1Construction and numerical simulation research of functional supporting in deep roadwaysZHANG Shukun, WANG Laigui, YANG Haojie, LU Lu1-132Stress evolution characteristics and bearing mechanism of coal-hydraulic support in fully-mechanized caving mining face in extra-thick coal seamGUO Xingchen, GUO Jun, FENG Guorui, WEN Xiaoze, QI Tingye, BAI Jinwen, GAO Rui, QIAN Ruipeng, ZHU Linjun14-273Experimental study on evolution law of compressive mechanical properties of interbedded roof rockZHANG Hao, WU Yongping, XIE Panshi28-364Determination of the damage degree of coal rocks and study on the evolution law of permeability based on Zhaogu No. 2 Coal MineGONG Hao, LI Zheng, HU Haoyu37-505Analysis of the mechanical properties and damage characteristics of continuously graded high-strength cemented backfillXIA Yu, LU Aihong51-626Analysis of acoustic emission parameters and time-frequency characteristics in the process of rock sample fractureYANG Lirong, LI Jiajun, JIANG Chuan, HUANG Xianghai63-737Mechanical properties of sandstone with holes under impact loadWANG Yanbing, ZHANG Yaoyao, NIE Junwen, LIU Jiaye74-848Study on the precursor characteristics of rockbursts based on acoustic emission monitoring technologyLU Chuang, WANG Yuanjie, CHEN Fabing, LI Yan, XIA Yongxue, LIU Ning85-93