underhand stoping 中文意思是什麼
underhand stoping
解釋
下向梯段回採-
Practice of pre - setting laneway in underhand drift cut - and - fill stoping
下向進路式膠結充填采礦法中巷道預留技術實踐 -
The application of the cemented filling technic in this mine has proven that it has such advantages as high concentration of slurry, low cost of filling and filling without dewatering, etc., so that it is special fit to underhand drift cut - and - fill stoping
礦山應用證明，該技術具有充填濃度高、充填成本低、充填體不需脫水等顯著優點，特別適合於下向進路膠結充填采礦法中應用。
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