Anisotropy of crack initiation strength and damage strength of coal reservoirs

HAO Xianjie,WEI Yingnan,YANG Ke,SU Jian,SUN Yingfeng,ZHU Guangpei,WANG Shaohua,CHEN Haibo,SUN Zhuowen

Fig. 1. SEM scanning results of bedding and cleat characteristics of coal reservoir samples.