room-and-pillar mining 中文意思是什麼
room-and-pillar mining
解釋
房柱法開采-
Pillar drawing in room - and - pillar mining at jinshan gold mine
金山金礦房柱法開採的礦柱回採 -
Ground behaviour occured in mining of maluping ore block by new room - pillar with bolting in kaiyang phosphate mine are analyzed and control measures of ground pressure are put forward
對開陽磷礦馬路坪礦段延伸開采工程中採用新型錨桿護頂房柱法出現的地壓顯現問題進行了詳細的分析,並提出了地壓控制措施。 -
Analysis on developing new room and pillar mining method in shendong coalfield
神東煤田發展新型房柱式採煤方法的分析 -
Mining practices on coal pillar and room mining under two goaf and highway bridge
基於上覆兩層采空區的公路橋煤柱條帶開采 -
Technical analysis on feasibility of new room and pillar mining method
新型房柱式採煤法可行性技術分析
分享友人