@article{WANG Jun-zhi_109, author = {[WANG Jun-zhi, DU Peng-zhao, NIU Zhao-xuan]}, title = {An Auto-classification of Rockmass Discontinuities Based on K-meansCluster Analysis and Cluster Validity Index I: Researchand Application}, publisher = {Journal of Yangtze River Scientific Research Institute}, year = {2018}, journal = {Journal of Yangtze River Scientific Research Institute}, volume = {35}, number = {9}, eid = {109}, pages = {109-113}, keywords = {rock discontinuities;automatic classification;#i#K#/i#-means cluster analysis;cluster validity index #i#I#/i#;RDAP;grouting drillings;optimum position}, doi = http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20170290 }