طراحی و ساخت جعبه برش دو بخشی جهت مدل‌سازی گسلش عادی و معکوس در دستگاه سانتریفیوژ ژئوتکنیکی

نوع مقاله : Articles

نویسندگان

1 دانشگاه فردوسی مشهد

2 دانشگاه تهران

چکیده

در اثر جابه‌جایی ریز صفحات نسبت به همدیگر امواج لرزه‌ای و شکست گسل شکل می‌گیرد که با توجه به عمق، میزان جابه‌جایی، نوع جابه‌جایی، شرایط زیرسطحی پیامدهای متنوعی را بر روی سطح زمین از خود نشان می‌دهد. تاکنون مطالعات محدودی بر روی گسلش سطحی صورت گرفته است اما به دنبال وقوع سه زمین‌لرزه چی‌چی تایوان، دوزجی وکوجاعلی ترکیه انجام چنین مطالعاتی شتاب گرفته است. با توجه به از بین رفتن سریع شواهد سطحی گسلش و کم بودن زمان بررسی‌ها از یک طرف و زمان‌بر بودن و بالا بودن هزینه ساخت نمونه‌های بزرگ‌مقیاس (شرایط 1g) از طرف دیگر، اهمیت مطالعات گسلش در شرایط گرانش تشدید شده (Ng) به کمک دستگاه سانتریفیوژ را آشکار می‌کند. در این تحقیق ابتدا جزئیات جعبه دو بخشی گسلش مورد استفاده تشریح شده است. سپس نتایج هفت آزمایش شبیه‌سازی گسلش انجام شده به کمک این جعبه ارائه شده است. پنج آزمایش اولیه به‌منظور کالیبراسیون جعبه و کاهش شرایط مرزی بوده است و دو آزمایش نیز به شبیه‌سازی گسلش عادی و معکوس-  بعد از کسب شرایط مطلوب – بر روی خاک‌های دانه‌ای پرداخته است سپس نتایج مقدار جابه‌جایی منتقل شده به سطح زمین، میزان جابه‌جایی مورد نیاز سنگ کف جهت ظهور گسل در سطح، تغییر زاویه گسل از سنگ کف تا سطح زمین، وسعت منطقه تغییر شکل در گسلش معکوس و عادی با همدیگر مقایسه شده است.Centrifuge Modeling of Reverse and Normal Faulting with a Designed and Manufactured Split BoxNaser Tali1, Gholam Reza Lashkaripour2*, Naser Hafezi Moghadas3 and Abbas Ghalandarzadeh4 1. Ph.D. Candidate Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran 2. Professor Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran, *Corresponding Author, email: lashkaripour@um.ac.ir 3. Professor Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran 4. Associate Professor School of Civil Engineering, College of Engineering, University of Tehran, Tehran, IranKeywords: Centrifuge, Faulting, Split Box, Rupture Propagation, Reverse Faulting, Normal Faulting.--English abstract is in the final page of the pdf file--

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