Combined grouting and reinforcement technology for deep and shallow holes in soft and broken coal roadway
Aiming at the problem that the coal bodies of the two sides of the roadway were loosened and destroyed to cause the coal body to be compressed and the deformation of the roof and the two sides during the advancing process of roadway 43222 in the fourth panel area of Changping Coal Mine. Through the...
| الحاوية / القاعدة: | Meikuang Anquan |
|---|---|
| المؤلفون الرئيسيون: | , , |
| التنسيق: | مقال |
| اللغة: | الصينية |
| منشور في: |
Editorial Office of Safety in Coal Mines
2021-09-01
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://www.mkaqzz.com/cn/article/id/7620 |