| Autor: |
Kostyuk Svetlana, Bedarev Nikolay, Lyubimov Oleg, Kovalyov Nikolay |
| Jazyk: |
English<br />French |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
E3S Web of Conferences, Vol 41, p 01002 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
2267-1242 |
| DOI: |
10.1051/e3sconf/20184101002 |
| Popis: |
At the present time the problem to search for variants for the development of steep thick coal seams is highly interest. Here there are, for example, variants for managing the workings’ roof by caving or laying the worked out space. The authors proposed a number of methods for it, which are protected by patents. The permissible span of the roof exposure is estimated as a function of the type of the immediate roof of the mine, its thickness, bulk density and tensile strength, and the height of the underlevel is also determined. The technical result is provided by the presence of the protective inter-horizon strips and inter-sectional pillars, by the order of working out the excavation site and by the value of the step of the binding of the worked out space. The above solutions are acceptable for the Prokopyevsk-Kiselevsk coal region in Kuzbass. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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