大家在查：计算机在采矿工业中的应用水力采煤法组织演变离岸金融一人有限责任公司地压观测岩体中应力吊斗铲连续采煤机长壁工作面

三下采煤

三下采煤

三下采煤

三下采煤

2

Coal mining under building, railway and water needs to both ensure safety in production, and recover underground resources reasonably .

“三下 ”采煤既要保证安全，又要科学合理地索取地下资源。

3

Strip -partial mining has an abroad application as an important method of coal mining under buildings.

条带开采是作为 “三下 ”采煤的主要技术措施，在我国有很广泛的应用。

5

Status and outlook of "three underneath " coal mining technology in Panjiang Mining Area

盘江矿区 “三下 ”采煤技术现状及展望

6

three unders in coal mining

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