Isbn: 9787502487256 - 多矿脉集群开采方法与结构稳定性/汪朝,聂兴信,郭进平,罗小新任选 备注 (1 risultati)

paperback. Condizione: New. Paperback. Pub Date: 2021-03-01 Pages: 141 Language: Chinese Publisher: Metallurgical Industry Press. This book aims at the existence conditions of multiple parallel steep ore vein groups. proposes the concept of cluster mining. and discusses several key points in cluster mining The problem was studied.?The research results in this book provide new ideas and methods for the safe and efficient mining of steeply inclined thin veins. and provide reference and experience for future mining of the .…