在倾斜中厚矿床的矿房法开采实践中,常常会遇到这样情况:某阶段已采完并崩落上覆岩层之后,必须在上部阶段继续开采矿体。例如,在戈罗布拉戈达特矿务局瓦卢耶 Mining practice in the mining of sloped and moderately thick deposits often encounters such a situation that after a certain stage has been completed and the overburden has been broken down, the ore body must continue to be mined at the upper stage. For example, in the Gorobladat Mining Authority Valuye