骗子
发表于 2025-4-1 03:44:43
http://reply.papertrans.cn/84/8315/831429/831429_61.png
Blood-Vessels
发表于 2025-4-1 10:05:44
Naturally supported mining methods,his implies maintenance of the local stability of rock around individual excavations and more general control of displacements in the mine near-field domain. As a first approximation, stope local stability and near-field ground control might be considered as separate design issues, as indicated sche