| 1. | The roof fell down .
房顶崩坍了。 |
| 2. | Foam cement applied to treat larger roof falling space
应用泡沫水泥治理特大顶板垮落空硐 |
| 3. | Speediness construction technique in mud - rock roof fall district
泥石流冒顶区快速施工技术 |
| 4. | Roof fall mechanism analysis and preventive methods of compound roof
复合型顶板冒顶机理分析及预防措施 |
| 5. | Analysis and prevention of roof falling accident in combined caving working face
综放工作面冒顶事故分析及防治 |
| 6. | Mechanism of combined roof falling by pushing and its comprehensive prevention
复合顶板推垮型冒顶的机理与综合治理 |
| 7. | An analysis of the cause for face roof fall accidents and preventive countermeasures
工作面冒顶事故的原因分析和防范对策 |
| 8. | Analysis of bolting with wire mesh technology from roof fall of letting gas drift
从排放瓦斯巷道冒顶事故分析锚网支护工艺 |
| 9. | Research on comprehensive control technique for heavy roof fall in weak mudstone drift
松软泥岩巷道大冒顶综合治理技术的研究 |
| 10. | Preventing of thrust roof fall in mining along dip direction in condition of composite roof
复合顶板仰斜开采推垮型冒顶事故防治 |
