کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
286526 509487 2016 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The influence of microwave irradiation on rocks for microwave-assisted underground excavation
ترجمه فارسی عنوان
اثرات تابش مایکروویو بر روی سنگها برای حفاری زیرزمینی با کمک مایکروویو
کلمات کلیدی
مایکروویو ها، تراکم ضخامت خلبان تونل با کمک مایکروویو، شکست سنگ
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی

Demand is growing for explosive-free rock breakage systems for civil and mining engineering, and space industry applications. This paper highlights the work being undertaken in the Geomechanics Laboratory of McGill University to make a real application of microwave-assisted mechanical rock breakage to full-face tunneling machines and drilling. Comprehensive laboratory tests investigated the effect of microwave radiation on temperature profiles and strength reduction in hard rocks (norite, granite, and basalt) for a range of exposure times and microwave power levels. The heating rate on the surface of the rock specimens linearly decreased with distance between the sample and the microwave antenna, regardless of microwave power level and exposure time. Tensile and uniaxial compressive strengths were reduced with increasing exposure time and power level. Scanning electron micrographs (SEMs) highlighted fracture development in treated basalt. It was concluded that the microwave power level has a strong positive influence on the amount of heat damage induced to the rock surface. Numerical simulations of electric field intensity and wave propagation conducted with COMSOL Multiphysics® software generated temperature profiles that were in close agreement with experimental results.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rock Mechanics and Geotechnical Engineering - Volume 8, Issue 1, February 2016, Pages 1–15
نویسندگان
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