Safety area delimiting of coal mining under thick loosened aquifer with thin bedrock based on unascertained measure theory

ZENG Jialong，LIU Qiong，HUANG Rui，GUAN Yanhe，LIU Bo，TANG Zongchao，KUANG Chengbin，ZHANG Shaojun

Journal of Mining and Safety Engineering . 2015, (6): 898 -904 .