تحلیل عددی استاتیکی عملکرد زه‌کش چتری در تونل بدون پوشش دایروی عمیق تحت تراوش پایدار

نوع مقاله : پژوهشی

نویسندگان

دانشگاه اصفهان

چکیده

در این تحقیق سیستم زه‌کش چتری، به‌عنوان یک سیستم زه‌کشی در تونل‌های تحت اثر تراوش پایدار معرفی می‌گردد. آرایش این سیستم زه‌کشی برگرفته از ترکیب زه‌کش لولۀ اتصالی و الهام گرفته‌شده از نگهدارندۀ چتری فورپولینگ است. در این پژوهش به‌وسیلۀ نرم‌افزار اجزای محدود آباکوس، عملکرد این سیستم زه‌کشی به‌صورت تحلیل استاتیکی عددی در تونل دایروی عمیق تحت تراوش پایدار، مورد بررسی قرار می‌گیرد. در این مقاله با درنظر گرفتن سه پارامتر شاهد (کرنش اصلی مؤثر ماکزیمم در زمین تونل، توزیع فشار آب حفره‌ای در جدارۀ تونل و گرادیان هیدرولیکی در اطراف زه‌کش‌ها) و بررسی کلیۀ مشخصات مؤثر بر عملکرد لولۀ زه‌کش، به ارائۀ یک آرایش بهینه برای این سیستم زه‌کشی پرداخته شده است.

کلیدواژه‌ها

عنوان مقاله [English]

Numerical Statical Analysis of Umbrella Drain Performance in Deep Circular Not-lined Tunnel for Steady-State Seepage

نویسندگان [English]

  • Ali Hosseinbalam
  • Mahmoud Hashemi
University of Isfahan
چکیده [English]

In this article, Umbrella drainage system is presented as a alternative drainage system for the tunnels under steady state-seepage condition. The arrangement of this system is inspired from pin-hole drainage system and forepoling method of support installation. In this study, the performance of this drainage system is investigated through numerical statical analysis for deep circular tunnels subjected to steady-state seepage by using ABAQUS finite element software. In this regard, three monitoring parameters have been investigated: tunnel domain’s maximum effective principle strain, pore water pressure distribution of the tunnel walls and hydraulic gradient around the drainages. By taking into account these parameters, an optimum arrangement for the draining system is presented through exploring all of the factors affecting the drainage tube performance.

کلیدواژه‌ها [English]

  • Umbrella Drainage
  • Deep Circular Tunnel
  • Steady-State Seepage and Numerical Statical Analysis

مراجع

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