摘要
以炭窑峪煤业19#~22#煤层22801工作面为对象,通过对工作面监测以及推进数据的收集、整理和分析研究了22801工作面矿压显现规律和特征。结果表明,工作面周期来压步距平均为11.9 m,大周期来压步距为40.25 m,超前支承压力影响范围为60 m~65 m,巷道两帮移近量最大值为5.4 cm,巷道围岩稳定性较好,支护设计稳定有效。
Taking the 22801 working face of No.19~No.22 coal seam in Tanyaoyu Coal Industry as the object,through the monitoring of the working face and the collection,collation and analysis of the promotion data,this paper studies the law and characteristics of strata behavior in 22801 working face.The results show that the average periodic weighting step distance of working face is 11.9 m,the large periodic weighting step distance is 40.25 m.The influence range of advance abutment pressure is 60 m~65 m.The maximum displacement of two sides of roadway is 5.4 cm.The stability of roadway surrounding rock is good,and the support design is stable and effective.
作者
李晓晖
LI Xiaohui(Shanxi Coal Transportation and Sales Group Tanyaoyu Coal Industry Co.,Ltd.,Datong Shanxi 037001,China)
出处
《山西化工》
2021年第4期109-111,共3页
Shanxi Chemical Industry
关键词
特厚煤层
支架
工作阻力
矿压显现规律
extra thick coal seam
bracket
working resistance
strata behavior law
