Solutions for Tunneling Problems

سال انتشار: 1392
محل انتشار: اولین همایش سراسری محیط زیست، انرژی و پدافند زیستی
کد COI اختصاصی: ECONF01_672
زبان مقاله: انگلیسی
تعداد مشاهده: 1029

نویسندگان

M.Sc. of Engineering Geology, Agricultural & Natural Resources Research Center of Baluchistan, Iran

چکیده

Tunneling through weak and jointed rock masses such as in the metro project of Isfahan (Shemshak formation) is a challenging task for the planners, esigners, engineers and the geologists because of high overburden, thickly vegetated surface, poor rocks and highly varying geology with the presence of numerous small and big shear zones, thrusts, faults, etc. Due to these reasons, tunneling problems such as squeezing ground condition, chimney formation, face ollapse, water in rush, etc. have been faced in the past and are still being encountered. Failures and the problems may be regarded as challenges and opportunities for generating new knowledge base and thereby increasing self-reliance in tunneling. Accordingly, recent experience of (i) tunneling through the poor rocks experiencing the squeezing conditions, (ii) SRF rating in case of competent moderately jointed rock experiencing spalling and rock burst condition, (iii) tunnels under dynamic condition, (iv) the effect of rock type on bolt length and (v) the improvement in rock mass quality Q because of the grouting of full- column rock bolt grout are presented in the paper. The challenges of cost-effective grouting in water charged rocks and swelling ground and TBM tunneling inmetro project of Isfahan (Shemshak formation) are also briefly highlighted.

کلیدواژه ها

Tunneling; Squeezing; Rock Burst; Dynamic Condition; Rock Bolt; Grouting; Water-in-rush

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.