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4 不同方法下安全系数与安全跨度关系 |
Fig.4 Relationship between safety factor and safety span obtained by different methods |