Studies on Drillability of Rocks by Rotary Drills
نویسندگان
چکیده
منابع مشابه
Performance analysis of drilling machines using rock modulus ratio
Rotary drills, diamond drills and percussive drills have been extensively used in open pits, quarries and construction sites. The prediction of the penetration rate of drilling machines is very important in the cost estimation and the planning of the rock excavation projects. The rock modulus ratio, which is the ratio of elastic modulus to compressive strength, indicating the deformability, is ...
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ژورنال
عنوان ژورنال: Journal of the Mining and Metallurgical Institute of Japan
سال: 1956
ISSN: 0369-4194,2185-6729
DOI: 10.2473/shigentosozai1953.72.817_395