Exploration and treatment technology for shallow buried coal seam roadway passing through ditch
In order to solve the problems encountered in the passage of thin-bedrock shallow coal seam roadways, three roadways in the 4-2 coal seam of Zhangjiamao Coal Mine were taken as an example, through drilling engineering, water pressure test, core identification, drilling video, hydrochemical test and...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Safety in Coal Mines
2021-12-01
|
| Series: | Meikuang Anquan |
| Subjects: | |
| Online Access: | https://www.mkaqzz.com/cn/article/id/7749 |