梯段開采 的英文怎麼說

中文拼音 [duànkāicǎi]
梯段開采 英文
stepped face working
  • : Ⅰ名詞1 (梯子; 樓梯) ladder; stairs; steps; staircase 2 (姓氏) a surname Ⅱ形容詞(形狀像樓梯的...
  • : Ⅰ量詞(部分) section; segment; part; paragraph; passage Ⅱ名詞(姓氏) a surname
  • : 采名詞(采地) feudal estate
  1. ( 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爆破,採用按油炸藥代替錢炸藥,使得堆石料的成本顯著降低,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。
  2. Flat back method

    上向梯段開采
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