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我们开采的岩石为大冶灰岩,分上、中、下三层.上层呈块状或‘厚层状’,层理不明显,质硬,f=8～11,中层呈中厚或‘薄层状’,层理发育,性极脆,f=6～8.上中两层均为灰岩(亦称青石).下层为泥质灰岩(亦称灰石),呈薄层状,层理极发育,有的可剥开成片,风化面很松软,层较厚者有韧性,f=4～6.以前我们使用的爆破方法,系以小爆破为主,随着窑磨产量的提高,石灰石需要量越来越大,因此,我们改为以中爆破
The rock we mine is the Daye limestone, which is divided into upper, middle, and lower layers. The upper layer is massive or ’thick layered’. The layering is not obvious, the quality is hard, f=8~11, and the middle layer is medium thick or ’ Thin layered, stratified development, very brittle, f = 6 ~ 8. The upper two layers are limestone (also known as bluestone). The lower layer is argillaceous limestone (also known as gray stone), was thin layered The layering is extremely developed, some can be stripped into pieces, the weathered surface is very soft, and the thicker layer has toughness, f=4~6. The blasting method we used before was based on small blasting, with the kiln grinding With the increase in production, the demand for limestone is getting bigger and bigger. Therefore, we replaced it with blasting