Global Geology     2015 18 (4):  232-    ISSN: 1673-9736:  CN: 22-1371/P Fracture property identification method based on shrinkage factor particle swarm optimization ZHOU Chao, FENG Xuan, ZHANG Bing, LU Xiaoman, JIN Zelong and XU Cong 1． College of Geo- Exploration Science and Technology， Jilin University， Changchun 130026， China; 2． Baixian Company，Northeast Electric Power Design Institute Co．，Ltd． of China Power Engineering Consulting Group， Changchun 130021，China Received null  Revised null  Online 2015-12-25 Reference   Corresponding author: