不同类型应力场下巷道变形特性分析

Analysis of Roadway Deformation Characteristics under Different Types of Stress Field

巷道变形特征主要取决于巷道所处应力场类型,为了确定在不同应力场中巷道变形特征,为不同应力场内巷道支护提供指导,以南煤集团大阳泉煤矿埋深约600m巷道为研究对象,建立了以构造应力为主、垂直应力次之,垂直应力为主、构造应力次之的两类六个数值模型。分析结果表明,在以构造应力为主的模型中,巷道变形量主要体现在巷道顶板;在以垂直应力为主的模型中,巷道变形量主要体现在巷道两帮,为处于不同类型应力场内的巷道支护提供指导。

The deformation features of roadway mainly depends on the stress field in different types, in order to determine, roadway deformation characteristics in the different stress field, and provide guidance for roadway support, the South Coal Group Yangquan coal mine about 600m deep tunnel as the research object, take the tectonic stress as the principal thing, the vertical stress second place; vertical stress as the principal thing, tectonic stress second place of two kinds of six numerical models, analysis results show that in tectonic stress model, roadway deformation is mainly reflected in the roof; in the model with vertical stress in main roadway deformation embodied in two sides of roadway, in different types should provide guidance roadway support force field.