Development unit division and favorable area evaluation for joint mining coalbed methane

YANG Zhaobiao,LI Yangyang,QIN Yong,SUN Hansen,ZHANG Ping,ZHANG Zhengguang,WU Congcong,LI Cunlei,CHEN Changxiao

Fig. 2. Relationships between mean ground stress and permeability (a), buried depth (b) and differential horizontal stress (c).