Mechanism of the dynamic pressure caused by the instability of upper chamber coal pillars in Shendong coalfield, China
作者： Weibing Zhu , Jingmin Xu , Yingchun Li
DOI: 10.1007/S12303-017-0025-5
关键词:
摘要: … Although the chamber coal pillars have been stable for several years, their instability gives rise to the occurrence of catastrophic disasters if longwall faces have been arranged below …
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