اعتبار،چابکی،پاسخگویی

بررسی مخاطرات ژئوتکنیکی و چالش‎های اجرایی تونل دالوکش (پروژه راه اصلی شهرستان الیگودرز- مسجد سلیمان)

نوع مقاله : یادداشت فنی

نویسندگان

1 کارشناسی ارشد، ناظر واحد تونل، پروژه راه اصلی الیگودرز- مسجد سلیمان، شرکت مهندسین مشاور راه‏یاب ملل

2 کارشناسی ارشد، سر ناظر، پروژه راه اصلی الیگودرز- مسجد سلیمان، شرکت مهندسین مشاور راه‏یاب ملل

3 کارشناسی ارشد، گروه ژئوتکنیک- مطالعات و طراحی دفتر مرکزی، شرکت مهندسین مشاور راه‏یاب ملل

چکیده
تونل شماره دو (دالوکش)، یکی از سازه‎های مهم و از جمله تونل‎های متعدد راه اصلی الیگودرز- مسجد سلیمان در قطعه اول این پروژة ملی است. این پروژه می‎تواند علاوه بر کریدور ارتباطی برای جنوب غرب کشور به پایتخت کشور، امکان دسترسی به ساختگاه سد و نیروگاه عظیم لیروک (که مطالعات آن در دست اقدام است) را فراهم کند. مضاف بر این موارد، مسیر این طرح در مناطق محتمل نفت خیز ایران قرار دارد. لذا در آینده این پروژه می‎تواند برای اکتشافات ذخایر نفت در این مناطق و در جهت منافع ملی، حائز اهمیت فراوانی شود. ساختگاه زمین‎شناسی پروژه در زون ساختاری زاگرس قرار گرفته است. فعالیتهای متعدد تکتونیکی، موجب ایجاد انبوهی از زونهای گسلی و پیچیدگی ساختارهای زمین‎شناسی (لایه‎بندی‎ها و چین‎خوردگی‎ها) در این منطقه شده است. شرایط زمین‎شناسی این پهنه، عملیات اجرایی تونل کوتاه دالوکش (به طول 133 متر) را با مخاطرات و تأخیراتی همراه ساخت. در این مقاله به شرح مخاطرات و مشکلات اجرایی این تونل پرداخته می‎شود. شناخت مخاطرات و چگونگی اتخاد راهکارهای علاج‎بخشی در عملیات حفاری تونل‎ها میتواند ریسک مخاطرات ایمنی، هزینه‎ها و زمانبندی را تا حد زیادی تعدیل نماید. در تونل دالوکش نیز ناپایداری توده‎سنگ در پرتالهای ورودی- خروجی تونل و ریزش در زونهای خردشده مسیر حفاری، مخاطراتی را به دنبال داشته است. در این تونل در مواجهه با مخاطرات ژئوتکنیکی، مجموعه‎ای از راهکارها شامل اجرای تحکیمات ویژه، اجرای دیوارهای حائل بتنی جهت علاج بخشی مورد استفاده قرار گرفته است. هدف از ارائه این مقاله، مستندسازی درس آموخته‎ها و انتقال تجارب این پروژه در صنعت تونل‎سازی کشور است.

کلیدواژه‌ها

موضوعات

عنوان مقاله English

The Study of Geotechnical Hazards and Implementation Challenges of Dalukosh Tunnel (Project of Main Road of Aliguodarz-Masjed Soliman)

نویسندگان English

vahid joudaki 1
Majid Derikvandi 2
Mehran Mirzaei 3
Mohammad Reza Farzinpour 3
Shilan Hoseyni 3
1 MSc, Tunnel Supervisor, Project of the Main Road of Aliguodarz-Masjed Soliman, Rahyab Melal Consulting Engineers Company
2 MSc, Head Supervisor, Project of the Main Road of Aliguodarz-Masjed Soliman, Rahyab Melal Consulting Engineers Company
3 MSc, Department of Geotechnics-Studies and Design of the Central Office, Rahyab Melal Consulting Engineers Company
چکیده English

Tunnel number two (Dalukosh) is one of the important structures and among the many tunnels of the main road of Aligudarz-Masjed Soliman in the first part of this national project. In addition to the communication corridor for the southwest of the country to the country's capital, this project can provide access to the construction site of the dam and the large power plant of Lirok (whose studies are in progress). In addition to these cases, the route of this plan is located in the likely oil-rich areas of Iran. Therefore, this project can be very important for the exploration of oil reserves in these areas and for national interests. The geological location of the project is located in the structural zone of Zagros. Numerous tectonic activities have created a multitude of fault zones and the complexity of geological structures (bedding and folds) in this area. The geological conditions of this area made the implementation of the Dalukosh short tunnel (133 meters long) associated with risks and delays. In this article, the dangers and implementation problems of this tunnel are discussed. Knowing the risks and how to adopt remedial solutions in tunnel excavation operations can greatly reduce the risk of safety issues, costs and time delays. In the Dalukosh tunnel, the instability of the rock mass in the entrance-exit portals of the tunnel as well as the collapse in the crushed zones of the excavation path have caused risks. In this tunnel, in order to deal with geotechnical hazards, a series of solutions including the implementation of special reinforcements and the implementation of concrete retaining walls have been used.The purpose of presenting this article is to document the lessons learned and transfer the experiences of this project in the country's tunneling industry.

کلیدواژه‌ها English

  • Lesson Learned
  • Tunneling
  • Geotechnical hazards
  • Fault Zone
  • Zagros Structural Zone
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  • تاریخ دریافت 11 تیر 1403
  • تاریخ بازنگری 17 مرداد 1403
  • تاریخ پذیرش 21 مرداد 1403
  • تاریخ اولین انتشار 21 مرداد 1403
  • تاریخ انتشار 01 دی 1403