Then research status in China and foreign of expressway mining damage and feasibility methods of goafmanagement under of approach to expressway were introduced.
介绍了国内外高速公路采动损害的研究现状,以及高速公路下伏和临近采空区治理的可行性方法。
2
Aimed at top corner gas management at the low gas blasting face, by upper goaf drainage with decompression in self coal seam, the experience is tried, the effect is obvious.