TY - Journal of Changjiang River Scientific Research Institute A1 - WANG Zhi-guo,LI Zhu-ying , LI Yue-long T1 - Cyclic Loading and Unloading Test on Fracture Mechanism of Combined Model of Surrounding Rock and Backfill Based on Field Strain Y1 - 2019-01-01 JF - Journal of Changjiang River Scientific Research Institute JO - Journal of Changjiang River Scientific Research Institute SP - 88 EP - 94 VL - 36 IS - 1 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20170764 ER -