【摘要】 由于爆破内伤不影响成荒率，所以不易被开采人员重视。本文阐明了爆破内伤对板材率的影响以及爆破内伤形成的机理，并简述了控制爆破内伤的措施。更多还原

【Abstract】 The blasting internal crack usually doeSn’t be paid much attention by miner because it doesn’t influence the raw material ratio. The influence of internal crack on rock plank ratio and the mechaism Of forming blasting internal crack are discussed and the measures of controlling blasting internal crack are proposed.更多还原