The influence of borehole arrangement of soundless cracking demolition agents (SCDAs) on weakening the hard rock
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DOI: 10.1016/j.ijmst.2021.01.005
Abstract: Abstract The hard roof difficult to collapse easily causes gas accumulation, which threatens the production safety of coal mine. Therefore, roof pre-cracking is required. Although blasting and hydraulic fracturing can also crack the roof, blasting… read more here.
Keywords: agents scdas; borehole; soundless cracking; cracking demolition ... See more keywords