Dams, mine tunnel, shaft, tunnel, River Cross Harbor Tunnel, subway excavation of underground works such as the use of anti-seepage curtain grouting;
水坝、矿山巷道、竖井、隧洞、江河海底隧道、地铁等地下工程开挖时采用注浆防渗帷幕；
It means to the underground mine that the stability to the excavation and support of the roadway is the precondition for the safe production in mine.
对地下矿山开采而言，保证巷道开挖与支护稳定是矿山安全生产的前提。
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