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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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descending chain
descending chain condition
descending chain condition for left ideals
descending colon
descending development method
descending difference
descending factorial
descending ideal series
descending induction
descending inhibition
descending node
descending normal series
descending order
descending order of powers
descending pathways
descending perineum syndrome
descending plane partition
descending powers
descending power series
descending sequence
descending series
descensional ventilation
descent
descent algorithm
descent datum
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