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| 11. | concrete spraying support |
| 喷射混凝土支护 |
|
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| | |
| 12. | unsupported area |
| 未支护区 |
|
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| | |
| 13. | combination of anchorage and shotcrete support |
| 喷锚支护 |
|
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| | |
| 14. | horizontal exploratory tunnel supporting |
| 勘探水平坑道支护 |
|
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| | |
| 15. | steel tunnel support |
| 隧道钢支护 |
|
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| | |
| 16. | driving face support |
| 掘进工作面支护 |
|
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| | |
| 17. | chamber support |
| 峒室支护 |
|
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| | |
| 18. | ripping face support |
| 挑顶面支护 |
|
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| | |
| 19. | coalface support |
| 回采工作面支护 |
|
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| | |
| 20. | self-supproted opening |
| 天然支护采矿法 |
|
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