热兹卡兹甘矿床有些矿段矿石品位高（品位沿矿体厚度无变化），厚度大（超过18m），分一步和二步矿房以充填法回采，以保证矿量完全采出。一个盘区的回采顺序如下：一步矿房采准与回采；采空矿房充填与接顶充填；二步矿房采准与回采；采空的二步矿房充填。一步矿房以大家熟悉的 Some ore sections of the Hotzkazgan deposit are of high grade (no change in grade along the thickness of the ore body) and have a large thickness (more than 18 m). The first and second-step mines are reclaimed by filling method to ensure complete mining. The mining sequence of a panel is as follows: One-step mining and mining quarrying and mining; Mined-out mining house filling and top-filling; Two-stage mining house quarrying and mining; Step mining is familiar to everyone