多年来,分段崩落法是胡家峪中倾中厚矿体定型的采矿方法。但在设计过程中,为解决损失贫化问题,采矿方法在潜移默化地演进着。从六十年代初至今,设计的堑沟接矿角度由70°逐步演变成55°,这一过程反映了由崩落法过渡到空场法本质的联系,符合量变到质变飞跃的规律。虽称分段崩落法,但矿石并不是 For many years, the subsided caving method is a well-established mining method for moderate-thick ore bodies in Hujiayu. However, in the design process, mining methods have been subtly evolving to address the issue of loss of depletion. From the beginning of the 1960s to the present, the designed angle of the gulch and gouge transition gradually changed from 70 ° to 55 °. This process reflects the connection of the transition from caving method to empty method and the law of quantity to qualitative leap. Although the sub-caving method, but the ore is not