综放工作面大断面沿顶巷道支护设计优化研究

Research on Support Design Optimization of Large Section Roadway along Roof in Fully Mechanized Top Coal Caving Face

针对古城煤矿巷道断面面积不断增加和矿井地质情况复杂变化的问题,提出合理的巷道支护方案设计。以S1301运输巷道为工程背景,运用理论分析的方法建立巷道锚固承载体的力学模型。然后,提出合理的巷道支护参数,并通过相似模拟实验验证其合理性。最终,在现场监测中得出巷道支护方案设计较为合理,巷道变形量在允许范围内,保证矿井正常生产。

In view of the increasing cross-section area of the roadway and the complex changes of the mine geological conditions in Gucheng Coal Mine,this paper puts forward a reasonable roadway support scheme design.Taking the S1301 transportation roadway as the engineering background,the mechanical model of roadway anchorage support is established by using the method of theoretical analysis.Then,the reasonable roadway support parameters are put forward,and the rationality is verified by similar simulation experiments.Finally,in the field monitoring,it is concluded that the design of roadway support scheme is more reasonable,and the roadway deformation is within the allowable range,so as to ensure the normal production of the mine.