K < 10 - 14厘米/秒,這是因為土工膜防滲體的厚度比粘土防滲體的厚度薄很多,同時頭作用下的水力梯度比后者大得多。 </p> <p> <br /> </p> <p> 土工膜分子結構的定義及制造工藝 </p> <p> <br /> </p> <p> 可以看出，粒徑分布越好，水壓阻力越大。顆粒越細，抗水壓能力越強。聚乙烯土工膜厚度0.25mm，在砂卵石層上可承受200米水頭，級配較好。 </p></div> <script> window._bd_share_config = { common : { bdText : '<p> 土工膜的分子結構和制造工藝要求土工膜不透水、不透氣。土工膜不應與粗土顆粒接觸，必要時應使用復合土工膜，防止土工織物對土工膜的損壞。土工膜與其他材料(包括土壤)之間的摩擦是土工膜設計中的一個重要控制指標。土工膜在土壤(或其他材料,如混凝土)一起工作,由于接觸表面不光滑,土壤顆粒粗和局部大變形等原因的土壤高水頭作用下土工膜可能會破裂,眼淚,和失去或減少其不透水性能,它對于泄漏測試是必要的。 </p> <p align="center"> <img onload="resize(this,700)" alt="土工膜不宜與較粗的土粒相接觸" src="/upload/image/20190320/20190320111102_16654.jpg" /> </p> <p align="center"> </p> <p> <br /> </p> <p> 土工膜分子結構的定義及制造工藝 </p> <p> <br /> </p> <p> 實驗研究和工程實踐證明，由于制造工藝的各種原因，普通土工膜是不透水的，或者說只能說是相對不透水的。如果繼續使用達西滲流定律的概念,認為在水利工程滲透系數K <真空度cm / s粘土防滲,可以稱為防滲土工膜滲透系數應該K < 10 - 14厘米/秒,這是因為土工膜防滲體的厚度比粘土防滲體的厚度薄很多,同時頭作用下的水力梯度比后者大得多。 </p> <p> <br /> </p> <p> 土工膜分子結構的定義及制造工藝 </p> <p> <br /> </p> <p> 可以看出，粒徑分布越好，水壓阻力越大。顆粒越細，抗水壓能力越強。聚乙烯土工膜厚度0.25mm，在砂卵石層上可承受200米水頭，級配較好。 </p>', bdDesc : '<p>...', bdUrl : 'http://www.dingyajx.com/news_show.php?theid=722', bdPic : '' }, share : [{ "bdSize" : 16 }] } 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