زمین شناسی مهندسی، جلد ۱۲، شماره ۲، صفحات ۲۹۳-۳۱۴
عنوان فارسی اولویت‌بندی و انتخاب بهترین روش بررسی زیرسطحی تونل انتقال آب سبزکوه در ‌کوه‌های زاگرس
چکیده فارسی مقاله اولویت‌بندی روش بررسی زیرسطحی نقش مهمی در مدیریت اقتصادی و ایمنی پروژه‌های زیرزمینی دارد. در این پژوهش شیوه جدیدی برمبنای فرآیند تحلیل سلسله مراتبی (AHP) و شباهت به گزینۀ ایده­آل (TOPSIS) برای اولویت­بندی روش‌های بررسی مسیر تونل سبزکوه از میان طیف گسترده‌ای از روش‌های ژئوتکنیکی و ژئوفیزیکی پیشنهاد شده است. برای این کار ابتدا مهم‌ترین عامل مؤثر بر انتخاب بهترین روش بررسی زیرسطحی این پروژه بررسی شده و سپس با به‌کارگیری روش تحلیل سلسله مراتبی (AHP) عوامل بررسی شده به‌صورت زوجی مقایسه و وزن هر یک از عوامل محاسبه شده است. علاوه بر این، از روش شباهت به گزینۀ ایده‌آل برای انتحاب نزدیک‌ترین روش به حالت ایده­آل بررسی زیرسطحی مسیر تونل سبزکوه بهره گرفته شده است. در نهایت از بین 6 گزینۀ بررسی زیرسطحی پیشنهاد شده برای تونل، در هر دو روش AHP و TOPSIS پژوهش‌های لرزه­ای به‌عنوان بهترین گزینه، و بقیه گزینه­ها با توجه به وزن مورد نظر در اولویت­های بعدی قرار گرفتند.
کلیدواژه‌های فارسی مقاله زاگرس، تونل‌سازی، تصمیم‌گیری چندمعیاره، روش سلسله‌مراتبی، روش شباهت به گزینه ایده‌ال  
عنوان انگلیسی Prioritizing and Selecting the Best Subsurface Exploration Method in Sabzkooh Water Conveyance Tunnel (Zagros Mountains)
چکیده انگلیسی مقاله Introduction
The selection of the best subsurface exploration methods corresponding to geotechnical, topographical and economic circumstances of the project is one of the most effective factors in the success of a tunneling project. On the other hand, the development of a decision model and consequently choosing the most suitable alternatives are complex tasks. Therefore, prioritizing and selecting the best subsurface exploration methods, as the main aim of this study, can reduce the economic and social costs associated with the execution of a tunneling project. For this purpose, ten experts from tunneling community have been asked to weigh the chosen criteria of the problem in this research. A methodology utilized in this study is the Analytical Hierarchy Process (AHP) which proved useful in engineering decision-making problems. The other method is TOPSIS, one that has continuously been used in decision making in the recent decades. These two techniques have been combined and utilized in this work to rank the aforementioned exploration methods.
 
 
Material and methods
The study area is located about 109 km far from Shahrekord city amid the Zagros mountains. The Sabzkooh tunnel development plan has been under evaluation in the time that this research was being done. The geology of the area majorly encompasses sedimentary rocks which have been outcropped as folds, faults, and fractured and altered zones. However, the variety of the lithological units in the tunnel route is high, and units of limestone and shales also exist over the path.
In the first step, geological and topographic maps were produced for the study area, and general information from the tunnel path was collected and examined. Suitable exploration methods were evaluated, and six main methods were chosen to be considered as the alternatives of the study including (a) discontinuities study, (b) Lugeon tests, (c) RQD, (d) Geo-electric, (e) Gravimetry, and (f) Seismic methods. Moreover, nine criteria ranging from “volume of the available information” and “environmental impact” to “cost” and “accuracy” of the employed methods were taken into account. A pairwise comparison matrix was then developed, and the experts were asked to fill it out. The importance of each criterion was then simply calculated through this matrix. Alternatives pairwise comparison matrices were also filled out and, in this manner, the alternatives could be ranked using the AHP technique. Next, the TOPSIS technique was employed for the same purpose using a rather different process.
Results and discussion
Both AHP and TOPSIS techniques show very close results for ranking of the alternatives in this study. They rank the three Seismic, Geo-electric and Discontinuities studies methods as the best ones for the considered tunneling project. The only difference between these two techniques is how they determine the worst method. The AHP ranks the Lugeon as the last rank among the six methods whereas the TOPSIS determines the RQD as the least reliable method of exploration for the Sabzkooh tunnel project.
 
 
Conclusion
The prioritization and the subsequent selection of the most reliable exploration methods for an underground excavation project is a crucial task amid technical decisions. In this research, two major multi-criteria decision-making methods including AHP and TOPSIS were considered and applied for the Sabzkooh tunnel in Iran. The results indicate a high agreement between the two methodologies even though these two approaches decide differently on the least reliable methods to be applied.
کلیدواژه‌های انگلیسی مقاله Decision making, Exploration methods, Tunnel excavation, Reliability.
نویسندگان مقاله مسعود زارع نقدهی | Masoud Zare Naghadehi
دانشگاه صنعتی همدان

سید داود محمدی | Seyed Davood mohammadi
دانشگاه بوعلی سینا همدان

مصطفی کریمی | Mostafa Karimi
دانشگاه بوعلی سینا همدان

نشانی اینترنتی http://jeg.khu.ac.ir/browse.php?a_code=A-10-222-1&slc_lang=fa&sid=1
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موضوعات مقاله منتشر شده ژئوتکنیک (مکانیک خاک و سنگ)
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