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通过对铁山南煤矿112回采工作面K21煤层的特殊条件分析,提出了急倾斜硬顶中原煤层开采采空区的处理方法———步距式全部陷落法。经相似模拟试验和现场8个月的开采实践检验,证明采用该方法处理采空区切实可行,效果很好。
Based on the analysis of the special conditions of K21 coal seam in the No.112 mining face of Tieshannan Mine, the method of all-falling step-by-step settlement is proposed. After similar simulation tests and on-site 8-month mining practice test, it is proved that it is feasible and feasible to deal with goaf by this method.