DepartmentofResourceandMaterialEngineering;
HenanPolytechnicUniversity;
Jaozuo;
Henan454000;
China;
ChangcunColliery;
YimaCoalGroupCo.Ltd.;
Sanmenxia;
Henan472300;
China;
DepartmentofSocialScience;
ShandongInstituteofBusinessandTechnology;
Yantai;
Shangdong264005;
China;
煤层通道; 固有平衡; 梯形支撑; 金属支架; 岩层变形; 软地基;