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留矿采矿法
释义
留矿采矿法
Encyclopedia
工学
房柱采矿法
释
shrinkage stoping mining method
留矿采矿法
将矿块划分为矿房、矿柱,先采矿房,后采矿柱,自下而上分层回采,每次采下矿石靠自重放出三分之一左右,剩余矿石留在矿房内作为继续上采的工作平台;矿房全部采完后,再将留在矿房中的矿石再进行大量放矿的一种采矿方法。由于随回采工作的推进,矿房以敞空形式存在,靠围岩的稳固性和矿柱来维护顶板稳定,因此属于空场采矿法的一种。
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example-based machine translation, EBMT
Example of Oracle Bone Inscriptions
examples
Examples of Doubtful Points in Ancient Books
examples of the words and expressions
ExAO
exaptation
exarch
Exarchate of Cartage
exbibyte 260
excavated instruments from the tomb of Marquis Yi of Zeng
excavated soil
excavating machinery
excavation and disposal treatment
excavation blasting of underground cavern
Excavation of the Tomb of Shedihuiluo of the Northern Qi Dynasty
excavation of underground powerhouse
excavation with track equipment
excavation with trackless equipment
excavation work
excavator
exceedance
exceeding
excellence in four regards
Excellence in Public Relations and Communication Management
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