平巷掘进掏槽的一种新方法——扩底空腔掏槽法
A NEW CUTTING METHOD IN TUNNELING-THE HOLE-SPRINGING & AIR-CAVITY CUT-BLASTING
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摘要: 根据矿山试验研究结果和理论研究结论，阐明了扩底空腔掏槽法的适用性．供类似矿山参照使用。Abstract: According to the results of the experiment in mines and to the conclusion of theoretic research, the adaptability of the hole-springing & air cavity cut-blasting is expounded. It can be used in similarmines.
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