pillar extraction

基本解釋

So pillar extraction is a problem to be solved presently.
因此煤柱的回收是目前急需解決的問(wèn)題。
In order to solve the technical problems of mining strip extraction coal-pillar and waste disposal, the waste substitution extraction is proposed.
針對(duì)建下條采煤柱回收和井下矸石處理的重大技術(shù)難題，提出矸石置換開(kāi)采。
A long-term practice has proved that the pillar extraction method is suitable not only for the recovery of orebody no. 8 in this mine but also achieves better economic effects.
經(jīng)過(guò)多年的生產(chǎn)實(shí)踐證明，此種礦柱回采方案對(duì)東桐峪金礦8號(hào)脈礦柱的回采是適宜的，并且收到了較好的經(jīng)濟(jì)效益。

Three pillar extraction panels 三大支柱提取板;三個(gè)支柱提取面板;三個(gè)柱子提取盤(pán)區(qū);三個(gè)支柱開(kāi)采板
partial pillar extraction 部分支柱提取;部份柱子提取
shaft pillar extraction 井筒煤柱開(kāi)采
bottom pillar extraction 底柱回采
Ore pillar extraction 礦柱回采