梯段開采 的英文怎麼說
中文拼音 [tīduànkāicǎi]
梯段開采
英文
stepped face working-
( 3 ) according to the actual geology situation in the material field, use the " alternation " principle of the value engineering analysis methods, and then find a better construction method to satisfy the requirement of rock - fill material, through using chamber blasting to substitute muffling and using an - fo to substitute ammonium nitrate explosive, and then huge economical benefits were gained, for example, the unit cost of its rock - fill material reduced from 11. 77 m3 to 7. 17 / m3, and directly reduced the total cost by 4. 26 million of cost
( : 3 )依據料場的實際地質情況,通過價值工程活動,利用價值分析的「代替」原理,在滿足堆石料功能不變的條件下,採用洞室爆破代替深孔梯段爆破,採用按油炸藥代替錢梯炸藥,使得堆石料的開采成本顯著降低,從投標價的h . 70元/ m3降低到7 . 17元/ m3 ,降低了4 . 53元/ mj ,以上壩堆石料94 . 2萬m 「計,直接降低成本426 . 75萬元,產生了巨大的經濟效益。Flat back method
上向梯段開采法
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