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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。
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forepoling
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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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identification of electronic records
identification of explosion trace
identification of file consistency
identification of fishnet twine
identification of forensic biological evidence
identification of forensic science
identification of gene chip
identification of gene therapy product
identification of geoheritage
identification of germplasm
identification of heavy metal tolerance
identification of heavy minerals
identification of high specificity polymerase chain reaction
identification of human unsafe factors
identification of information need
identification of insect resistance in crop
identification of irradiated food
identification of living body
identification of loop-mediated isothermal amplification
identification of major installations
identification of nationalities in China
identification of organic compounds by derivative methods
identification of poison
identification of polished thin sections
identification of pseudogene
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