蚀变带内矿体开采中人工假底的应用研究
宋恩祥,李强,张静,彭康

Research and Application of Artificial False Bottom in Mining of Orebody in Alteration Zone
Enxiang SONG,Qiang LI,Jing ZHANG,Kang PENG
表1 进路最大半宽要求
Table 1 Maximum half width requirement of the approach

安全

系数

进路最大半宽要求l /m
h=0.3h=0.4h=0.5h=0.6h=0.7h=0.8h=0.9h=1.0h=1.1
η=1.02.32.42.52.62.8>2.0>2.8>2.8>2.8
η≥2.01.81.91.92.02.02.12.12.22.2