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超前支护
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超前支护
Encyclopedia
工学
巷道支护
释
advanced support
超前支护
在极破碎岩层或不稳定第四系地层中掘进井巷时,为保证掘进作业正常进行并预防工作面发生坍塌,在开挖之前或超前于掘进工作面采取的预先加固措施。
工学
超前支护
释
forepoling
超前支护
采用敷设钢筋、钢管或注浆等方法向隧道及地下工程施工开挖面前方施作的一种稳定开挖面及周边岩体的辅助支护措施。又称预支护或超前预支护。
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coordinate gradient descent
coordinategraph
coordinate grid
coordinate homeomorphism
coordinate hyperplane
coordinate hypersurface
co-ordinate indexing
coordinate line
coordinate matching of machining and measurement system
coordinate measurement
coordinate measurement quantity
coordinate measuring instrument
coordinate measuring machining
coordinate measuring -metrology
coordinate measuring technology
coordinate method
coordinate neighborhood
coordinate network
coordinate of a point
coordinate of a point on earth surface
coordinate of a vector
coordinate of reference station
coordinate of the pole
coordinate operator
coordinate origin
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