协同理念下岩金矿脉群连续回采顶板安全跨度研究

聂兴信,甘泉,高建,冯珊珊

Research on Safety Roof Span in Continuous Mining of Gold Vein Group Under Synergistic Concept

Xingxin NIE,Quan GAN,Jian GAO,Shanshan FENG

图7 顶板局部破碎岩体实拍图

Fig.7 Photo of partial broken rock mass on roof