| 1. | Study on hard roof working face first pressure managing way
坚硬顶板工作面初压管理的研究 |
| 2. | Ground pressure behavior of hard roof mining face
复合型坚硬顶板高档普采长壁工作面开采实践 |
| 3. | Controlling design of working face with thick and hard roof
高档普采工作面端面顶板的有效支护 |
| 4. | Safe mining technique for coal face with large mining height and hard roof
坚硬顶板工作面矿山压力显现特征 |
| 5. | Roof shortening technology of plow faec under the condition of two hard roofs
条件下刨煤机工作面顶板弱化技术 |
| 6. | Hard roof in control and practice high ranking conventional coal mining face
国外社区参与生态补偿的实践及经验 |
| 7. | The support designing analyses applying in big picking high and hard roof condition
坚硬顶板下综采准备工作面扩帮立架施工工艺 |
| 8. | Numerical simulation on the breakage and falling of thick and hard roof in shallow seam
浅埋煤层厚硬顶板破断与冒落的数值模拟 |
| 9. | Practices on fully mechanized coal mining in deep inclined seam with hard roof , soft coal and soft floor
软底大倾角煤层综采开采实践 |
| 10. | The compareness of special support and ordinary support under hard roof of conventional face
普采工作面坚硬顶板条件下有无特殊支护的比较研究 |
