| 1. | Study and practice on supporting technique in coal seam roof
煤层顶板支护技术的研究与实践 |
| 2. | Base test method for purlins supporting a standing seam roof system
固定接缝屋顶系统承重檩条的基本试验方法 |
| 3. | Application of fuzzy synthesis evaluation to coal seam roof stability
模糊综合评判在煤层顶板稳定性评价中的应用 |
| 4. | Test and research on bolt and wire mesh support for mine roadway with broken seam roof
破碎煤顶巷道锚网支护试验研究 |
| 5. | Contour map of seam roof
矿层顶板等高线图 |
| 6. | To optimization design taked gas out system and technique for close to seam roof
邻近煤层顶板瓦斯抽放系统工艺的优化设计 |
| 7. | Application of anchorage cable supporting technology in roadway with coal seam roof
锚杆锚索联合支护在大断面巷道中的应用 |
| 8. | Study on coal seam roof gas drainage from the strike of annular fracture areas by the long drill method
开采煤层顶板环形裂隙圈内走向长钻孔法抽放瓦斯研究 |
| 9. | The test results show that the drawing interval of 1 . 5 m is helpful for controlling dead - unconsolidated thin sandstone of coal seam roof and reduce sand ratio of drawn top - coal
试验结果表明，放煤步距采用三采一放有利于控制顶板极松散细砂岩，降低放出顶煤的含砂率。 |
