In combination with the boundary conditions of open-pit and the development system of the underground mining transferred from open-pit, a high efficient induced caving method is proposed.
结合露天开采的边界条件与露天转地下开拓系统条件，提出诱导冒落法高效开采方案。
The ventilation system provides a new method to realize the safe and efficient mining of high gas longwall mining with sublevel caving.
这一通风系统可为其他高瓦斯综放面安全高效开采提供了一条新的技术途径。
The ventilation system provides a new method to realize the safe and efficient mining of high gas longwall mining with sublevel caving.
这一通风系统可为其他高瓦斯综放面安全高效开采提供了一条新的技术途径。
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