مهار نشت آب از آب‌بندان با استفاده از نانورس، سیمان و آهک

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار دانشگاه ساری

2 دانشجوی دکترای آبیاری و زهکشی دانشگاه علوم کشاورزی و منابع طبیعی ساری

3 دانشیار گروه مهندسی آب، دانشگاه علوم کشاورزی و منابع طبیعی ساری

چکیده

کارایی آب‌بندان‌ها با نشت آب از آن‌ها کاهش می‌یابد لذا یک راهکار افزودن مواد مختلف به خاک آب‌بندان است. در این پژوهش از درصدهای مختلف نانورس، 10% سیمان و 5% وزنی آهک برای کاهش هدایت هیدرولیکی خاک آب‌بندان استفاده گردید. هدایت هیدرولیکی خاک از 4-10*58/1 به 5-10*88/2 با افزودن 5/0% نانورس کاهش یافت. اندازه‌گیری فشار پیزومتریک مربوط به هر ماده نشان‌دهندۀ پایین افتادن خط آزاد جریان در دیوارۀ آب‌بندان می‌باشد. ترکیب خاک با نانورس، سیمان و آهک به ترتیب باعث کاهش 58%، 51% و 28% تلفات گردید که بیشترین کاهش نشت مربوط به خاک حاوی نانورس می‌باشد. ازنظر آماری بین نشت آب خاک معمولی با هر یک از مصالح تفاوت معنی‌داری در سطح اعتماد 95% وجود دارد. لذا استفاده از مصالح مختلف مانند نانورس، سیمان و آهک، به ترتیب تأثیر آن‌ها در کاهش نشت، برای مهار نشت در آب‌بندان توصیه می‌گردد که افزودن آهک در شرایط موردمطالعه اقتصادی‌تر بود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Reducing of Water Seepage from Ab-Bandan by using Nonoclay, Cement and Lime

نویسندگان [English]

  • Ali Shahnazari 1
  • Marzieh Bahari 2
  • Alireza Emadi 3
چکیده [English]

The efficiency of Ab-Bandans is reduced with water leakage from them, so one solution is adding different materials to the soil of Ab-Bandans. In this study, different percentages nanoclay, 10% cement and 5% lime was used to reduce hydraulic conductivity of the soil of Ab-Bandans. The hydraulic conductivity reduced from 1.58*10-4 to 2.88*10-5 with the addition of %0.5 nanoclay. Measurement of piezometric pressure showed that nonlocal, cement and lime decreasing the phreatic surface on banks. Composition of the soil with nanoclay, cement and lime, respectively, decreased 58%, 51% and 28% losses that nanoclay further reduces leakage. Statistically significant differences between water seepage losses of natural soil with other materials exist at 95%. So the use of different materials such as nanoclay, cement and lime, respectively their impact on reducing of seepage, recommended for control the leakage of Ab-Bandan that lime was more economical in the case study.

کلیدواژه‌ها [English]

  • experimental model
  • Hydraulic conductivity
  • Leakage
  • Nonomaterials
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