pillar blast 中文意思是什麼
pillar blast
解釋
煤柱爆破-
Research on cms - aided blast design for ore pillar extraction
輔助礦柱回採爆破設計研究 -
Xinji no. 3 coal mine is a steep mine. it has reached pre - results by isolating the pillar with loosen blast technology in recovery area. the recovery rate is lifted and coal loss is reduced. it is an example for the same mine
新集三礦屬急傾斜礦井,在回收區段隔離煤柱中應用松動爆破技術,達到了預期效果,提高了采區回採率,減少了煤炭損失,並為同類型礦井提供了經驗。
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