護頂礦柱 的英文怎麼說
中文拼音 [hùdǐngkuàngzhù]
護頂礦柱
英文
cramp-
Mining horizontal pillars with hydraulic roof propping in longwall caving method
在長壁式崩落法中用液壓支柱護頂回採水平礦柱Mine support ; roof bars single props ; lengths
礦井支護.頂梁單體支柱.長度Mine support ; head for single props ; connecting dimensions
礦井支護.單支柱用頂板.連接尺寸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。分享友人