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مهار نشت آب از آببندان با استفاده از نانورس، سیمان و آهک | ||
تحقیقات آب و خاک ایران | ||
مقاله 19، دوره 47، شماره 3، آبان 1395، صفحه 625-635 اصل مقاله (805.51 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/ijswr.2016.59332 | ||
نویسندگان | ||
علی شاهنظری* 1؛ مرضیه بهاری2؛ علیرضا عمادی3 | ||
1دانشیار دانشگاه ساری | ||
2دانشجوی دکترای آبیاری و زهکشی دانشگاه علوم کشاورزی و منابع طبیعی ساری | ||
3دانشیار 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 | ||
زهاب؛ مدل آزمایشگاهی؛ نانومواد؛ هدایت هیدرولیکی | ||
مراجع | ||
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