Rock Mass Classification of Underground Water-Sealed Caverns
JI Hui-Bin, YAN E-Chuan, SONG Kun, WANG Zhang-Qiong-
JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI . 2012, (7): 62 -66 .  DOI: 10.3969/j.issn.1001-5485.2012.07.014