The practice pointed out that destressing methods by driving openings have obvious advantages in both technique and economy,which provide a new way to m...

 
  • 實(shí)踐表明:掘巷卸壓法無(wú)論在技術(shù)上還是經(jīng)濟上都具有明顯的優(yōu)越性,它為軟巖大斷面峒室的維護提供了一條新的途徑。
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