Developing a New Bursting Liability Index Based on Energy Evolution for Coal under Different Loading Rates
نویسندگان
چکیده
The risk of a coal burst rises with the excavation depth and other mining-related activities. These devastating activities are major concern during deep mining. During such activities, loading rate is cause damage. Different indexes, including elastic strain modulus index (Wet), bursting energy (Ke), dynamic failure time (DT), compressive strength (Rc), used for intensity; however, damage factors not included in these indexes. In this study, new liability called (EMDI) was developed using rock variables index, based on evolution characteristics under different rates. results were compared existing their range proposed to evaluate liability. EDMI shows positive polynomial second order degree relationship Wet Ke, having determination factor 0.99, while DT negative 0.94. Rc show power 0.99. relationships indexes revealed that can be effectively evaluating liabilities stress environments.
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ژورنال
عنوان ژورنال: Sustainability
سال: 2022
ISSN: ['2071-1050']
DOI: https://doi.org/10.3390/su14031572