Extraction of the remnant coal pillar in regular and irregular shapes : a case study
With the increasing coal mining rate, many coal mines in China are facing the coal resource exhaustion problem. This paper presents a case study on extracting a coal pillar which was left in a longwall retreat mine, Wangzhuang mine, in China. The left coal pillars usually have boundaries of regular...
| Principais autores: | , , |
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| Outros Autores: | |
| Formato: | Journal Article |
| Idioma: | English |
| Publicado em: |
2020
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| Assuntos: | |
| Acesso em linha: | https://hdl.handle.net/10356/139573 |